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The removal of heavy metal cations and co-existing anions represents one of the promising pathways to produce purified water for industry. Laminar MXene membrane has attracted tremendous research interest in the separation field in the past decade. The thermal self cross-linking MXene membrane has been proven to exhibit good anti-swelling performance. However, the decrease of negative charge during self-crosslinking leads to decreasing ion separation performance due to fading adsorption and/or weakened surface-charged controlling effect. To regenerate the surface charge, the hydroxylation of MXene membrane is adopted by substituting –F with –OH using the alkali of KOH. The resultant hydroxylated MXene membrane demonstrates overall better performance than the pristine MXene membrane in wettability and Zeta potential, promoting the rejection and separation of ions. When two selective membranes are applied to remove the heavy metal cations (Pb2+, Cu2+, and Cd2+) and co-existing anions (Cl− and/or NO3−) under the electronic field with appropriate voltage, the rejection of 99.5% can be obtained at 12 V for a 383 nm-thick hydroxylated MXene membrane, higher than that of pristine MXene membrane. As a result, the co-existing anions were also excluded at ~97% via increasing surface-charged controlling effect. Moreover, the hydroxylated MXene membrane also shows selective separation permeance on Na+/Pb2+, Na+/Cu2+, and Na+/Cd2+ pairs. By controlling the interlayer spacing through thermal self-linking route, good operational durability and reproducibility are also achieved for the hydroxylated MXene membrane during the 70-min test. These highlight the potential of developing and applying 2D laminar membrane for separation and treatment of wastewater.
Saidi Wang; Fukai Wang; Yun Jin; Xiuxia Meng; Bo Meng; Naitao Yang; Jaka Sunarso; Shaomin Liu. Removal of heavy metal cations and co-existing anions in simulated wastewater by two separated hydroxylated MXene membranes under an external voltage. Journal of Membrane Science 2021, 638, 119697 .
AMA StyleSaidi Wang, Fukai Wang, Yun Jin, Xiuxia Meng, Bo Meng, Naitao Yang, Jaka Sunarso, Shaomin Liu. Removal of heavy metal cations and co-existing anions in simulated wastewater by two separated hydroxylated MXene membranes under an external voltage. Journal of Membrane Science. 2021; 638 ():119697.
Chicago/Turabian StyleSaidi Wang; Fukai Wang; Yun Jin; Xiuxia Meng; Bo Meng; Naitao Yang; Jaka Sunarso; Shaomin Liu. 2021. "Removal of heavy metal cations and co-existing anions in simulated wastewater by two separated hydroxylated MXene membranes under an external voltage." Journal of Membrane Science 638, no. : 119697.
Two-dimensional (2D) MXene membranes with high thermal and mechanical stability have shown great promise for water purification and desalination given their low energy consumption and high efficiency. In this work, we used a one-dimensional (1D) steady-state ion sieving and rejection model to describe the transport of hydrated cations through 2D lamellar MXene (Ti3C2Tx) membranes under transmembrane pressure field and external electric field. The model was validated using experimental data on the permeation fluxes of the 365 nm-thick MXene membrane with an interlayer spacing of 7.8 Å under transmembrane pressure of 0.2 atm at 298 K and under an external electric field between 0.1 and 8.25 V. The regressed model diffusion coefficients of penetrant (Di,pc) through the MXene membrane under transmembrane pressure field were 1.98 × 10−7 m2 h−1 for K+ and 1.77 × 10−7 m2 h−1 for Na+. Under the external electric field at 298 K and fixed starting solution concentration of 50 mg L−1 for K+ or Na+ cation, the diffusion coefficient of penetrant (Di,ec) from the regression were 2.55 × 10−9 m2 h−1 for K+ and 1.21 × 10−9 m2 h−1 for Na+. By applying the regressed parameters from both operation modes into the one-dimensional ion sieving and rejection models, the effects of interlayer spacing, potential voltage, temperature, and thickness on the permeation and rejection of hydrated K+ and Na+ cations through the MXene membrane can be effectively simulated. The use and modification of a theoretical model for ionic transport through 2D MXene (Ti2C3Tx) membranes we reported here can provide essential insights to guide future membrane design and determine its applicability of water desalination.
Yun Jin; Yiyi Fan; Xiuxia Meng; Jinyong Li; Claudia Li; Jaka Sunarso; Naitao Yang; Bo Meng; Weimin Zhang. Modeling of hydrated cations transport through 2D MXene (Ti3C2Tx) membranes for water purification. Journal of Membrane Science 2021, 631, 119346 .
AMA StyleYun Jin, Yiyi Fan, Xiuxia Meng, Jinyong Li, Claudia Li, Jaka Sunarso, Naitao Yang, Bo Meng, Weimin Zhang. Modeling of hydrated cations transport through 2D MXene (Ti3C2Tx) membranes for water purification. Journal of Membrane Science. 2021; 631 ():119346.
Chicago/Turabian StyleYun Jin; Yiyi Fan; Xiuxia Meng; Jinyong Li; Claudia Li; Jaka Sunarso; Naitao Yang; Bo Meng; Weimin Zhang. 2021. "Modeling of hydrated cations transport through 2D MXene (Ti3C2Tx) membranes for water purification." Journal of Membrane Science 631, no. : 119346.
Proton and electron transport in mixed conducting PBI-TGIC/SG.
Yun Jin; Bo Gao; Chao Bian; Xiuxia Meng; Bo Meng; Shao Ing Wong; Naitao Yang; Jaka Sunarso; Xiaoyao Tan; Shaomin Liu. Elevated-temperature H2 separation using a dense electron and proton mixed conducting polybenzimidazole-based membrane with 2D sulfonated graphene. Green Chemistry 2021, 23, 3374 -3385.
AMA StyleYun Jin, Bo Gao, Chao Bian, Xiuxia Meng, Bo Meng, Shao Ing Wong, Naitao Yang, Jaka Sunarso, Xiaoyao Tan, Shaomin Liu. Elevated-temperature H2 separation using a dense electron and proton mixed conducting polybenzimidazole-based membrane with 2D sulfonated graphene. Green Chemistry. 2021; 23 (9):3374-3385.
Chicago/Turabian StyleYun Jin; Bo Gao; Chao Bian; Xiuxia Meng; Bo Meng; Shao Ing Wong; Naitao Yang; Jaka Sunarso; Xiaoyao Tan; Shaomin Liu. 2021. "Elevated-temperature H2 separation using a dense electron and proton mixed conducting polybenzimidazole-based membrane with 2D sulfonated graphene." Green Chemistry 23, no. 9: 3374-3385.
To obtain liquid fuel and high purity N2, extensive energy is consumed in converting methane to syngas (H2 + CO) and in separating N2 from air. Conventional studies were mainly focused on the partial oxidation of methane (POM) to syngas instead of the N2 purification. Here, we report a win-win scheme of POM to syngas and N2 purification using a high performance ceramic hollow membrane reactor. The mixed ionic and electronic conducting doped La0.8Ca0.2Fe0.95Ag0.05O3−δ (LCF-Ag) powder enduring harsh environment at high temperatures was synthesized and prepared into hollow fibre membranes. By using a self-designed injection device, the high-efficiency catalyst (Ni/LaNiO3/γ-Al2O3) was uniformly anchored on the inner surface of the hollow fiber along the whole length to guarantee the ideal reaction rate to achieve the desirable reaction efficiency, product selectivity and nitrogen purity. At 900℃, 99% methane conversion, 93% CO selectivity and syngas with suitable ratio of H2/CO were obtained by using both membrane modules containing one single or three hollow fiber membranes. Meanwhile, N2 with purity over 99.9% can be separated from gas mixture (synthetic air) due to the removal of oxygen which was consumed by POM. These results suggest that POM to syngas and N2 purification can be achieved using a high-performance ceramic hollow fiber membrane reactor toward green and energy-saving technology. This is a promising win-win scheme of catalytic reaction combining with gas separation.
Shude Zhang; Saidi Wang; Yun Jin; Jian Song; Xiuxia Meng; Bo Meng; Naitao Yang; Xiaoyao Tan; Zhonghua Zhu; Shaomin Liu. One stone two birds: Simultaneous realization of partial oxidation of methane to syngas and N2 purification via robust ceramic oxygen-permeable membrane reactors. Chemical Engineering Journal 2021, 419, 129462 .
AMA StyleShude Zhang, Saidi Wang, Yun Jin, Jian Song, Xiuxia Meng, Bo Meng, Naitao Yang, Xiaoyao Tan, Zhonghua Zhu, Shaomin Liu. One stone two birds: Simultaneous realization of partial oxidation of methane to syngas and N2 purification via robust ceramic oxygen-permeable membrane reactors. Chemical Engineering Journal. 2021; 419 ():129462.
Chicago/Turabian StyleShude Zhang; Saidi Wang; Yun Jin; Jian Song; Xiuxia Meng; Bo Meng; Naitao Yang; Xiaoyao Tan; Zhonghua Zhu; Shaomin Liu. 2021. "One stone two birds: Simultaneous realization of partial oxidation of methane to syngas and N2 purification via robust ceramic oxygen-permeable membrane reactors." Chemical Engineering Journal 419, no. : 129462.
As a new way of power generation, direct carbon solid oxide fuel cells (DC-SOFCs) exhibit great potential in solution of energy crisis and environmental pollution. According to the working principle, the cell operation is a kinetically controlled process, and the reverse Boudouard reaction is the rate-determining step of the whole system. In this study, a Sr-based catalyst is successfully introduced to accelerate carbon gasification and thus enhance cell performance of DC-SOFCs. The electrochemical performance of DC-SOFCs operated on coconut active charcoal with various Sr loading contents (3 wt%–10 wt%), are studied and compared with that of DC-SOFCs with traditional Fe-catalyzed carbon fuel. Experimental results demonstrate that the best output of 316 mW cm−2 is achieved from the single cell powered with 5 wt% Sr-loaded coconut active charcoal at 850 °C, higher than those of DC-SOFCs fueled by pure and 5 wt% Fe-loaded active charcoal. The superiority of the Sr-based catalyst is also demonstrated by the operation stability of the corresponding DC-SOFC, which displays a relatively long operation time of 22.68 h at 0.25 A cm−2 with the fuel utilization of 18.3%. The SEM/EDX results indicate that the Sr-based catalyst exhibits good stability without agglomeration during cell operation at high temperature. In addition, the carbon gasification mechanism catalyzed by Sr-based catalyst is also proposed on the basis of these properties. This study indicates that the designed Sr-loaded coconut active charcoal is expected to be an alternative carbon fuel for DC-SOFCs.
Fangyong Yu; Tingting Han; Yishang Wang; Yujiao Xie; Jinjin Zhang; Haibin Sun; Jie Xiao; Naitao Yang. Performance improvement of a direct carbon solid oxide fuel cell via strontium-catalyzed carbon gasification. International Journal of Hydrogen Energy 2020, 45, 23368 -23377.
AMA StyleFangyong Yu, Tingting Han, Yishang Wang, Yujiao Xie, Jinjin Zhang, Haibin Sun, Jie Xiao, Naitao Yang. Performance improvement of a direct carbon solid oxide fuel cell via strontium-catalyzed carbon gasification. International Journal of Hydrogen Energy. 2020; 45 (43):23368-23377.
Chicago/Turabian StyleFangyong Yu; Tingting Han; Yishang Wang; Yujiao Xie; Jinjin Zhang; Haibin Sun; Jie Xiao; Naitao Yang. 2020. "Performance improvement of a direct carbon solid oxide fuel cell via strontium-catalyzed carbon gasification." International Journal of Hydrogen Energy 45, no. 43: 23368-23377.
Highly stable and anti-swelling two-dimensional (2D) MXene (Ti2C3Tx) membranes can be applied for ion sieving and water purification under external voltage. This paper shows the effective ion sieving of mixed K+/Pb2+ pairs and the high rejection of the heavy metal ions (Pb2+) through a thermal cross-linked 2D MXene membrane by exerting external voltage. Due to the dehydration and cross-linking of hydroxyls during the drying process, the interlayer spacing of MXene membrane is tuned to be 6.7∼7.27 Å, which lies in the selective ion sieving size of the mixed K+ and Pb2+. The rejection of hydrated Pb2+ is up to 99 %, while the hydrated K+ can smoothly transport the channels of MXene membrane under external voltage. For 365-nm-thick MXene membrane, the separator factor of mixed K+ and Pb2+ reaches up to 78 under an applied voltage of 16.5 V. Furthermore, the application of external voltage doesn’t result in swelling of MXene membrane, showing stable separation of K+/Pb2+ pairs with effective rejection of Pb2+. The high rejection of Pb2+ and good anti-swelling demonstrate the stability of the resultant MXene membranes. Our work indicates that the thermal cross-linked MXene membrane is a promising alternative for ion sieving and the rejection of heavy metal ions.
Yiyi Fan; Jinyong Li; Saidi Wang; Xiuxia Meng; Weimin Zhang; Yun Jin; Naitao Yang; Xiaoyao Tan; Jiaquan Li; Shaomin Liu. Voltage-enhanced ion sieving and rejection of Pb2+ through a thermally cross-linked two-dimensional MXene membrane. Chemical Engineering Journal 2020, 401, 126073 .
AMA StyleYiyi Fan, Jinyong Li, Saidi Wang, Xiuxia Meng, Weimin Zhang, Yun Jin, Naitao Yang, Xiaoyao Tan, Jiaquan Li, Shaomin Liu. Voltage-enhanced ion sieving and rejection of Pb2+ through a thermally cross-linked two-dimensional MXene membrane. Chemical Engineering Journal. 2020; 401 ():126073.
Chicago/Turabian StyleYiyi Fan; Jinyong Li; Saidi Wang; Xiuxia Meng; Weimin Zhang; Yun Jin; Naitao Yang; Xiaoyao Tan; Jiaquan Li; Shaomin Liu. 2020. "Voltage-enhanced ion sieving and rejection of Pb2+ through a thermally cross-linked two-dimensional MXene membrane." Chemical Engineering Journal 401, no. : 126073.
Yanan Wang; Lipeng Zhang; Xiuxia Meng; Liu Feng; Ting Wang; Weimin Zhang; Naitao Yang. Corrigendum to “Scalable processing hollow tungsten carbide spherical superstructure as an enhanced electrocatalyst for hydrogen evolution reaction over a wide pH range” [Electrochim. Acta 319 (2019) 775–782]. Electrochimica Acta 2019, 331, 135351 .
AMA StyleYanan Wang, Lipeng Zhang, Xiuxia Meng, Liu Feng, Ting Wang, Weimin Zhang, Naitao Yang. Corrigendum to “Scalable processing hollow tungsten carbide spherical superstructure as an enhanced electrocatalyst for hydrogen evolution reaction over a wide pH range” [Electrochim. Acta 319 (2019) 775–782]. Electrochimica Acta. 2019; 331 ():135351.
Chicago/Turabian StyleYanan Wang; Lipeng Zhang; Xiuxia Meng; Liu Feng; Ting Wang; Weimin Zhang; Naitao Yang. 2019. "Corrigendum to “Scalable processing hollow tungsten carbide spherical superstructure as an enhanced electrocatalyst for hydrogen evolution reaction over a wide pH range” [Electrochim. Acta 319 (2019) 775–782]." Electrochimica Acta 331, no. : 135351.
Direct carbon solid oxide fuel cell (DC‐SOFC) is a promising energy conversion system, which can directly convert the chemical energy of biomass into electrical energy with high efficiency and low pollution. In this paper, we report a micro‐tubular DC‐SOFC fueled with the biochar derived from pepper straw for electrical power generation. The DC‐SOFC operated on pepper straw char gave a maximum power density of 217 mW cm−2, comparable to 252 mW cm−2 for that with hydrogen fuel at 850 °C. Moreover, the lifetime of the DC‐SOFC reaches 21 h at a discharge current of 100 mA with the fuel utilization of 44.4 %. The pepper straw char was characterized physically by scanning electron microscopy, energy dispersive spectrometer, X‐ray diffraction, Raman spectroscopy, thermo‐gravimetric analysis and differential scanning calorimetric. The results demonstrated that the pepper straw char contained natural catalysts in itself and their contribution on the electrochemical performance of the micro‐tubular DC‐SOFC were analyzed in detail. This article is protected by copyright. All rights reserved.
Fangyong Yu; Yishang Wang; Yujiao Xie; Weimin Zhang; Jinjin Zhang; Xiuxia Meng; Jie Xiao; Naitao Yang. A Microtubular Direct Carbon Solid Oxide Fuel Cell Operated on the Biochar Derived from Pepper Straw. Energy Technology 2019, 8, 1 .
AMA StyleFangyong Yu, Yishang Wang, Yujiao Xie, Weimin Zhang, Jinjin Zhang, Xiuxia Meng, Jie Xiao, Naitao Yang. A Microtubular Direct Carbon Solid Oxide Fuel Cell Operated on the Biochar Derived from Pepper Straw. Energy Technology. 2019; 8 (3):1.
Chicago/Turabian StyleFangyong Yu; Yishang Wang; Yujiao Xie; Weimin Zhang; Jinjin Zhang; Xiuxia Meng; Jie Xiao; Naitao Yang. 2019. "A Microtubular Direct Carbon Solid Oxide Fuel Cell Operated on the Biochar Derived from Pepper Straw." Energy Technology 8, no. 3: 1.
Clarifying the mechanism for the gas transportation in the emerging 2D materials-based membranes plays an important role on the design and performance optimization. In this work, the corresponding studies were conducted experimentally and theoretically. To this end, we measured the gas permeances of hydrogen and nitrogen from their mixture through the supported MXene lamellar membrane. Knudsen diffusion and molecular sieving through straight and tortuous nanochannels were proposed to elucidate the gas transport mechanism. The average pore diameter of 5.05 Å in straight nanochannels was calculated by linear regression in the Knudsen diffusion model. The activation energy for H2 transport in molecular sieving model was calculated to be 20.54 kJ mol−1. From the model, we can predict that the gas permeance of hydrogen (with smaller kinetic diameter) is contributed from both Knudsen diffusion and molecular sieving mechanism, but the permeance of larger molecular gases like nitrogen is sourced from Knudsen diffusion. The effects of the critical conditions such as temperature, the diffusion pore diameter of structural defects, and the thickness of the prepared MXene lamellar membrane on hydrogen and nitrogen permeance were also investigated to understand the hydrogen permeation difference from Knudsen diffusion and molecular sieving. At room temperature, the total hydrogen permeance was contributed 18% by Knudsen diffusion and 82% by molecular sieving. The modeling results indicate that molecular sieving plays a dominant role in controlling gas selectivity.
Yun Jin; Yiyi Fan; Meng; Weimin Zhang; Naitao Yang; Shaomin Liu; Jin; Fan; Yang; Liu; Xiuxia Meng; Bo Meng. Theoretical and Experimental Insights into the Mechanism for Gas Separation through Nanochannels in 2D Laminar MXene Membranes. Processes 2019, 7, 751 .
AMA StyleYun Jin, Yiyi Fan, Meng, Weimin Zhang, Naitao Yang, Shaomin Liu, Jin, Fan, Yang, Liu, Xiuxia Meng, Bo Meng. Theoretical and Experimental Insights into the Mechanism for Gas Separation through Nanochannels in 2D Laminar MXene Membranes. Processes. 2019; 7 (10):751.
Chicago/Turabian StyleYun Jin; Yiyi Fan; Meng; Weimin Zhang; Naitao Yang; Shaomin Liu; Jin; Fan; Yang; Liu; Xiuxia Meng; Bo Meng. 2019. "Theoretical and Experimental Insights into the Mechanism for Gas Separation through Nanochannels in 2D Laminar MXene Membranes." Processes 7, no. 10: 751.
Recently, the reported Perovskite/Ruddlesden‐Popper composite with significant improvement of oxygen surface kinetics has been adopted into gas separation process. Here, we report a novel La0.7Sr0.3FeO3 − δ/(La0.5Sr0.5)2CoO4 + δ (LSF‐LSC) composite hollow fiber membrane (HFM), which was characterized by X‐ray diffraction (XRD), scanning electron microscope (SEM), and thermal expansion test, etc. The O2 permeation test results indicated that, under sweeping gas of pure He (100 mL min−1), the composite HFM exhibited the superior O2 permeability (0.72 mL min−1 cm−2) at the temperature of 950°C with respect to the single La0.7Sr0.3FeO3 − δ (LSF) membrane, acid‐etched membrane, and (La0.5Sr0.5)2CoO4 + δ (LSC)‐coated membrane. Moreover, the composite membrane exhibited high CO2 tolerance as well as phase stability. The generation of hetero‐interface between Ruddlesden‐Popper phase and perovskite phase could be responsible for the improvement of the oxygen transportation over the fabricated composite membrane.
Ning Han; Junling Cheng; Dezhi Han; Guoliang Chen; Shuguang Zhang; Guangjian Wang; Naitao Yang; Shaomin Liu. Novel La 0.7 Sr 0.3 FeO 3 − δ /(La 0.5 Sr 0.5 ) 2 CoO 4 + δ composite hollow fiber membrane for O 2 separation with high CO 2 resistance. International Journal of Energy Research 2019, 43, 8890 -8897.
AMA StyleNing Han, Junling Cheng, Dezhi Han, Guoliang Chen, Shuguang Zhang, Guangjian Wang, Naitao Yang, Shaomin Liu. Novel La 0.7 Sr 0.3 FeO 3 − δ /(La 0.5 Sr 0.5 ) 2 CoO 4 + δ composite hollow fiber membrane for O 2 separation with high CO 2 resistance. International Journal of Energy Research. 2019; 43 (14):8890-8897.
Chicago/Turabian StyleNing Han; Junling Cheng; Dezhi Han; Guoliang Chen; Shuguang Zhang; Guangjian Wang; Naitao Yang; Shaomin Liu. 2019. "Novel La 0.7 Sr 0.3 FeO 3 − δ /(La 0.5 Sr 0.5 ) 2 CoO 4 + δ composite hollow fiber membrane for O 2 separation with high CO 2 resistance." International Journal of Energy Research 43, no. 14: 8890-8897.
As a possible novel cost-effective method for oxygen production from air separation, ion-conducting ceramic membranes are becoming a hot research topic due to their potentials in clean energy and environmental processes. Oxygen separation via these ion-conducting membranes is completed via the bulk diffusion and surface reactions with a typical example of perovskite oxide membranes. To improve the membrane performance, silver (Ag) deposition on the membrane surface as the catalyst is a good strategy. However, the conventional silver coating method has the problem of particle aggregation, which severely lowers the catalytic efficiency. In this work, the perovskite oxide La0.8Ca0.2Fe0.94O3−a (LCF) and silver (5% by mole) composite (LCFA) as the membrane starting material was synthesized using one-pot method via the wet complexation where the metal and silver elements were sourced from their respective nitrate salts. LCFA hollow fiber membrane was prepared and comparatively investigated for air separation together with pure LCF hollow fiber membrane. Operated from 800 to 950 °C under sweep gas mode, the pure LCF membrane displayed the fluxes from 0.04 to 0.54 mL min−1 cm−2. Compared to pure LCF, under similar operating conditions, the flux of LCFA membrane was improved by 160%.
Teng Ma; Ning Han; Bo Meng; Naitao Yang; Zhonghua Zhu; Shaomin Liu. Enhancing Oxygen Permeation via the Incorporation of Silver Inside Perovskite Oxide Membranes. Processes 2019, 7, 199 .
AMA StyleTeng Ma, Ning Han, Bo Meng, Naitao Yang, Zhonghua Zhu, Shaomin Liu. Enhancing Oxygen Permeation via the Incorporation of Silver Inside Perovskite Oxide Membranes. Processes. 2019; 7 (4):199.
Chicago/Turabian StyleTeng Ma; Ning Han; Bo Meng; Naitao Yang; Zhonghua Zhu; Shaomin Liu. 2019. "Enhancing Oxygen Permeation via the Incorporation of Silver Inside Perovskite Oxide Membranes." Processes 7, no. 4: 199.
Three-dimensional (3D) printing technique represents a revolutionary advancement in the manufacturing sector due to its unique capabilities to process the shape complexity. This work is focusing on dense 8 mol.% yttria-stabilized-zirconia (8YSZ) electrolyte fabrication via digital light processing (DLP)-stereolithography-based 3D printing technique. Multiple 8YSZ electrolyte green bodies are printed simultaneously in a batch using ceramic-resin suspension made of 30 vol% 8YSZ powder loading in a photo-curable resin. Together with an optimized debinding and sintering procedure, the 8YSZ green body changes into a dense electrolyte, and the density of the sintered electrolyte was measured as 99.96% by Archimedes' water displacement method. The symmetric cell fabricated of silver-Ce0.8Gd0.2O1.9 (Ag-GDC) as cathode/anode and dense 8YSZ electrolyte printed by DLP-stereolithography delivers a high open circuit voltage of approximately 1.04 V and a peak power density up to 176 mW·cm−2 at 850 °C by using hydrogen as the fuel and air as the oxidant. The electrochemical performance of the symmetric cell Ag-GDC|YSZ|Ag-GDC with 8YSZ electrolyte fabricated via DLP-stereolithography is comparable to that of the same cell with 8YSZ electrolyte fabricated by conventional dry pressing method. This 3D printing technique provides a novel method to prepare dense electrolytes for solid oxide fuel cell (SOFC) with good performance, suggesting a potential application for one-step fabrication of complex structure SOFC stack.
Luyang Wei; Jinjin Zhang; Fangyong Yu; Weimin Zhang; Xiuxia Meng; Naitao Yang; Shaomin Liu. A novel fabrication of yttria-stabilized-zirconia dense electrolyte for solid oxide fuel cells by 3D printing technique. International Journal of Hydrogen Energy 2019, 44, 6182 -6191.
AMA StyleLuyang Wei, Jinjin Zhang, Fangyong Yu, Weimin Zhang, Xiuxia Meng, Naitao Yang, Shaomin Liu. A novel fabrication of yttria-stabilized-zirconia dense electrolyte for solid oxide fuel cells by 3D printing technique. International Journal of Hydrogen Energy. 2019; 44 (12):6182-6191.
Chicago/Turabian StyleLuyang Wei; Jinjin Zhang; Fangyong Yu; Weimin Zhang; Xiuxia Meng; Naitao Yang; Shaomin Liu. 2019. "A novel fabrication of yttria-stabilized-zirconia dense electrolyte for solid oxide fuel cells by 3D printing technique." International Journal of Hydrogen Energy 44, no. 12: 6182-6191.
Possessing a high oxygen reduction reaction (ORR) activity is one of the most important prerequisites for the cathode to ensure an efficient solid oxide fuel cell. Herein, a highly active cathode is developed by doping the fluorine anion in anion sites of perovskite oxides (ABO3). The electrocatalytic activities of three different cathode samples including the original perovskite La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF), the doped La0.6Sr0.4Co0.2Fe0.8O2.95-δF0.05 (LSCFF0.05) and La0.6Sr0.4Co0.2Fe0.8O2.9-δF0.1 (LSCFF0.1) are comparatively investigated. The fluorine doped perovskites reveal higher electrochemical performance than the original perovskite. Based on three cathodes of LSCF, LSCFF0.05 and LSCFF0.1 operated at 850 °C, the measured area specific resistance was 0.018, 0.017 and 0.91 Ω cm2, respectively; and the respective maximum power density of the single fuel cell using the 9-μm-thick YSZ electrolyte was 754, 1005, and 737 mW cm−2. Such performance results vividly indicate that, the obtained perovskite oxyfluoride by doping an optimum amount of F ions can efficiently improve ORR activity and thus is a feasible strategy to develop cathode for high-performance solid oxide fuel cells.
Yongna Liu; Xiuxia Meng; Fangyong Yu; Mengjie Yin; Naitao Yang; Bo Meng; M. Veronica Sofianos; Shaomin Liu. Enhancing oxygen reduction reaction activity of perovskite oxides cathode for solid oxide fuel cells using a novel anion doping strategy. International Journal of Hydrogen Energy 2018, 43, 12328 -12336.
AMA StyleYongna Liu, Xiuxia Meng, Fangyong Yu, Mengjie Yin, Naitao Yang, Bo Meng, M. Veronica Sofianos, Shaomin Liu. Enhancing oxygen reduction reaction activity of perovskite oxides cathode for solid oxide fuel cells using a novel anion doping strategy. International Journal of Hydrogen Energy. 2018; 43 (27):12328-12336.
Chicago/Turabian StyleYongna Liu; Xiuxia Meng; Fangyong Yu; Mengjie Yin; Naitao Yang; Bo Meng; M. Veronica Sofianos; Shaomin Liu. 2018. "Enhancing oxygen reduction reaction activity of perovskite oxides cathode for solid oxide fuel cells using a novel anion doping strategy." International Journal of Hydrogen Energy 43, no. 27: 12328-12336.
Ning Han; Bo Meng; Naitao Yang; Jaka Sunarso; Zhonghua Zhu; Shaomin Liu. Enhancement of oxygen permeation fluxes of La0.6Sr0.4CoO3− hollow fiber membrane via macrostructure modification and (La0.5Sr0.5)2CoO4+ decoration. Chemical Engineering Research and Design 2018, 134, 487 -496.
AMA StyleNing Han, Bo Meng, Naitao Yang, Jaka Sunarso, Zhonghua Zhu, Shaomin Liu. Enhancement of oxygen permeation fluxes of La0.6Sr0.4CoO3− hollow fiber membrane via macrostructure modification and (La0.5Sr0.5)2CoO4+ decoration. Chemical Engineering Research and Design. 2018; 134 ():487-496.
Chicago/Turabian StyleNing Han; Bo Meng; Naitao Yang; Jaka Sunarso; Zhonghua Zhu; Shaomin Liu. 2018. "Enhancement of oxygen permeation fluxes of La0.6Sr0.4CoO3− hollow fiber membrane via macrostructure modification and (La0.5Sr0.5)2CoO4+ decoration." Chemical Engineering Research and Design 134, no. : 487-496.
To move towards the successful commercialization of fuel cells, emphasizing solely on the catalytic activity is not sufficient, and requirements on performance stability are also urgently to be solved. In this work, we describe a facile and robust strategy to the development of a novel Pt based catalyst with binary titanium cobalt oxide as the support. The binary titanium cobalt oxide nanotubes are characterized with hierarchical tubular porous and hollow structures that constructed by ultrathin interconnected nanosheets assembles (labeled as Ti0.8Co0.2O2 NTAs). The resultant catalyst (Pt/Ti0.8Co0.2O2 NTAs) exhibited much higher mass activity for oxygen reduction reaction (ORR) compared with the commercial Pt/C catalyst, and it also possesses excellent structure stability. The experimental data demonstrates that the novel support plays a significant role in the enhanced ORR activity, which not only acts as a robust and desirable support to afford a high dispersion for Pt nanoparticles, but also as a co-catalyst to boost the activity of the resultant catalyst via the modulation of the electronic structures of the supported Pt atoms. This work opens a new path for maximizing the ORR activity and durability by introducing porous binary titanium based oxides as the Pt support, which combines the merits of high stability, co-catalysis and doping effects.
Fangyong Yu; Yujiao Xie; Likai Wang; Naitao Yang; Xiuxia Meng; Xiaobin Wang; Xin Long Tian; Xu Yang. Platinum supported on multifunctional titanium cobalt oxide nanosheets assembles for efficient oxygen reduction reaction. Electrochimica Acta 2018, 265, 364 -371.
AMA StyleFangyong Yu, Yujiao Xie, Likai Wang, Naitao Yang, Xiuxia Meng, Xiaobin Wang, Xin Long Tian, Xu Yang. Platinum supported on multifunctional titanium cobalt oxide nanosheets assembles for efficient oxygen reduction reaction. Electrochimica Acta. 2018; 265 ():364-371.
Chicago/Turabian StyleFangyong Yu; Yujiao Xie; Likai Wang; Naitao Yang; Xiuxia Meng; Xiaobin Wang; Xin Long Tian; Xu Yang. 2018. "Platinum supported on multifunctional titanium cobalt oxide nanosheets assembles for efficient oxygen reduction reaction." Electrochimica Acta 265, no. : 364-371.
Yingying Shang; Luyang Wei; Xiuxia Meng; Bo Meng; Naitao Yang; Jaka Sunarso; Shaomin Liu. CO 2 -enhanced hydrogen permeability of dual-layered A-site deficient Ba 0.95 Ce 0.85 Tb 0.05 Zr 0.1 O 3-δ -based hollow fiber membrane. Journal of Membrane Science 2018, 546, 82 -89.
AMA StyleYingying Shang, Luyang Wei, Xiuxia Meng, Bo Meng, Naitao Yang, Jaka Sunarso, Shaomin Liu. CO 2 -enhanced hydrogen permeability of dual-layered A-site deficient Ba 0.95 Ce 0.85 Tb 0.05 Zr 0.1 O 3-δ -based hollow fiber membrane. Journal of Membrane Science. 2018; 546 ():82-89.
Chicago/Turabian StyleYingying Shang; Luyang Wei; Xiuxia Meng; Bo Meng; Naitao Yang; Jaka Sunarso; Shaomin Liu. 2018. "CO 2 -enhanced hydrogen permeability of dual-layered A-site deficient Ba 0.95 Ce 0.85 Tb 0.05 Zr 0.1 O 3-δ -based hollow fiber membrane." Journal of Membrane Science 546, no. : 82-89.
Xiuxia Meng; Yongna Liu; Naitao Yang; Xiaoyao Tan; Jian Liu; João C. Diniz da Costa; Shaomin Liu. Highly compact and robust hollow fiber solid oxide cells for flexible power generation and gas production. Applied Energy 2017, 205, 741 -748.
AMA StyleXiuxia Meng, Yongna Liu, Naitao Yang, Xiaoyao Tan, Jian Liu, João C. Diniz da Costa, Shaomin Liu. Highly compact and robust hollow fiber solid oxide cells for flexible power generation and gas production. Applied Energy. 2017; 205 ():741-748.
Chicago/Turabian StyleXiuxia Meng; Yongna Liu; Naitao Yang; Xiaoyao Tan; Jian Liu; João C. Diniz da Costa; Shaomin Liu. 2017. "Highly compact and robust hollow fiber solid oxide cells for flexible power generation and gas production." Applied Energy 205, no. : 741-748.
Jingchang Zhu; Xiuxia Meng; Jinping Zhao; Yun Jin; Naitao Yang; Shuguang Zhang; Jaka Sunarso; Shaomin Liu. Facile hydrogen/nitrogen separation through graphene oxide membranes supported on YSZ ceramic hollow fibers. Journal of Membrane Science 2017, 535, 143 -150.
AMA StyleJingchang Zhu, Xiuxia Meng, Jinping Zhao, Yun Jin, Naitao Yang, Shuguang Zhang, Jaka Sunarso, Shaomin Liu. Facile hydrogen/nitrogen separation through graphene oxide membranes supported on YSZ ceramic hollow fibers. Journal of Membrane Science. 2017; 535 ():143-150.
Chicago/Turabian StyleJingchang Zhu; Xiuxia Meng; Jinping Zhao; Yun Jin; Naitao Yang; Shuguang Zhang; Jaka Sunarso; Shaomin Liu. 2017. "Facile hydrogen/nitrogen separation through graphene oxide membranes supported on YSZ ceramic hollow fibers." Journal of Membrane Science 535, no. : 143-150.
Here, oxygen fluxes through an electronically short‐circuited asymmetric Ag‐YSZ|YSZ|LSM‐YSZ hollow fiber prepared via a combined spinning and sintering route were tested and correlated to an explicit oxygen permeation model. The average oxygen permeation through such asymmetric hollow fiber with a 27 μm‐thick YSZ dense layer reached 0.52 mL (STP) cm−2 min−1 at 1173 K. From the model results, we can obtain the characteristic thickness, the effects of the temperature, and the effect of He sweep gas flow rate to the individual step contribution. The oxygen partial pressure variation in the permeate side, the local oxygen flux, and the three‐different resistance distribution along the axial direction of the asymmetric hollow fiber are theoretically studied; providing guidelines to further improve the membrane performance for oxygen separation. © 2017 American Institute of Chemical Engineers AIChE J, 63: 3491–3500, 2017
Yun Jin; Xiuxia Meng; Naitao Yang; Bo Meng; Jaka Sunarso; Shaomin Liu. Modeling study of oxygen permeation through an electronically short‐circuited YSZ‐based asymmetric hollow fiber membrane. AIChE Journal 2017, 63, 3491 -3500.
AMA StyleYun Jin, Xiuxia Meng, Naitao Yang, Bo Meng, Jaka Sunarso, Shaomin Liu. Modeling study of oxygen permeation through an electronically short‐circuited YSZ‐based asymmetric hollow fiber membrane. AIChE Journal. 2017; 63 (8):3491-3500.
Chicago/Turabian StyleYun Jin; Xiuxia Meng; Naitao Yang; Bo Meng; Jaka Sunarso; Shaomin Liu. 2017. "Modeling study of oxygen permeation through an electronically short‐circuited YSZ‐based asymmetric hollow fiber membrane." AIChE Journal 63, no. 8: 3491-3500.
Xiuxia Meng; Jaka Sunarso; Yun Jin; Xiuxiu Bi; Naitao Yang; Xiaoyao Tan; Shaobin Wang; Shaomin Liu. Robust CO2 and H2 resistant triple-layered (Ag-YSZ)/YSZ/(La0.8Sr0.2MnO3-δ-YSZ) hollow fiber membranes with short-circuit for oxygen permeation. Journal of Membrane Science 2017, 524, 596 -603.
AMA StyleXiuxia Meng, Jaka Sunarso, Yun Jin, Xiuxiu Bi, Naitao Yang, Xiaoyao Tan, Shaobin Wang, Shaomin Liu. Robust CO2 and H2 resistant triple-layered (Ag-YSZ)/YSZ/(La0.8Sr0.2MnO3-δ-YSZ) hollow fiber membranes with short-circuit for oxygen permeation. Journal of Membrane Science. 2017; 524 ():596-603.
Chicago/Turabian StyleXiuxia Meng; Jaka Sunarso; Yun Jin; Xiuxiu Bi; Naitao Yang; Xiaoyao Tan; Shaobin Wang; Shaomin Liu. 2017. "Robust CO2 and H2 resistant triple-layered (Ag-YSZ)/YSZ/(La0.8Sr0.2MnO3-δ-YSZ) hollow fiber membranes with short-circuit for oxygen permeation." Journal of Membrane Science 524, no. : 596-603.