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The polymer electrolyte membrane (PEM) is a key component in the PEM fuel cell (PEMFC) system. This study highlights the latest development of PEM technology by combining Nafion® and ionic liquids, namely 2–Hydroxyethylammonium Formate (2–HEAF) and Propylammonium Nitrate (PAN). Test membranes were prepared using the casting technique. The impact of functional groups in grafting, morphology, thermal stability, ion exchange capacity, water absorption, swelling and proton conductivity for the prepared membranes is discussed. Both hybrid membranes showed higher values in ion exchange capacity, water uptake and swelling rate as compared to the recast pure Nafion® membrane. The results also show that the proton conductivity of Nafion®/2–HEAF and Nafion®/PAN membranes increased with increasing ionic liquid concentrations. The maximum values of proton conductivity for Nafion®/2–HEAF and Nafion®/PAN membranes were 2.87 and 4.55 mScm−1, respectively, equivalent to 2.2 and 3.5 times that of the pure recast Nafion® membrane.
Jonathan Goh; Ainul Abdul Rahim; Mohd Masdar; Loh Shyuan. Enhanced Performance of Polymer Electrolyte Membranes via Modification with Ionic Liquids for Fuel Cell Applications. Membranes 2021, 11, 395 .
AMA StyleJonathan Goh, Ainul Abdul Rahim, Mohd Masdar, Loh Shyuan. Enhanced Performance of Polymer Electrolyte Membranes via Modification with Ionic Liquids for Fuel Cell Applications. Membranes. 2021; 11 (6):395.
Chicago/Turabian StyleJonathan Goh; Ainul Abdul Rahim; Mohd Masdar; Loh Shyuan. 2021. "Enhanced Performance of Polymer Electrolyte Membranes via Modification with Ionic Liquids for Fuel Cell Applications." Membranes 11, no. 6: 395.
Hydrogen storage nanocomposites prepared by high energy reactive ball milling of magnesium and vanadium alloys in hydrogen (HRBM) are characterised by exceptionally fast hydrogenation rates and a significantly decreased hydride decomposition temperature. Replacement of vanadium in these materials with vanadium-rich Ferrovanadium (FeV, V80Fe20) is very cost efficient and is suggested as a durable way towards large scale applications of Mg-based hydrogen storage materials. The current work presents the results of the experimental study of Mg–(FeV) hydrogen storage nanocomposites prepared by HRBM of Mg powder and FeV (0–50 mol.%). The additives of FeV were shown to improve hydrogen sorption performance of Mg including facilitation of the hydrogenation during the HRBM and improvements of the dehydrogenation/re-hydrogenation kinetics. The improvements resemble the behaviour of pure vanadium metal, and the Mg–(FeV) nanocomposites exhibited a good stability of the hydrogen sorption performance during hydrogen absorption – desorption cycling at T = 350 °C caused by a stability of the cycling performance of the nanostructured FeV acting as a catalyst. Further improvement of the cycle stability including the increase of the reversible hydrogen storage capacity and acceleration of H2 absorption kinetics during the cycling was observed for the composites containing carbon additives (activated carbon, graphite or multi-walled carbon nanotubes; 5 wt%), with the best performance achieved for activated carbon.
Mykhaylo Lototskyy; Jonathan Goh; Moegamat Wafeeq Davids; Vladimir Linkov; Lindiwe Khotseng; Bulelwa Ntsendwana; Roman Denys; Volodymyr A. Yartys. Nanostructured hydrogen storage materials prepared by high-energy reactive ball milling of magnesium and ferrovanadium. International Journal of Hydrogen Energy 2019, 44, 6687 -6701.
AMA StyleMykhaylo Lototskyy, Jonathan Goh, Moegamat Wafeeq Davids, Vladimir Linkov, Lindiwe Khotseng, Bulelwa Ntsendwana, Roman Denys, Volodymyr A. Yartys. Nanostructured hydrogen storage materials prepared by high-energy reactive ball milling of magnesium and ferrovanadium. International Journal of Hydrogen Energy. 2019; 44 (13):6687-6701.
Chicago/Turabian StyleMykhaylo Lototskyy; Jonathan Goh; Moegamat Wafeeq Davids; Vladimir Linkov; Lindiwe Khotseng; Bulelwa Ntsendwana; Roman Denys; Volodymyr A. Yartys. 2019. "Nanostructured hydrogen storage materials prepared by high-energy reactive ball milling of magnesium and ferrovanadium." International Journal of Hydrogen Energy 44, no. 13: 6687-6701.
Mg nanoparticles in Mg–Ti–C do not sinter but, on the contrary, are further refined thus dramatically improving the cycle stability.
Mykhaylo V Lototskyy; Roman V Denys; Volodymyr A. Yartys; Jon Eriksen; Jonathan Goh; Serge Nyallang Nyamsi; Cordellia Sita; Franscious Cummings. An outstanding effect of graphite in nano-MgH2–TiH2 on hydrogen storage performance. Journal of Materials Chemistry A 2018, 6, 10740 -10754.
AMA StyleMykhaylo V Lototskyy, Roman V Denys, Volodymyr A. Yartys, Jon Eriksen, Jonathan Goh, Serge Nyallang Nyamsi, Cordellia Sita, Franscious Cummings. An outstanding effect of graphite in nano-MgH2–TiH2 on hydrogen storage performance. Journal of Materials Chemistry A. 2018; 6 (23):10740-10754.
Chicago/Turabian StyleMykhaylo V Lototskyy; Roman V Denys; Volodymyr A. Yartys; Jon Eriksen; Jonathan Goh; Serge Nyallang Nyamsi; Cordellia Sita; Franscious Cummings. 2018. "An outstanding effect of graphite in nano-MgH2–TiH2 on hydrogen storage performance." Journal of Materials Chemistry A 6, no. 23: 10740-10754.
An experimental study was undertaken on the preparation, by High Energy Reactive Ball Milling in Hydrogen (HRBM), of hydrogen storage materials on the basis of Mg mixed with FeTiO3, and their further characterisation (SEM, TEM, XRD, volumetric H2 absorption studies, TDS). It was shown that the addition of ⩾5 wt.% of FeTiO3 dramatically improves H absorption in Mg and reduces the temperature of further H desorption. Subsequent addition of carbon, including Graphite (G), Activated Carbon (AC) and Multi-Wall Carbon Nanotubes (MWCNT) results in some slowing of the H absorption down but significantly improves re-hydrogenation performances of the material, which in time is able to re-absorb about 5 wt.% H in less than 5–7 min (15 bar H2/250 °C). These improvements were associated with the reduction of FeTiO3 to yield nanoparticles of Fe and TiFe(Hx).
M. Lototskyy; M.W. Davids; J.M. Sibanyoni; J. Goh; Bruno G. Pollet. Magnesium-based hydrogen storage nanomaterials prepared by high energy reactive ball milling in hydrogen at the presence of mixed titanium–iron oxide. Journal of Alloys and Compounds 2014, 645, S454 -S459.
AMA StyleM. Lototskyy, M.W. Davids, J.M. Sibanyoni, J. Goh, Bruno G. Pollet. Magnesium-based hydrogen storage nanomaterials prepared by high energy reactive ball milling in hydrogen at the presence of mixed titanium–iron oxide. Journal of Alloys and Compounds. 2014; 645 ():S454-S459.
Chicago/Turabian StyleM. Lototskyy; M.W. Davids; J.M. Sibanyoni; J. Goh; Bruno G. Pollet. 2014. "Magnesium-based hydrogen storage nanomaterials prepared by high energy reactive ball milling in hydrogen at the presence of mixed titanium–iron oxide." Journal of Alloys and Compounds 645, no. : S454-S459.
Rongfang Wang; Tiaobao Zhou; Hao Li; Hui Wang; Hanqing Feng; Jonathan Goh; Shan Ji. Nitrogen-rich mesoporous carbon derived from melamine with high electrocatalytic performance for oxygen reduction reaction. Journal of Power Sources 2014, 261, 238 -244.
AMA StyleRongfang Wang, Tiaobao Zhou, Hao Li, Hui Wang, Hanqing Feng, Jonathan Goh, Shan Ji. Nitrogen-rich mesoporous carbon derived from melamine with high electrocatalytic performance for oxygen reduction reaction. Journal of Power Sources. 2014; 261 ():238-244.
Chicago/Turabian StyleRongfang Wang; Tiaobao Zhou; Hao Li; Hui Wang; Hanqing Feng; Jonathan Goh; Shan Ji. 2014. "Nitrogen-rich mesoporous carbon derived from melamine with high electrocatalytic performance for oxygen reduction reaction." Journal of Power Sources 261, no. : 238-244.
Yanjiao Ma; Hui Wang; Shan Ji; Jonathan Goh; Hanqing Feng; Rongfang Wang. Highly active Vulcan carbon composite for oxygen reduction reaction in alkaline medium. Electrochimica Acta 2014, 133, 391 -398.
AMA StyleYanjiao Ma, Hui Wang, Shan Ji, Jonathan Goh, Hanqing Feng, Rongfang Wang. Highly active Vulcan carbon composite for oxygen reduction reaction in alkaline medium. Electrochimica Acta. 2014; 133 ():391-398.
Chicago/Turabian StyleYanjiao Ma; Hui Wang; Shan Ji; Jonathan Goh; Hanqing Feng; Rongfang Wang. 2014. "Highly active Vulcan carbon composite for oxygen reduction reaction in alkaline medium." Electrochimica Acta 133, no. : 391-398.
Bruno G. Pollet; Jonathan T.E. Goh. The importance of ultrasonic parameters in the preparation of fuel cell catalyst inks. Electrochimica Acta 2014, 128, 292 -303.
AMA StyleBruno G. Pollet, Jonathan T.E. Goh. The importance of ultrasonic parameters in the preparation of fuel cell catalyst inks. Electrochimica Acta. 2014; 128 ():292-303.
Chicago/Turabian StyleBruno G. Pollet; Jonathan T.E. Goh. 2014. "The importance of ultrasonic parameters in the preparation of fuel cell catalyst inks." Electrochimica Acta 128, no. : 292-303.