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The pressing concerns of environmental sustainability and growing needs of clean energy have raised the demands of carbon and organic based energy storage materials to a higher level. Redox-active organic-carbon composites electrodes are emerging to be enablers for high-performance, high power and long-lasting energy storage solutions, especially for electrochemical capacitors (EC). This review discusses the electrochemical redox active organic compounds and their composites with various carbonaceous materials focusing on capacitive performance. Starting with the most common conducting polymers, we expand the scope to other emerging redox active molecules, compounds and polymers as well as common carbonaceous substrates in composite electrodes, including graphene, carbon nanotube and activated carbon. We then discuss the first-principles computational studies pertaining to the interactions between the components in the composites. The fabrication methodologies for the composites with thin organic coatings are presented with their merits and shortcomings. The capacitive performances and features of the redox active organic-carbon composite electrodes are then summarized. Finally, we offer some perspectives and future directions to achieve a fundamental understanding and to better design organic-carbon composite electrodes for ECs.
Jeanne N’Diaye; Raunaq Bagchi; Jane Howe; Keryn Lian. Redox Active Organic-Carbon Composites for Capacitive Electrodes: A Review. Sustainable Chemistry 2021, 2, 407 -440.
AMA StyleJeanne N’Diaye, Raunaq Bagchi, Jane Howe, Keryn Lian. Redox Active Organic-Carbon Composites for Capacitive Electrodes: A Review. Sustainable Chemistry. 2021; 2 (3):407-440.
Chicago/Turabian StyleJeanne N’Diaye; Raunaq Bagchi; Jane Howe; Keryn Lian. 2021. "Redox Active Organic-Carbon Composites for Capacitive Electrodes: A Review." Sustainable Chemistry 2, no. 3: 407-440.
A tetraphenylporphyrin sulfonate-carbon nanotube (TPPS-CNT) composite was developed and characterized for capacitive charge storage. Density functional theory (DFT) simulations suggested that the adsorption of TPPS on CNT was energetically favored with a strong contribution of the sulfonate groups. The composite electrodes, with a < 2 nm TPPS layer, had up to 80 % increase in volumetric capacitance and faster kinetics over the bare CNT electrodes. The adsorption of TPPS on CNT also led to a 9 % reduction in HOMO-LUMO gap of TPPS, which could be the origin of the synergy for improved performance. The highly capacitive TPPS-CNT composite electrode also had high cycling stability after 10,000 cycles. In a two-electrode symmetrical device, the TPPS-CNT maintained a higher capacitance than that of the CNT device. The device based on the composite materials also had lower charge transfer resistance and faster rate response, very promising for high-rate electrochemical charge storage.
Jeanne N'Diaye; Mohamed Elshazly; Keryn Lian. Capacitive charge storage of tetraphenylporphyrin sulfonate-CNT composite electrodes. Electrochimica Acta 2021, 389, 138593 .
AMA StyleJeanne N'Diaye, Mohamed Elshazly, Keryn Lian. Capacitive charge storage of tetraphenylporphyrin sulfonate-CNT composite electrodes. Electrochimica Acta. 2021; 389 ():138593.
Chicago/Turabian StyleJeanne N'Diaye; Mohamed Elshazly; Keryn Lian. 2021. "Capacitive charge storage of tetraphenylporphyrin sulfonate-CNT composite electrodes." Electrochimica Acta 389, no. : 138593.
A stable and magnetic graphene oxide (GO) foam–polyethyleneimine–iron nanoparticle (GO–PEI–FeNPs) composite has been fabricated for removal of endocrine disruptors—bisphenol A, progesterone and norethisterone—from aqueous solution. The foam with porous and hierarchical structures was synthesized by reduction of graphene oxide layers coupled with co-precipitation of iron under a hydrothermal system using polyethyleneimine as a cross linker. The presence of magnetic iron nanoparticles facilitates the separation process after decontamination. The foam was fully characterized by surface and structural scanning electron microscopy, Fourier transform infrared spectroscopy, Raman spectroscopy and X-ray photoelectron spectroscopy. The foam exhibits a high adsorption capacity, and the maximum adsorption percentages are 68%, 49% and 80% for bisphenol A, progesterone and norethisterone, respectively. The adsorption process of bisphenol A is explained according to the Langmuir model, whereas the Freundlich model was used for progesterone and norethisterone adsorption.
Jeanne N’Diaye; Sujittra Poorahong; Ons Hmam; Gastón Contreras Jiménez; Ricardo Izquierdo; Mohamed Siaj. Reduced Graphene Oxide-Based Foam as an Endocrine Disruptor Adsorbent in Aqueous Solutions. Membranes 2020, 10, 340 .
AMA StyleJeanne N’Diaye, Sujittra Poorahong, Ons Hmam, Gastón Contreras Jiménez, Ricardo Izquierdo, Mohamed Siaj. Reduced Graphene Oxide-Based Foam as an Endocrine Disruptor Adsorbent in Aqueous Solutions. Membranes. 2020; 10 (11):340.
Chicago/Turabian StyleJeanne N’Diaye; Sujittra Poorahong; Ons Hmam; Gastón Contreras Jiménez; Ricardo Izquierdo; Mohamed Siaj. 2020. "Reduced Graphene Oxide-Based Foam as an Endocrine Disruptor Adsorbent in Aqueous Solutions." Membranes 10, no. 11: 340.
Synergy between a redox active polymer and a polyoxometalate leading to an extended voltage window and capacitive charge storage.
Jeanne N'Diaye; Shaheer Siddiqui; Kin Long (Thomas) Pak; Keryn Lian. Layer-by-layer assembly of inorganic–organic molybdovanadogermanic (GeMoV)-polyluminol composite electrodes for capacitive charge storage. Journal of Materials Chemistry A 2020, 8, 23463 -23472.
AMA StyleJeanne N'Diaye, Shaheer Siddiqui, Kin Long (Thomas) Pak, Keryn Lian. Layer-by-layer assembly of inorganic–organic molybdovanadogermanic (GeMoV)-polyluminol composite electrodes for capacitive charge storage. Journal of Materials Chemistry A. 2020; 8 (44):23463-23472.
Chicago/Turabian StyleJeanne N'Diaye; Shaheer Siddiqui; Kin Long (Thomas) Pak; Keryn Lian. 2020. "Layer-by-layer assembly of inorganic–organic molybdovanadogermanic (GeMoV)-polyluminol composite electrodes for capacitive charge storage." Journal of Materials Chemistry A 8, no. 44: 23463-23472.
A polymerized luminol carbon nanotube (CNT) composite electrode was developed via an in‐situ chemical polymerization (CpLum) process. Density functional theory (DFT) simulation suggested the luminol molecules were preferentially aligned flat on CNT. This was further demonstrated by morphological study which showed the CpLum wrapped around each CNT tube homogeneously with an average thickness of 4.5± 1.5 nm. The surface chemical analysis by X‐ray photoelectron spectroscopy (XPS) revealed a progressive increase in the nitrogen content and stabilized at 9%. Deconvolution of the high‐resolution N1s spectra suggested the presence of secondary and tertiary amine functional groups which are the signatures of polymerized luminol. The composite electrodes exhibited a pseudocapacitive‐like behavior with 3.5 times increase in charge storage. The contributions from the CpLum coating and CNT substrate were differentiated and were further deconvoluted to quantify the capacitive charge storage of each component. The thin CpLum coating contributed 70% of the total charge storage through pseudocapacitance. CpLum‐CNT electrodes also showed a high rate capability and good cycling stability, very promising for electrochemical capacitors.
Jeanne N'diaye; Jin Hyun Chang; Keryn Lian. The Capacitive Behavior of Polyluminol on Carbon Nanotubes Electrodes. ChemElectroChem 2019, 6, 5454 -5461.
AMA StyleJeanne N'diaye, Jin Hyun Chang, Keryn Lian. The Capacitive Behavior of Polyluminol on Carbon Nanotubes Electrodes. ChemElectroChem. 2019; 6 (21):5454-5461.
Chicago/Turabian StyleJeanne N'diaye; Jin Hyun Chang; Keryn Lian. 2019. "The Capacitive Behavior of Polyluminol on Carbon Nanotubes Electrodes." ChemElectroChem 6, no. 21: 5454-5461.
Electrochemically active polyluminol was synthesized using an oxidative chemical polymerization reaction. The chemically polymerized luminol (CpLum) exhibited reversible oxidation and reduction reactions with fast kinetics. From Fourier transform infrared spectroscopy analyses, the polymerization occurred by the conversion of primary amine groups into secondary amine groups. The polymer contained benzoid and quinoid segments which were confirmed by UV–visible spectroscopy and X-ray photoelectron spectroscopy. Thermal analysis revealed the semi-crystalline nature of CpLum, with two thermal events at 99 °C and 152 °C corresponding to a glass transition and a melting temperature. The interesting features and electrochemical activities may lead to applications in energy storage.
Jeanne N'Diaye; Keryn Lian. Investigation of the chemical structure and electrochemical activity of a chemically polymerized luminol. Journal of Electroanalytical Chemistry 2019, 839, 90 -95.
AMA StyleJeanne N'Diaye, Keryn Lian. Investigation of the chemical structure and electrochemical activity of a chemically polymerized luminol. Journal of Electroanalytical Chemistry. 2019; 839 ():90-95.
Chicago/Turabian StyleJeanne N'Diaye; Keryn Lian. 2019. "Investigation of the chemical structure and electrochemical activity of a chemically polymerized luminol." Journal of Electroanalytical Chemistry 839, no. : 90-95.