Journal ArticleDOI
Carbon Materials for Chemical Capacitive Energy Storage
TLDR
In order to further improve the power and energy densities of the capacitors, carbon-based composites combining electrical double layer capacitors (EDLC)-capacitance and pseudo-Capacitance have been explored and show not only enhanced capacitance, but as well good cyclability.Abstract:
Carbon materials have attracted intense interests as electrode materials for electrochemical capacitors, because of their high surface area, electrical conductivity, chemical stability and low cost. Activated carbons produced by different activation processes from various precursors are the most widely used electrodes. Recently, with the rapid growth of nanotechnology, nanostructured electrode materials, such as carbon nanotubes and template-synthesized porous carbons have been developed. Their unique electrical properties and well controlled pore sizes and structures facilitate fast ion and electron transportation. In order to further improve the power and energy densities of the capacitors, carbon-based composites combining electrical double layer capacitors (EDLC)-capacitance and pseudo-capacitance have been explored. They show not only enhanced capacitance, but as well good cyclability. In this review, recent progresses on carbon-based electrode materials are summarized, including activated carbons, carbon nanotubes, and template-synthesized porous carbons, in particular mesoporous carbons. Their advantages and disadvantages as electrochemical capacitors are discussed. At the end of this review, the future trends of electrochemical capacitors with high energy and power are proposed.read more
Citations
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Journal ArticleDOI
Polyvinyl Alcohol-derived carbon nanofibers/carbon nanotubes/sulfur electrode with honeycomb-like hierarchical porous structure for the stable-capacity lithium/sulfur batteries
Nanping Deng,Weimin Kang,Jingge Ju,Lanlan Fan,Xupin Zhuang,Ma Xiaomin,He Hongsheng,Zhao Yixia,Bowen Cheng +8 more
TL;DR: In this article, the honeycomb-like hierarchical porous carbon nanofibers (PCNFs)-carbon nanotubes (CNTs)-sulfur(S) composite electrode is successfully desgined and prepared through ball-milling and heating method, in which the PCNFs are carbonized from fibers in the membrane composed of Polyvinyl Alcohol and Polytetrafluoroethylene by electroblown spinning technology.
Journal ArticleDOI
Super-activated biochar from poultry litter for high-performance supercapacitors
Daniele Pontiroli,Silvio Scaravonati,Giacomo Magnani,Laura Fornasini,Danilo Bersani,Giovanni Bertoni,Chiara Milanese,Alessandro Girella,Francesca Ridi,Roberto Verucchi,Luciana Mantovani,Alessio Malcevschi,Mauro Riccò +12 more
TL;DR: In this article, a hierarchically-porous super-activated carbon originating from organic waste with specific surface area exceeding 3000m2/g was obtained starting from biochar derived by the pyrolysis of poultry litter.
Journal ArticleDOI
One-pot synthesis of ZnS nanowires/Cu7S4 nanoparticles/reduced graphene oxide nanocomposites for supercapacitor and photocatalysis applications.
Xin Li,Jian Cao,Lili Yang,Maobin Wei,Xiaoyan Liu,Qianyu Liu,Yuanze Hong,Yue Zhou,Jinghai Yang +8 more
TL;DR: The zinc sulfide nanowires/Cu7S4 NPs/rGO nanocomposites exhibited superior photocatalytic activity under ultraviolet and visible light irradiation because of the high surface area, small interface transfer resistance and efficient separation of photogenerated electrons and holes caused by the synergistic effect between ZnS NWs, Cu7S 4 NPs and rGO.
Journal ArticleDOI
Temperature dependence of the electrical conductivity of activated carbons prepared from vine shoots by physical and chemical activation methods
Adrián Barroso-Bogeat,María Alexandre-Franco,C. Fernández-González,Antonio Macías-García,Vicente Gómez-Serrano +4 more
TL;DR: In this article, a broadly varied series of activated carbons (ACs) was prepared from vine shoots (VS) by the method of physical activation in air, CO2 and steam, and by the process of chemical activation with H3PO4, ZnCl2 and KOH aqueous solutions.
Journal ArticleDOI
Development of New Effective Sorbents Based on Nanomagnetite.
TL;DR: Magnetic hybrid nanocomposite material based on the kraft lignin was prepared by the co-precipitating method and the adsorption capacity and kinetic sorption characteristics of the composite material were determined.
References
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