Journal ArticleDOI
Carbon Materials for Chemical Capacitive Energy Storage
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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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Tuning the porous structure of carbon hosts for loading sulfur toward long lifespan cathode materials for Li–S batteries
TL;DR: In this paper, the pore structure of the carbon host can be easily controlled by adjusting the activation concentration of KOH, and is found to be directly related to the battery performance of sulfur loaded inside.
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Nitrogen-enriched hierarchically porous carbons prepared from polybenzoxazine for high-performance supercapacitors.
TL;DR: Nitrogen-enriched hierarchically porous carbons (HPCs) were synthesized from a novel nitrile-functionalized benzoxazine based on Benzoxazine chemistry using a soft-templating method and a potassium hydroxide (KOH) chemical activation method and used as electrode materials for supercapacitors.
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Micro-mesoporous carbon spheres derived from carrageenan as electrode material for supercapacitors
TL;DR: The polysaccharide carrageenan is used as a natural precursor to prepare micro-mesoporous carbon spheres as discussed by the authors, which have high surface area and large pore volume.
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Dominating Role of Ni0 on the Interface of Ni/NiO for Enhanced Hydrogen Evolution Reaction
TL;DR: A convenient protocol for the fabrication of NiOx@bamboo-like carbon nanotube hybrids (NiOx@BCNTs) is designed, which validates that the inherent high Ni0 ratio and the Ni0 on the interface of Ni/NiO play a vital role in the outstanding catalytic performance.
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Reduced graphene oxide/titanium dioxide composites for supercapacitor electrodes: shape and coupling effects
Chengcheng Xiang,Chengcheng Xiang,Ming Li,Mingjia Zhi,Mingjia Zhi,Ayyakkannu Manivannan,Nianqiang Wu +6 more
TL;DR: In this paper, the specific capacitance of rGO-TiO2 composites is higher than that of monolithic rGO, TiO2 NPs or NBs, which is attributed to the nanobelt's unique shape, better charge transport property and larger area of contact with the rGO nanosheet.
References
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