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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.

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Citations
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Journal ArticleDOI

Poly(ionic liquid)-assisted reduction of graphene oxide to achieve high-performance composite electrodes

TL;DR: In this article, a PIL-rGO composite was used as the supercapacitor electrode associated with a compatible IL of 1-butyl-3-methylimidazolium hexafluorophosphate as the electrolyte.
Journal ArticleDOI

Design and theoretical study of carbon-based supercapacitors especially exhibiting superior rate capability by the synergistic effect of nitrogen and phosphor dopants

TL;DR: In this article, a method of in-situ doping a phosphorus atom into a nitrogen-containing hierarchical porous carbon nanosheet is proposed, which is realized by a self-synthesis and template-assisted assembly process.
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Particulate Inverse Opal Carbon Electrodes for Lithium-Ion Batteries

TL;DR: Inverse opal carbon materials were used as anodes for lithium ion batteries and electrochemical behavior of these samples as anode materials investigated, finding no improvement in the reversible specific capacity or the cycle performance.
Journal ArticleDOI

Biomass waste derived carbon nanoballs aggregation networks-based aerogels as electrode material for electrochemical sensing

TL;DR: In this article, the authors reported the synthesis of carbon nanoballs aggregation networks-based aerogels (CNANAs) from the biomass waste of shaddock peels for the first time.
Journal ArticleDOI

MnO2 doped carbon nanosheets prepared from coal tar pitch for advanced asymmetric supercapacitor

TL;DR: In this paper, coal tar pitch was used as a precursor to prepare porous carbon nanosheets (PCN) and then MnO2 was incorporated into porous carbon nano-heets by hydrothermal treatment.
References
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Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity (Recommendations 1984)

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Materials for electrochemical capacitors

TL;DR: This work has shown that combination of pseudo-capacitive nanomaterials, including oxides, nitrides and polymers, with the latest generation of nanostructured lithium electrodes has brought the energy density of electrochemical capacitors closer to that of batteries.
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