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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.

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Citations
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Easy synthesis of a high surface area, hierarchical porous carbon for high-performance supercapacitors

TL;DR: In this article, a hierarchical porous structure of polyvinylidene fluoride (PVDF) and NaOH activation was proposed to achieve high surface area and pore volume.
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A conducting polymer nucleation scheme for efficient solid-state supercapacitors on paper

TL;DR: In this paper, a thin nucleation layer is used to tune the morphology of conducting polymer electrodes and to optimize the performance of paper-based solid-state supercapacitors, achieving a high volumetric capacitance of 327 F cm−3.
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Reactive Template and Confined Self-Activation Strategy: Three-Dimensional Interconnected Hierarchically Porous N/O-Doped Carbon Foam for Enhanced Supercapacitors

TL;DR: In this article, a new reactive template and confined self-activation strategy for the preparation of three-dimensional interconnected hierarchically porous N/O-doped carbon foam (3DHPNCF) is reported.
Journal ArticleDOI

Polybenzoxazine originated N-doped mesoporous carbon ropes as an electrode material for high-performance supercapacitors

TL;DR: In this article, N-doped mesoporous carbon ropes (N-MCRs) derived from polybenzoxazine, a new high-performance thermosetting resin, used as an electrode active material for supercapacitor application.
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Energy Storage in Supercapacitors: Focus on Tannin-Derived Carbon Electrodes

TL;DR: In this article, an outline of the principles of the energy storage mechanism in supercapacitors is presented as a guide to illustrate the research on porous carbons materials for SC applications.
References
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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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