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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Journal ArticleDOI
Phosphorous and nitrogen dual heteroatom doped mesoporous carbon synthesized via microwave method for supercapacitor application
Udaya B. Nasini,Venu Gopal Bairi,Sunil Kumar Ramasahayam,Shawn E. Bourdo,Tito Viswanathan,Ali U. Shaikh +5 more
TL;DR: In this article, the microwave assisted synthesis of doped mesoporous carbon can provide a novel method of synthesizing materials useful for the fabrication of cheap and high performance supercapacitors.
Journal ArticleDOI
Fabrication of a 3D MnO2/graphene hydrogel for high-performance asymmetric supercapacitors
TL;DR: In this paper, a three-dimensional hydrogel of reduced graphene oxide and MnO2 nanoparticles has been prepared by a two-step synthesis, and the asymmetric supercapacitor exhibited a high performance with an energy density of 21.2 W h kg−1 and a power density of 0.82 kWkg−1, and it can be cycled reversibly in a wide potential window of 1.6 V (0-1.6V).
Journal ArticleDOI
One-step strategy to graphene/Ni(OH)2 composite hydrogels as advanced three-dimensional supercapacitor electrode materials
TL;DR: In this paper, a facile one-step strategy was proposed to prepare mechanically strong and electrically conductive graphene/Ni(OH)2 composite hydrogels with an interconnected porous network.
Journal ArticleDOI
Rational Design of Self-Supported Ni3S2 Nanosheets Array for Advanced Asymmetric Supercapacitor with a Superior Energy Density
TL;DR: The resulting Ni3S2 nanosheet array demonstrated superior supercapacitance properties, with a very high capacitance of about 1,000 F g-1 being delivered at a high current density for 20,000 charge-discharge cycles, unparalleled by other reported nickel sulfide-basedsupercapacitors.
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Biomass-derived porous graphitic carbon materials for energy and environmental applications
Qiang Chen,Xiaofei Tan,Yunguo Liu,Shaobo Liu,Meifang Li,Yanling Gu,Peng Zhang,Shujing Ye,Zhongzhu Yang,Yuanyuan Yang +9 more
TL;DR: In this paper, a review of the principal synthesis methodologies of BPGC is presented, and three electrochemical energy storage and conversion systems that utilize BPGCs are intensively investigated, including supercapacitors (SCs), lithium-ion batteries (LIBs), and fuel cells (FCs).
References
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