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
Porous Electrode Materials for Lithium‐Ion Batteries – How to Prepare Them and What Makes Them Special
TL;DR: In this paper, a review highlights methods of synthesizing porous electrode materials by templating and template-free methods and discusses how the structural features of porous electrodes influence their electrochemical properties.
Journal ArticleDOI
Carbonaceous electrode materials for supercapacitors.
Long Hao,Xianglong Li,Linjie Zhi +2 more
TL;DR: A new class of carbonaceous materials, porous organic networks (PONs) has been managed into the supercapacitor field, which promises great potential in not only improving the super capacitor performances, but also unraveling the related mechanisms.
Journal ArticleDOI
Bacterial-cellulose-derived carbon nanofiber@MnO₂ and nitrogen-doped carbon nanofiber electrode materials: an asymmetric supercapacitor with high energy and power density.
TL;DR: A new kind of high-performance asymmetric supercapacitor is designed with pyrolyzed bacterial cellulose-coated MnO₂ as a positive electrode material and nitrogen-doped p-BC as a negative electrode material via an easy, efficient, large-scale, and green fabrication approach.
Journal ArticleDOI
The Road for Nanomaterials Industry: A Review of Carbon Nanotube Production, Post‐Treatment, and Bulk Applications for Composites and Energy Storage
TL;DR: In this article, the authors selected carbon nanotubes (CNTs) with sp(2) carbon bonding, excellent mechanical, electrical, thermal, as well as transport properties to demonstrate the road of nanomaterials towards industry.
Journal ArticleDOI
Capacitance of carbon-based electrical double-layer capacitors
Hengxing Ji,Xin Zhao,Zhenhua Qiao,Jeil Jung,Jeil Jung,Yanwu Zhu,Yalin Lu,Lili Zhang,Allan H. MacDonald,Rodney S. Ruoff,Rodney S. Ruoff +10 more
TL;DR: The electrical double-layer capacitance in one to five-layer graphene is measured and it is found that the capacitances are suppressed near neutrality, and are anomalously enhanced for thicknesses below a few layers.
References
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