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.read more
Citations
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Journal ArticleDOI
Hierarchical porous carbon microtubes derived from willow catkins for supercapacitor applications
Lijing Xie,Guohua Sun,Fangyuan Su,Guo Xiaoqian,Qingqiang Kong,Xiao-Ming Li,Huang Xianhong,Liu Wan,Wen Song,Kaixi Li,Chunxiang Lv,Cheng-Meng Chen +11 more
TL;DR: In this paper, a hierarchical porous carbon microtubes (denoted as HPNCTs) have been successfully prepared by a facile carbonization and subsequent KOH activation process, with the resulting materials inherited the natural tubular morphology of willow catkins, but also developed hierarchical porous structure by activation, with nitrogen from the biomass being self-doped in the resulting carbon.
Journal ArticleDOI
Materials Design and System Construction for Conventional and New-Concept Supercapacitors
TL;DR: This review provides a comprehensive summary of recent progress on electrode materials design and burgeoning devices constructions for high‐performance supercapacitors.
Journal ArticleDOI
One-step preparation of single-crystalline Fe2O3 particles/graphene composite hydrogels as high performance anode materials for supercapacitors
TL;DR: In this paper, single-crystalline Fe 2 O 3 nanoparticles directly grown on graphene hydrogels are investigated as high performance anode materials for supercapacitors.
Journal ArticleDOI
Structural evolution of 2D microporous covalent triazine-based framework toward the study of high-performance supercapacitors.
Long Hao,Jing Ning,Bin Luo,Bin Wang,Yunbo Zhang,Zhihong Tang,Junhe Yang,Arne Thomas,Linjie Zhi +8 more
TL;DR: The experimental results reveal that the nitrogen doping can enhance the supercapacitor performance mainly through affecting the relative permittivity of the electrode materials.
Journal ArticleDOI
Encapsulating MWNTs into hollow porous carbon nanotubes: a tube-in-tube carbon nanostructure for high-performance lithium-sulfur batteries.
TL;DR: A tube-in-tube carbon nanostructure with multi-walled carbon nanotubes confined within hollow porous carbon Nanotubes is synthesized for Li-S batteries to enhance the electrical conductivity, hamper the dissolution of lithium polysulfide, and provide large pore volume for sulfur impregnation.
References
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Journal ArticleDOI
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.