Journal ArticleDOI
Carbon-based materials as supercapacitor electrodes
Lili Zhang,Xiu Song Zhao +1 more
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TLDR
This tutorial review provides a brief summary of recent research progress on carbon-based electrode materials forsupercapacitors, as well as the importance of electrolytes in the development of supercapacitor technology.Abstract:
This tutorial review provides a brief summary of recent research progress on carbon-based electrode materials for supercapacitors, as well as the importance of electrolytes in the development of supercapacitor technology. The basic principles of supercapacitors, the characteristics and performances of various nanostructured carbon-based electrode materials are discussed. Aqueous and non-aqueous electrolyte solutions used in supercapacitors are compared. The trend on future development of high-power and high-energy supercapacitors is analyzed.read more
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A review of electrode materials for electrochemical supercapacitors
TL;DR: Two important future research directions are indicated and summarized, based on results published in the literature: the development of composite and nanostructured ES materials to overcome the major challenge posed by the low energy density.
Journal ArticleDOI
Carbon-based Supercapacitors Produced by Activation of Graphene
Yanwu Zhu,Shanthi Murali,Meryl D. Stoller,K. J. Ganesh,Weiwei Cai,Paulo J. Ferreira,Adam Pirkle,Robert M. Wallace,Katie A. Cychosz,Matthias Thommes,Dong Su,Eric A. Stach,Rodney S. Ruoff +12 more
TL;DR: This work synthesized a porous carbon with a Brunauer-Emmett-Teller surface area, a high electrical conductivity, and a low oxygen and hydrogen content that has high values of gravimetric capacitance and energy density with organic and ionic liquid electrolytes.
Journal ArticleDOI
Pseudocapacitive oxide materials for high-rate electrochemical energy storage
TL;DR: In this article, the pseudocapacitance properties of transition metal oxides have been investigated and a review of the most relevant pseudo-capacitive materials in aqueous and non-aqueous electrolytes is presented.
Journal ArticleDOI
Recent Advances in Ultrathin Two-Dimensional Nanomaterials
Chaoliang Tan,Xiehong Cao,Xiehong Cao,Xue-Jun Wu,Qiyuan He,Jian Yang,Xiao Zhang,Junze Chen,Wei Zhao,Shikui Han,Gwang-Hyeon Nam,Melinda Sindoro,Hua Zhang +12 more
TL;DR: The unique advances on ultrathin 2D nanomaterials are introduced, followed by the description of their composition and crystal structures, and the assortments of their synthetic methods are summarized.
Journal ArticleDOI
Laser Scribing of High-Performance and Flexible Graphene-Based Electrochemical Capacitors
TL;DR: It is shown that graphite oxide sheets can be converted by infrared laser irradiation into porous graphene sheets that are flexible, robust, and highly conductive, and hold promise for high-power, flexible electronics.
References
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Surface functional groups of carbons and the effects of their chemical character, density and accessibility to ions on electrochemical performance
TL;DR: In this article, wood origin activated carbon was oxidized and then treated with melamine and urea followed by carbonization at 950 degrees C in an inert atmosphere, and the modified carbons revealed significantly enhanced capacitances in 1 M H2SO4 reaching 300 F/g and the capacitance retention ratio is 86% at the current load of 1 A/g.
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A High-Performance Carbon for Supercapacitors Obtained by Carbonization of a Seaweed Biopolymer
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Capacitance limits of high surface area activated carbons for double layer capacitors
TL;DR: In this paper, the authors suggest that the limitation of C g can be attributed to a space constriction for charge accommodation inside the pore walls, and that the use of extremely high surface area carbons for EDLCs may be unprofitable.
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Fast and Reversible Surface Redox Reaction in Nanocrystalline Vanadium Nitride Supercapacitors
TL;DR: In this paper, a new class of supercapacitors based on nanocrystalline vanadium nitride is reported, which can deliver an impressive specific capacitance of 1340 F g when tested at a scan rate of 2 mV s.
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Growth of manganese oxide nanoflowers on vertically-aligned carbon nanotube arrays for high-rate electrochemical capacitive energy storage.
TL;DR: This binder-free manganese oxide/CNTA electrode presents excellent rate capability, high capacitance, and long cycle life, with strong promise for high-rate electrochemical capacitive energy storage applications.