Metal-free aqueous redox capacitor via proton rocking-chair system in an organic-based couple.
Metal-free aqueous redox capacitor via proton rocking-chair system in an organic-based couple.
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DOI:
10.1038/srep03591
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发表时间:
2014-01-07
影响因子:
4.6
通讯作者:
Honma, Itaru
中科院分区:
文献类型:
--
作者:
Tomai, Takaaki;Mitani, Satoshi;Komatsu, Daiki;Kawaguchi, Yuji;Honma, Itaru
Safe and inexpensive energy storage devices with long cycle lifetimes and high power and energy densities are mandatory for the development of electrical power grids that connect with renewable energy sources. In this study, we demonstrated metal-free aqueous redox capacitors using couples comprising low-molecular-weight organic compounds. In addition to the electric double layer formation, proton insertion/extraction reactions between a couple consisting of inexpensive quinones/hydroquinones contributed to the energy storage. This energy storage mechanism, in which protons are shuttled back and forth between two electrodes upon charge and discharge, can be regarded as a proton rocking-chair system. The fabricated capacitor showed a large capacity (>20 Wh/kg), even in the applied potential range between 0–1 V, and high power capability (>5 A/g). The support of the organic compounds in nanoporous carbon facilitated the efficient use of the organic compounds with a lifetime of thousands of cycles.
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影响因子:
4.6
作者:
Hanyu Y;Honma I
通讯作者:
Honma I
影响因子:
3.9
作者:
CONWAY, BE
通讯作者:
CONWAY, BE
影响因子:
6.6
作者:
Kötz, R;Carlen, M
通讯作者:
Carlen, M
影响因子:
3.3
作者:
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通讯作者:
Frackowiak, Elzbieta
影响因子:
64.8
作者:
Armand, M.;Tarascon, J. -M.
通讯作者:
Tarascon, J. -M.