Journal
SCRIPTA MATERIALIA
Volume 64, Issue 9, Pages 923-926Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2011.01.038
Keywords
Electrochemical capacitor; Nanoporous gold; Double-layer capacitor; Energy storage
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Funding
- Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan
- Grants-in-Aid for Scientific Research [21224009] Funding Source: KAKEN
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We report the capacitive performances of an electrochemical supercapacitor with three-dimensional nanoporous gold (NPG) as both current collectors and electrodes. The bicontinuous NPG with a large internal surface and high conductivity shows promising capacitive properties in both a conventional aqueous electrolyte and a green ionic liquid electrolyte. In comparison with the performance in the aqueous electrolyte, the NPG-based supercapacitor in the ionic liquid electrolyte shows higher energy density because of the high operation voltage arising from the low ionic mobility of the room-temperature ionic liquid. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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