We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Extraordinary Supercapacitor Performance of a Multicomponent and Mixed-Valence Oxyhydroxide.
- Authors
Jianli Kang; Hirata, Akihiko; Luyang Chen; Shengli Zhu; Fujita, Takeshi; Mingwei Chen
- Abstract
We report a novel multicomponent mixed-valence oxyhydroxide-based electrode synthesized by electrochemical polarization of a de-alloyed nanoporous NiCuMn alloy. The multicomponent oxyhydroxide has a high specific capacitance larger than 627 Fcm-3 (1097.95 Fg-1) at a current density of 0.25 Acm-3, originating from multiple redox reactions. More importantly, the oxyhydroxide electrode possesses an extraordinarily wide working-potential window of 1.8V in an aqueous electrolyte, which far exceeds the theoretically stable window of water. The realization of both high specific capacitance and high working-potential windows gives rise to a high energy density, 51 mWhcm-3, of the multicomponent oxyhydroxide-based supercapacitor for high-energy and highpower applications.
- Subjects
SUPERCAPACITORS; ELECTRODES; NANOPOROUS materials; ALLOYS; OXIDATION-reduction reaction; ELECTROCHEMICAL research
- Publication
Angewandte Chemie, 2015, Vol 127, Issue 28, p8218
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201500133