Study on preparation of NiOOH by a new catalytic electrolysis method
- College of Science, Beijing University of Chemical Technology, 15 BeiSanhuan East Road, ChaoYang, Beijing 100029 (China)
The present paper reports a new catalytic electrolysis method to prepare NiOOH. KMnO{sub 4} is proposed as a catalyst to play the role of electron-transfer medium in the electrolysis preparation of NiOOH for the first time. Through the self-redox reaction of KMnO{sub 4}, the highly efficient electron-transfer process between the electrolyte and the electrode of the spherical Ni(OH){sub 2} is realized, thus resulting in a high electrolytic efficiency and short electrolysis time. The mechanism of catalytic electrolysis is preliminarily discussed. The experimental results show that the electrode prepared with the NiOOH powders by catalytic electrolysis offers a discharge capacity of 267 mAh g{sup -1} at a current density of 120 mA g{sup -1} and exhibits good cycling performance.
- OSTI ID:
- 21199749
- Journal Information:
- Materials Research Bulletin, Vol. 44, Issue 4; Other Information: DOI: 10.1016/j.materresbull.2008.09.016; PII: S0025-5408(08)00324-3; Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
Similar Records
Determination of the “NiOOH” charge and discharge mechanisms at ideal activity
Contribution of electrolyte in nanoscale electrolysis of pure and buffered water by particulate photocatalysis