Electrodeposition of catalytically active nickel for the oxygen evolution reaction — effects of anionic composition
作者:
H. J. Miao,
D. L. Piron,
期刊:
The Canadian Journal of Chemical Engineering
(WILEY Available online 1993)
卷期:
Volume 71,
issue 4
页码: 564-569
ISSN:0008-4034
年代: 1993
DOI:10.1002/cjce.5450710409
出版商: Wiley Subscription Services, Inc., A Wiley Company
关键词: nickel electrode;oxygen evolution;reaction electrodeposition;electrocatalysis
数据来源: WILEY
摘要:
AbstractNickel electrodes were prepared by electrodeposition in electrolytes of various anionic compositions. The deposition conditions and bath types were evaluated with special emphasis on the electrocatalytic properties for the oxygen evolution reaction (OER). Electrochemical characterizations in a 5 mol/L KOH solution at 25°C showed that the electrode deposited from the chloride bath, having a low Tafel slope of 50 mV/dec and an overpotential of 396 mV at 100 mA/cm2, is the most catalytically active among electrodes prepared in electrolytes of various anionic compositions. The electrode activity for the OER is related to the real surface areas, which depend on the anion compositions in the deposition bath and the deposition conditions
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