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Communication
Fluoride-Modulated Cobalt Catalysts for Electrochemical Oxidation of Water under Non-Alkaline Conditions
Article first published online: 19 AUG 2010
DOI: 10.1002/cssc.201000161
Copyright © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Additional Information
How to Cite
Gerken, J. B., Landis, E. C., Hamers, R. J. and Stahl, S. S. (2010), Fluoride-Modulated Cobalt Catalysts for Electrochemical Oxidation of Water under Non-Alkaline Conditions. ChemSusChem, 3: 1176–1179. doi: 10.1002/cssc.201000161
Publication History
- Issue published online: 20 OCT 2010
- Article first published online: 19 AUG 2010
- Manuscript Received: 8 JUN 2010
Funded by
- NSF. Grant Numbers: CHE-0802907, DMR-0706559 - RJH
- DOE-Basic Energy Sciences. Grant Number: DE-SC0002160 - RJH
Keywords:
- cobalt;
- electrochemistry;
- heterogeneous catalysis;
- oxidation;
- water splitting
The acid test: Electrochemical oxidation of CoII salts in aqueous solution in the presence of fluoride (pH 3.5) results in formation of an heterogeneous cobalt oxide deposit on the electrode that serves as an electrocatalyst for water oxidation under mildly acidic conditions. Further studies reveal that fluoride is an effective proton acceptor for the oxygen-evolving reaction and lacks the inhibitory properties evident with other buffering electrolytes, such as inorganic phosphate.