Electrolyte-Dependent Electrosynthesis and Activity of Cobalt-Based Water Oxidation Catalysts
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- 30 January 2009
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 131 (7) , 2615-2620
- https://doi.org/10.1021/ja807769r
Abstract
Electrolysis of Co2+ in phosphate, methylphosphonate, and borate electrolytes effects the electrodeposition of an amorphous highly active water oxidation catalyst as a thin film on an inert anode. Electrodeposition of a catalytically competent species immediately follows oxidation of Co2+ to Co3+ in solution. Methylphosphonate and borate electrolytes support catalyst activity comparable to that observed for phosphate. Catalytic activity for O2 generation in aqueous solutions containing 0.5 M NaCl is retained for catalysts grown from phosphate electrolyte.Keywords
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