Premium
Fluoride‐Modulated Cobalt Catalysts for Electrochemical Oxidation of Water under Non‐Alkaline Conditions
Author(s) -
Gerken James B.,
Landis Elizabeth C.,
Hamers Robert J.,
Stahl Shan S.
Publication year - 2010
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201000161
Subject(s) - electrocatalyst , fluoride , electrochemistry , chemistry , cobalt , inorganic chemistry , catalysis , cobalt oxide , aqueous solution , oxide , oxygen evolution , electrolyte , phosphate , electrode , organic chemistry
The acid test: Electrochemical oxidation of Co II 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.