Copper Delafossite Anode for Water Electrolysis

The design of highly active anode for water electrolysis is a critical issue. Here we report on copper delafossite oxide (ABO2; A = Cu) as a novel anode for the oxygen evolution reaction (OER). Among the copper delafossites we synthesized, copper rhodium delafossite (CuRhO2) showed the excellent cyc...

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Bibliographic Details
Published inECS transactions Vol. 58; no. 2; pp. 27 - 31
Main Authors Hinogami, Reiko, Toyoda, Kenji, Aizawa, Masato, Kawasaki, Takashi, Gyoten, Hisaaki
Format Journal Article
LanguageEnglish
Published The Electrochemical Society, Inc 31.08.2013
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Summary:The design of highly active anode for water electrolysis is a critical issue. Here we report on copper delafossite oxide (ABO2; A = Cu) as a novel anode for the oxygen evolution reaction (OER). Among the copper delafossites we synthesized, copper rhodium delafossite (CuRhO2) showed the excellent cyclic voltammogram characteristic for OER in 1 M KOH (aq), comparable to that of Co3O4. We also confirmed that the eg orbital occupancy at the B site of delafossites, calculated from the bulk structure, had a good accordance with the catalytic activity of those materials. The CV characteristics of Cu delafossites were more accurately explained by considering the electronic conductivity.
ISSN:1938-5862
1938-6737
DOI:10.1149/05802.0027ecst