Journal
ACS COMBINATORIAL SCIENCE
Volume 15, Issue 2, Pages 82-89Publisher
AMER CHEMICAL SOC
DOI: 10.1021/co300086h
Keywords
electrocatalysts; PEM; electrolysis; anode; combinatorial; metal oxides
Funding
- Office of Energy Efficiency and Renewable Energy at the U.S. Department of Energy [DE-SC0004192]
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A library of electrocatalysts for water electrolysis under acidic conditions was created by ink jet printing metal oxide precursors followed by pyrolysis in air to produce mixed metal oxides. The compositions were then screened in acidic electrolytes using a pH sensitive fluorescence indicator that became fluorescent due to the pH change at the electrode surface because of the release of protons from water oxidation. The most promising materials were further characterized by measuring polarization curves and Tafel slopes as anodes for water oxidation. Mixed metal oxides that perform better than the iridium oxide standard were identified.
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