Catalysis of the Oxygen-Evolution Reaction in 1.0 M Sulfuric Acid by Manganese Antimonate Films Synthesized via Chemical Vapor Deposition
Source abstract
Abstract
High Resolution Image Download MS PowerPoint Slide Manganese antimonate (Mn y Sb 1– y O x ) electrocatalysts for the oxygen-evolution reaction (OER) were synthesized via chemical vapor deposition. Mn-rich rutile Mn 0.63 Sb 0.37 O x catalysts on fluorine-doped tin oxide (FTO) supports drove the OER for 168 h (7 days) at 10 mA cm –2 with a time-averaged overpotential of 687 ± 9 mV and with >97% Faradaic efficiency. Time-dependent anolyte composition analysis revealed the steady dissolution of Mn and Sb. Extended durability analysis confirmed that Mn-rich Mn y Sb 1– y O x materials are more active but dissolve at a faster rate than previously reported Sb-rich Mn y Sb 1– y O x alloys.
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Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Advancements in Solid Oxide Fuel Cells · Fuel Cells and Related Materials
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Affiliations
Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
Division of Chemistry and Chemical Engineering and Beckman Institute, California Institute of Technology, Pasadena, California 91125, United States
Division of Engineering and Applied Sciences, California Institute of Technology, Pasadena, California 91125, United States
Funding
Basic Energy Sciences
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