期刊
CATALYSTS
卷 12, 期 1, 页码 -出版社
MDPI
DOI: 10.3390/catal12010102
关键词
oxygen evolution reaction; water electrolysis; island-type; transition metal oxide
资金
- Ministry of Science and Technology of Taiwan [MOST 110-3116-F-011-004]
- National Taiwan University of Science and Technology-Tokyo Institute of Technology Joint Research Program
This study presents a rapid and efficient method to produce hybrid catalysts for water electrolysis using microwave-assisted hydrothermal synthesis. The catalysts with a unique structure can prevent cracking of the catalytic layer, ensuring long-term efficiency in water electrolysis.
A rapid, productive, and efficient process was invented to produce hybrid catalysts for transition metal oxide water electrolysis. The microwave-assisted hydrothermal method was applied to synthesize transition metal oxide catalysts by controlling the amount of cobalt and iron. This work solves the cracking problem for the catalytic layer during the water electrolysis. It uses Fe2O3 as the support and covers a catalytic layer outside it and a nanoscale gap between each catalyst, which can help to remove the gas and fill up the water. The unique structure of the catalysts can prevent them from accumulating gas and increasing their efficiency for long-term water electrolysis. By using unique catalysts in the water electrolyzer, the current density reaches higher than 200 mA cm(-2) at 2.0 V and does not show a significant decay even after 200 h.
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