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- Title
RuO 2 @IrO 2 /C Core-Shell Structure Catalyst for Efficient and Durable Acidic Oxygen Evolution.
- Authors
Teng, Xin; Gao, Junan; Yang, Zuobo; Liang, Xin; Wu, Xiaokuan; Yun, Jimmy; Zhang, Jie
- Abstract
Proton exchange membrane (PEM) water electrolysis for hydrogen production has a high current density and overall efficiency, and is a very promising hydrogen production strategy. However, its application is limited by the high anodic overpotential for oxygen evolution and the instability of catalysts. Therefore, anodic catalysts with a high activity and durability under acidic conditions need further research. Herein, we first synthesized the key intermediate Ru@Ir core-shell structures by controlling nanocrystals, then loaded them onto a carbon support and calcined to obtain a RuO2@IrO2/C core-shell nanocatalyst with a size smaller than 5 nm, whose activity exceeded that of commercial RuO2 and commercial IrO2. After a 200 h stability test, the catalyst did not show significant performance degradation or structural degeneration. Finally, the prepared catalyst was assembled into a PEM electrolyzer showing the same results as the three-electrode tests, demonstrating its potential for practical applications and providing new insights for designing nanocatalysts suitable for industrialized PEM water electrolysis to produce hydrogen
- Subjects
CATALYST structure; HYDROGEN production; OXYGEN; NANOCRYSTALS; NANOPARTICLES; WATER electrolysis; CATALYSTS
- Publication
Catalysts (2073-4344), 2023, Vol 13, Issue 12, p1456
- ISSN
2073-4344
- Publication type
Article
- DOI
10.3390/catal13121456