RuO<sub>2</sub>@IrO<sub>2</sub>/C Core-Shell Structure Catalyst for Efficient and Durable Acidic Oxygen Evolution
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 catalyst...
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MDPI AG
2023-11-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/13/12/1456 |
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| author | Xin Teng Junan Gao Zuobo Yang Xin Liang Xiaokuan Wu Jimmy Yun Jie Zhang |
| author_facet | Xin Teng Junan Gao Zuobo Yang Xin Liang Xiaokuan Wu Jimmy Yun Jie Zhang |
| author_sort | Xin Teng |
| collection | DOAJ |
| description | 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 RuO<sub>2</sub>@IrO<sub>2</sub>/C core-shell nanocatalyst with a size smaller than 5 nm, whose activity exceeded that of commercial RuO<sub>2</sub> and commercial IrO<sub>2</sub>. 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 |
| first_indexed | 2024-03-08T20:55:01Z |
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| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-08T20:55:01Z |
| publishDate | 2023-11-01 |
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| spelling | doaj.art-bbbdb4728bd74228b1b7695a0adbc4302023-12-22T13:59:20ZengMDPI AGCatalysts2073-43442023-11-011312145610.3390/catal13121456RuO<sub>2</sub>@IrO<sub>2</sub>/C Core-Shell Structure Catalyst for Efficient and Durable Acidic Oxygen EvolutionXin Teng0Junan Gao1Zuobo Yang2Xin Liang3Xiaokuan Wu4Jimmy Yun5Jie Zhang6State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, ChinaState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, ChinaState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, ChinaState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, ChinaState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, ChinaQingdao Chuangqi New Energy Catalysis Technology Co., Ltd., Qingdao 266041, ChinaState Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, ChinaProton 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 RuO<sub>2</sub>@IrO<sub>2</sub>/C core-shell nanocatalyst with a size smaller than 5 nm, whose activity exceeded that of commercial RuO<sub>2</sub> and commercial IrO<sub>2</sub>. 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 hydrogenhttps://www.mdpi.com/2073-4344/13/12/1456PEMOERcore-shellstructureIrO<sub>2</sub>@RuO<sub>2</sub>/C |
| spellingShingle | Xin Teng Junan Gao Zuobo Yang Xin Liang Xiaokuan Wu Jimmy Yun Jie Zhang RuO<sub>2</sub>@IrO<sub>2</sub>/C Core-Shell Structure Catalyst for Efficient and Durable Acidic Oxygen Evolution Catalysts PEM OER core-shell structure IrO<sub>2</sub>@RuO<sub>2</sub>/C |
| title | RuO<sub>2</sub>@IrO<sub>2</sub>/C Core-Shell Structure Catalyst for Efficient and Durable Acidic Oxygen Evolution |
| title_full | RuO<sub>2</sub>@IrO<sub>2</sub>/C Core-Shell Structure Catalyst for Efficient and Durable Acidic Oxygen Evolution |
| title_fullStr | RuO<sub>2</sub>@IrO<sub>2</sub>/C Core-Shell Structure Catalyst for Efficient and Durable Acidic Oxygen Evolution |
| title_full_unstemmed | RuO<sub>2</sub>@IrO<sub>2</sub>/C Core-Shell Structure Catalyst for Efficient and Durable Acidic Oxygen Evolution |
| title_short | RuO<sub>2</sub>@IrO<sub>2</sub>/C Core-Shell Structure Catalyst for Efficient and Durable Acidic Oxygen Evolution |
| title_sort | ruo sub 2 sub iro sub 2 sub c core shell structure catalyst for efficient and durable acidic oxygen evolution |
| topic | PEM OER core-shell structure IrO<sub>2</sub>@RuO<sub>2</sub>/C |
| url | https://www.mdpi.com/2073-4344/13/12/1456 |
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