| DOI码： | 10.1038/s41467-023-36380-9 |
| 发表刊物： | nature communication |
| 摘要： | The poor stability of Ru-based acidic oxygen evolution (OER) electrocatalysts has greatly hampered their application in polymer electrolyte membrane electrolyzers (PEMWEs). Traditional understanding of performance degradation centered on influence of bias fails in describing the stability trend, calling for deep dive into the essential origin of inactivation. Here we uncover the decisive role of reaction route (including catalytic mechanism and intermediates binding strength) on operational stability of Ru-based catalysts. Using MRuOx (M=Ce4+, Sn4+, Ru4+, Cr4+) solid solution as structure model, we findthe reactionroute,thereby stability, can be customizedbycontrolling the Ru charge. The screened SnRuO x thus exhibits orders of magnitude lifespan extension. A scalable PEMWE single cell using SnRuO x anode conveys an ever smallest degradation rate of 53 μV h−1 during a 1300h operation at 1A cm−2. |
| 论文类型： | 期刊论文 |
| 通讯作者： | 葛君杰 |
| 卷号： | 14 |
| 页面范围： | 843 |
| 是否译文： | 否 |
| 发表时间： | 2023-01-26 |
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