Metallic Ru─Ru Interaction in Ruthenium Oxide Enabling Durable Proton Exchange Membrane Water Electrolysis
Zhejiang University · University of Science and Technology of China · +3 more institutions
Abstract
Abstract Developing efficient and robust electrocatalysts toward the oxygen evolution reaction (OER) is critical for proton exchange membrane water electrolysis (PEMWE). RuO 2 possesses intrinsically high OER activity, but the concurrent electrochemical dissolution leads to rapid deactivation. Here a unique RuO 2 catalyst containing metallic Ru─Ru interactions (m‐RuO 2 ) is reported, which maintains stability in practical PEMWE for 100 h at 60 °C and 1 A cm −2 . Experimental and theoretical investigations suggest that the presence of Ru─Ru interactions significantly increases the energy barrier for the formation of RuO 2 (OH) 2 , which is a key intermediate for Ru dissolution, and hence substantially mitigates…
Citation impact
- FWCI
- 11.00
- Percentile
- 100%
- References
- 55
Authors
9- GZGuoqiang Zhao
Zhejiang University
- WGWei Guo
Zhejiang University
- MSMinmin Shan
University of Science and Technology of China, Hefei National Center for Physical Sciences at Nanoscale
- YFYanyan Fang
University of Science and Technology of China, Hefei National Center for Physical Sciences at Nanoscale
- GWGongming Wang
University of Science and Technology of China, Hefei National Center for Physical Sciences at Nanoscale
Topics & keywords
- Ruthenium
- Materials science
- Ruthenium oxide
- Electrolysis
- Electrolysis of water
- Oxide
- Metal
- Inorganic chemistry