Sub‐2 nm IrRuNiMoCo High‐Entropy Alloy with Iridium‐Rich Medium‐Entropy Oxide Shell to Boost Acidic Oxygen Evolution
Shanghai Advanced Research Institute · University of Chinese Academy of Sciences · +1 more institution
Abstract
Abstract Ensuring high catalytic activity and durability at low iridium (Ir)usage is still a big challenge for the development of electrocatalysts toward oxygen evolution reaction (OER) in proton exchange membrane water electrolysis (PEMWE). Here, a rapid liquid‐reduction combined with surface galvanic replacement strategy is reported to synthesize the sub 2 nm high‐entropy alloy (HEA) nanoparticles featured with Ir‐rich IrRuNiMo medium‐entropy oxide shell (Ir‐MEO) and a IrRuCoNiMo HEA core (HEA@Ir‐MEO). Advanced spectroscopies reveal that the Ir‐rich MEO shell inhibits the severe structural evolution of transition metals upon the OER, thus guaranteeing the structural stability. In situ differential…
Citation impact
- FWCI
- 17.81
- Percentile
- 100%
- References
- 46
Authors
8- LYLongping Yao
Shanghai Advanced Research Institute, University of Chinese Academy of Sciences
- FZFengru Zhang
Shanghai Advanced Research Institute, University of Chinese Academy of Sciences
- SYShuai Yang
ShanghaiTech University, Shanghai Advanced Research Institute, University of Chinese Academy of Sciences
- HZHui Zhang
Shanghai Advanced Research Institute, University of Chinese Academy of Sciences
- YLYuze Li
Shanghai Advanced Research Institute, University of Chinese Academy of Sciences
Topics & keywords
- Oxygen evolution
- Materials science
- Iridium
- Catalysis
- Electrochemistry
- Oxide
- Alloy
- Chemical engineering
- Affordable and clean energy