Iridium‐Free High‐Entropy Alloy for Acidic Water Oxidation at High Current Densities
University of Science and Technology of China · Hefei National Center for Physical Sciences at Nanoscale · +2 more institutions
Abstract
Abstract Designing active and cost‐effective catalysts for acidic oxygen evolution reaction (OER) is critically important for improving proton exchange membrane water electrolyzers (PEMWEs) used in hydrogen production. In this study, we introduce a rapid and straightforward method to synthesize a quinary high‐entropy ruthenium‐based alloy (RuMnFeMoCo) for acidic OER. This iridium‐free catalyst demonstrates a low overpotential of 170 mV and exceptional stability, enduring a 1000‐hour durability test at 10 mA cm −2 in 0.5 M H 2 SO 4 . Microstructural analyses and density functional theory (DFT) calculations reveal that the incorporation of corrosion‐resistant elements such as Ru, Mo, and Co enhances the overall…
Citation impact
- FWCI
- 20.69
- Percentile
- 100%
- References
- 33
Authors
16- JCJinghao Chen
University of Science and Technology of China, Hefei National Center for Physical Sciences at Nanoscale
- JMJiale Ma
University of Science and Technology of China, Sun Yat-sen University, Hefei National Center for Physical Sciences at Nanoscale
- THTao Huang
University of Science and Technology of China, Sun Yat-sen University, Hefei National Center for Physical Sciences at Nanoscale
- QLQichen Liu
University of Science and Technology of China, National Synchrotron Radiation Laboratory
- XLXiaokang Liu
University of Science and Technology of China, National Synchrotron Radiation Laboratory
Topics & keywords
- Overpotential
- Catalysis
- Oxygen evolution
- Water splitting
- Alloy
- Chemical engineering
- Materials science
- Exchange current density
- Affordable and clean energy