Optimizing Pt-Based Alloy Electrocatalysts for Improved Hydrogen Evolution Performance in Alkaline Electrolytes: A Comprehensive Review
Chinese Academy of Sciences · Soochow University · +4 more institutions
Abstract
The splitting of water through electrocatalysis offers a sustainable method for the production of hydrogen. In alkaline electrolytes, the lack of protons forces water dissociation to occur before the hydrogen evolution reaction (HER). While pure Pt is the gold standard electrocatalyst in acidic electrolytes, since the 5d orbital in Pt is nearly fully occupied, when it overlaps with the molecular orbital of water, it generates a Pauli repulsion. As a result, the formation of a Pt-H* bond in an alkaline environment is difficult, which slows the HER and negates the benefits of using a pure Pt catalyst. To overcome this limitation, Pt can be alloyed with transition metals, such as Fe, Co, and Ni. This approach has…
Citation impact
- FWCI
- 13.95
- Percentile
- 100%
- References
- 179
Authors
5- GGGuoliang Gao
Chinese Academy of Sciences, Soochow University, Suzhou Institute of Nano-tech and Nano-bionics
- GZGuang ZhuCorresponding
Soochow University
- XCXueli Chen
Soochow University
- ZSZixu SunCorresponding
Henan University
- ACAndreu CabotCorresponding
Institució Catalana de Recerca i Estudis Avançats, Institut de Recerca en Energia de Catalunya
Topics & keywords
- Electrocatalyst
- Alloy
- Catalysis
- Electrolyte
- Water splitting
- Materials science
- Dissociation (chemistry)
- Transition metal