Ouyang Jian, Sun Yu, Zhang Yiqiong, Liu Juzhe, Bo Xin, Wang Zenglin
Shenzhen Kohodo Hydrogen Energy Co., Ltd., Shenzhen 518109, China.
Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China.
Molecules. 2024 Dec 29;30(1):84. doi: 10.3390/molecules30010084.
Catalyzing hydrogen evolution reaction (HER) is a key process in high-efficiency proton exchange membrane water electrolysis (PEMWE) devices. To replace the use of Pt-based HER catalyst, tungsten carbide (WC) is one of the most promising non-noble-metal-based catalysts with low cost, replicable catalytic performance, and durability. However, the preparation access to scalable production of WC catalysts is inevitable. Herein, we introduced a facile protocol to achieve the tungsten carbide species by plasma treatment under a CH atmosphere from the WO precursor. Moreover, the heterogeneous structure of the tungsten carbide/tungsten oxide nanosheets further enhances the catalytic activity for HER with the enlarged specific surface area and the synergism on the interfaces. The prepared tungsten carbide/tungsten oxide heterostructure nanosheets (WO-850-P) exhibit exceptional HER catalytic activity and stable longevity in acid electrolytes. This work provides a facile and effective method to construct high-performance and non-precious-metal-based electrocatalysts for industrial-scale water electrolysis.
催化析氢反应（HER）是高效质子交换膜水电解（PEMWE）装置中的关键过程。为了替代基于铂的HER催化剂的使用，碳化钨（WC）是最有前景的非贵金属基催化剂之一，具有低成本、可复制的催化性能和耐久性。然而，实现WC催化剂可扩展生产的制备途径是必不可少的。在此，我们引入了一种简便的方法，通过在CH气氛下对WO前驱体进行等离子体处理来制备碳化钨物种。此外，碳化钨/氧化钨纳米片的异质结构通过增大比表面积和界面上的协同作用进一步提高了HER的催化活性。制备的碳化钨/氧化钨异质结构纳米片（WO-850-P）在酸性电解质中表现出优异的HER催化活性和稳定的寿命。这项工作为构建用于工业规模水电解的高性能非贵金属基电催化剂提供了一种简便有效的方法。
