Development of a Novel Pt<sub>3</sub>V Alloy Electrocatalyst for Highly Efficient and Durable Industrial Hydrogen Evolution Reaction in Acid Environment
Yumin Da, Rui Jiang, Zhangliu Tian, Ganwen Chen, Yukun Xiao, Jinfeng Zhang, Shibo Xi, Yida Deng, Wei Chen, Xiaopeng Han, Wenbin Hu
Abstract
Abstract Alloying platinum with early transition metals is a promising approach to optimize the adsorption behaviors of catalysts. Nevertheless, the large negative redox potential between early transition metals and Pt hinders the fabrication of such alloys. Herein, a strategy combining the thermal shock technique with electrochemical activation to prepare Pt 3 V alloy as a hydrogen evolution reaction catalyst is reported for the first time. Electrochemical tests show that the as‐prepared catalyst exhibits exceptional catalytic activity and durability in 0.5 m H 2 SO 4 , surpassing the state‐of‐the‐art 20 wt.% Pt/C. The catalyst can maintain its activity after 100 h tests without evident decay under the current density of 500 mA cm −2 . Theoretical calculations demonstrate that the optimized hydrogen absorption and high vacancy formation energy of Pt 3 V contributes to the enhanced electrocatalytic activity and stability. This work may spur future research for other Pt‐based early transition metal alloy catalysts for electrocatalysis.