Abstract

Electrocatalysis plays a crucial role in the production of renewable clean fuels and carbon reduction. However, the catalytic efficiency of transition metal-based electrocatalysts often falls short due to unfavorable surface structures. To address this challenge, the phase transition technique has emerged as a promising surface structure optimization strategy that can modify the crystal and electronic structure of catalysts, thereby enhancing their electrocatalytic efficiency. This comprehensive review explores the mechanism of phase transition in catalysts and its potential for enhancing electrocatalysis. It provides an in-depth analysis of commonly employed phase transition strategies for transition metal-based materials and discusses the characterization techniques used to observe the phase transition process. The significance of the phase transition strategy in electrocatalysis is elucidated through the lens of key reactions, including the oxygen evolution reaction, hydrogen evolution reaction, and CO2 reduction reaction. Furthermore, the review addresses the challenges associated with implementing phase transition strategies to achieve advanced catalytic performance. By providing valuable insights, this review aims to inspire further research in phase transition modulation, paving the way for the advancement of the catalysts that contribute to sustainable and eco-friendly energy production.

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