Activity engineering to transition metal phosphides as bifunctional electrocatalysts for efficient water-splitting. (29th November 2022)

• Record Type: Journal Article
• Authors: Chu, Yuan; Wang, Dan; Shan, Xueling; Liu, Changhai; Wang, Wenchang; Mitsuzaki, Naotoshi; Chen, Zhidong
• Is Part Of: International journal of hydrogen energy. Volume 47:Number 92(2022)
• Page Start: 38983
• Page End: 39000
• Publication Date: 2022-11-29
• Subjects: Transition metal phosphides -- Hydrogen evolution reaction -- Oxygen evolution reaction -- Water-splitting -- Activity engineering; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2022.09.070
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: At present, water splitting has been regarded as one of the most promising ways for hydrogen production. Therefore, exploitation of cost-effective electrocatalysts is essential to realize the industrialization of electrocatalytic techniques. In recent years, transition metal phosphides (TMPs) as non-noble metal electrocatalysts have gained a great deal of attention owing to their multifunctional active sites, tunable structure and composition, as well as unique physicochemical properties. However, the poor electrical conductivity of TMPs and high adsorption energy of hydrogen intermediates during the hydrogen evolution severely restrict its large-scale application. Therefore, it is of great importance to develop effective activity engineering to TMPs. Herein, the reaction mechanisms of water splitting including hydrogen evolution and oxygen evolution reactions and the key performance parameters are briefly clarified. Then, the strategies to improve the performance of TMPs are summarized in four aspects, including modulation of electronic structure, tailoring microstructures, selection of working electrode, and replacing OER with an energy-saving reaction. Finally, a summary and perspective for further opportunities and challenges are highlighted for the TMPs from the point of characterization methodologies, theoretical calculation and practical application. Highlights: A comprehensive overview of activity engineering to TMPs catalysts is summarized. The structure-property correlations of TMPs bifunctional catalysts is elucidated. Challenges and perspectives on TMPs bifunctional catalysts for HER/OER are outlined.