Microstrain-induced modulation of electronic structure and adsorption energy for efficient hydrogen evolution reactionOA
Inducing microstrain at atomic level within multicomponent Pt-based electrocatalysts,as well as the role of this microstrain in modulating the electronic structure and multi-site surface adsorption energies during hydrogen evolution reaction(HER),still remains unexplored.Herein,the localized microstrain had been designed in a novel kind of ultrafine PtMnZn ternary alloy,which were planted into the highly ordered TiO_(2) nanotube array to form the self-supported electrode with highly catalytic activity for splitting water both in acid and alkaline conditions.The obtained selfsupported electrode exhibits a remarkable mass activity of 17.73 A·mg_(Pt)^(−1) in acid and 6.78 A·mg_(Pt)^(−1) in alkaline conditions,outperforming commercial Pt/C 44.32 and 61.64 times,respectively.In addition,the obtained self-electrodes possess superior long-term durability.Theoretical investigations reveal that the modulated electronic structure can shift the d-band center of multi metallic sites,resulting in lowerΔG ^(*)Hof H adsorption on PtMnZn surface,as well as lower energy barrier to dissociate the H_(2)O affording ^(*)H intermediates providing an acid microenvoirnment,which facilitates the H_(2) formation in alkaline conditions.This work induces distinct local microstrain in self-supported electrode,realizing optimized adsorption and enhancing electrochemical performances,which offers a promising strategy for designing novel high-performance self-supported electrode for hydrogen production.
Yukun Chang;Xing Cheng;Guangshun Ran;Hui Song;Wenyuan Zhou;Jinshu Wang;Hongyi Li
State Key Laboratory of Materials Low-Carbon Recycling,College of Material Science and Engineering,Beijing University of Technology,Beijing 100124,ChinaState Key Laboratory of Materials Low-Carbon Recycling,College of Material Science and Engineering,Beijing University of Technology,Beijing 100124,China College of Carbon Neutrality Future Technology,Beijing University of Technology,Beijing 100124,ChinaState Key Laboratory of Materials Low-Carbon Recycling,College of Material Science and Engineering,Beijing University of Technology,Beijing 100124,ChinaState Key Laboratory of Materials Low-Carbon Recycling,College of Material Science and Engineering,Beijing University of Technology,Beijing 100124,ChinaState Key Laboratory of Materials Low-Carbon Recycling,College of Material Science and Engineering,Beijing University of Technology,Beijing 100124,ChinaState Key Laboratory of Materials Low-Carbon Recycling,College of Material Science and Engineering,Beijing University of Technology,Beijing 100124,ChinaState Key Laboratory of Materials Low-Carbon Recycling,College of Material Science and Engineering,Beijing University of Technology,Beijing 100124,China College of Carbon Neutrality Future Technology,Beijing University of Technology,Beijing 100124,China
化学化工
microstrainmodulated the electronic structureoptimized adsorption energiesultrafine ternary alloyselfsupported electrode
《Nano Research》 2026 (2)
P.952-963,12
supported by Beijing Municipal Commission of Education(No.KZ202210005003)Beijing Natural Science Foundation(No.Z210016)the National Key Research and Development Program of China(No.2022YFB3705403)the National Natural Science Foundation of China(No.22302211).
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