Lattice-distorted Pt wrinkled nanoparticles for highly effective hydrogen electrocatalysis  

作　　者：Xue Li Xiang Han Zhenrui Yang Shun Wang Yun Yang Juan Wang Jiadong Chen Zhongwei Chen Huile Jin 

机构地区：[1]Wenzhou Key Lab of Advanced Energy Storage and Conversion,Zhejiang Province Key Lab of Leather Engineering,College of Chemistry and Materials Engineering,Wenzhou University,Wenzhou 325035,China [2]Institute of New Materials and Industry Technology,College of Chemistry and Materials Engineering,Wenzhou University,Wenzhou 325035,China [3]Department of Chemical Engineering,Waterloo Institute for Nanotechnology,University of Waterloo,Waterloo,Ontario N2L 3G1,Canada

出　　处：《Nano Research》2024年第5期3819-3826,共8页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.U1909213,51872209,52171145,22105146);Zhejiang Provincial Special Support Program for High-level Talents(No.2019R52042).

摘　　要：Modulating Pt surfaces through the introduction of lattice distortion emerges as immensely effective strategy that enhances the kinetics of alkaline hydrogen evolution and oxidation processes.In this study,we fabricated lattice-distorted Pt wrinkled nanoparticles(LD-Pt WNPs)for efficient hydrogen electrocatalysis.The LD-Pt WNPs not only outperform the Pt/C benchmark in hydrogen oxidation reaction,achieving an excellent mass-specific current of 968.5 mA·mg_(Pt)^(-1)(9 times that of Pt/C),but also demonstrate outstanding hydrogen evolution reaction activity with a small overpotential of 58.0 mV.Comprehensive experiments and density functional theory calculations reveal that lattice defects introduce an abundance of unsaturated coordination atoms while modifying the d-band center of Pt.This dual effect optimizes the binding strength of crucial H and OH intermediates,leading to a significant reduction in the energy barrier of the reaction bottleneck,commonly known as the Volmer step.This work unveils a fresh viewpoint on projecting and developing high efficiency electrocatalysts through defect engineering.

关 键 词：DISTORTION NANOPARTICLE hydrogen evolution reaction defect engineering hydrogen oxidation reaction 

分 类 号：O643.3[理学—物理化学]