电化学2023，Vol.29Issue(2)：42-50,9.
层状金属氢氧化物中铁位点辅助分散铂纳米颗粒用于高效甲醇氧化
Highly Dispersed Pt Nanoparticles Root in Single-Atom Fe Sites in LDHs toward Efficient Methanol Oxidation
摘要
Abstract
Active and durable electrocatalysts for methanol oxidation reaction are of critical importance to the commercial viability of direct methanol fuel cell,which has already attracted growing popularities.However,current methanol oxidation electrocatalysts fall far short of expectations and suffer from excessive use of noble metal,mediocre activity,and rapid decay.Here we report the Pt anchored on NiFe-LDHs surface hybrid for stable methanol oxidation in alkaline media.Based on the high intrinsic methanol oxidation activity of Pt nanoparticles,the substrates NiFe-LDHs further enhanced anti-poisoning ability and maintained unaffected stability after 200,000 s cycle test compared to commercial Pt/C catalyst.The use of NiFe-LDHs is believed to play the decisive role to evenly disperse Pt nano-particles on their surface using single atomic dispersed Fe as anchoring sites,making full use of abundant OH groups and subsequent facilitating the oxidative removal of carbonaceous poison on neighboring Pt sites.This work high-lights the specialty of NiFe-LDHs in improving the overall efficiency of methanol oxidation reaction.关键词
层状金属氢氧化物/甲醇氧化/单原子/Pt电催化剂Key words
Layered double hydroxides/Methanol oxidation/Single-atom/Pt electrocatalysts引用本文复制引用
孟庆成,金林薄,马梦泽,高学庆,陈爱兵,周道金,孙晓明..层状金属氢氧化物中铁位点辅助分散铂纳米颗粒用于高效甲醇氧化[J].电化学,2023,29(2):42-50,9.基金项目
This work was financially supported by the Na-tional Natural Science Foundation of China(21935001,22175012,22005022),the S&T Program of Hebei(21344601D),the Beijing Natural Science Foundation(2214062),the Program for Changjiang Scholars and Innovation Research Team in the University(No.IRT1205),the Fundamental Research Funds for the Central Universities,and Beijing Advanced Innovation Center for Soft Matter Science and Engineering is acknowledged as well. （21935001,22175012,22005022）
