Graphene-nickel nitride hybrids supporting palladium nanoparticles for enhanced ethanol electrooxidation

查看全文 作　　者：Tong [1]Wu;Xiao [1]Wang;Ahmet Emrehan [2]Emre;Jinchen [1,2,3]Fan;Yulin [1,3]Min;Qunjie [1,3]Xu;Shigang [4]Sun

机构地区：[1]Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power,Shanghai Engineering Research Center of Energy-Saving in Heat Exchange Systems,Shanghai University of Electric Power,Shanghai 200090,China;[2]Department of Chemical Engineering and Biointerfaces Institute,University of Michigan,Ann Arbor 48109,MI,United States;[3]Shanghai Institute of Pollution Control and Ecological Security,Shanghai 200092,China;[4]State Key Laboratory of Physical Chemistry of Solid Surfaces,Department of Chemistry,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,Fujian,China

出　　处：《Journal of Energy Chemistry》索引2021年第30卷第4期,共7页

基　　金：funded by the National Natural Science Foundation of China(No.91745112);sponsored by Shanghai Rising-Star Program(No.19QA1404100);Financial support from the Science and Technology Commission of Shanghai Municipality(Nos.19DZ2271100 and 18020500800);the support from the Opening Project of PCOSS,Xiamen University,201910。 摘　　要：Electrocatalysts for ethanol oxidation reaction(EOR)are generally limited by their poor durability because of the catalyst poisoning induced by the reaction intermediate carbon monoxide(CO).Therefore,the rapid oxidation removal of CO intermediates is crucial to the durability of EOR-based catalysts.Herein,in order to effectively avoiding the catalyst CO poisoning and improve the durability,the graphene-nickel nitride hybrids(AG-Ni_(3)N)were designed for supporting palladium nanoparticles(Pd/AG-Ni_(3)N)and then used for ethanol electrooxidation.The density functional theory(DFT)calculations demonstrated the introduction of AG-Ni_(3)N depresses the CO absorption and simultaneously promotes the adsorption of OH species for CO oxidation removal.The fabricated Pd/AG-Ni_(3)N catalyst distinctively exhibits excellent electroactivity with the mass catalytic activity of 3499.5 m A mg^(-1) on EOR in alkaline media,which is around 5.24 times higher than Pd/C(commercial catalyst).Notably,the Pd/AG-Ni_(3)N hybrids display excellent stability and durability after chronoamperometric measurements with a total operation time of 150,000 s. 关键词：GRAPHENE Pd nanoparticles Nickel nitride Ethanol electrooxidation

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Graphene-nickel nitride hybrids supporting palladium nanoparticles for enhanced ethanol electrooxidation

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