典型文献
Structural transformation of metal-organic framework with constructed tetravalent nickel sites for efficient water oxidation
文献摘要：
A mixture of Ni and Fe oxides is among the most commonly active catalysts for the oxygen evolution reaction(OER)during the water oxidation process.In particular,Ni oxide incorporated with even a small amount of Fe leads to substantively enhanced OER activity.However,the critical role of Fe species during the electrocatalytic process is still under evaluation.Herein,we report nickel(oxy)hydroxide incorpo-rated with Fe through the surface reconstruction of a bimetallic metal-organic framework(NiFe-MOF)during the water oxidation process.The spectroscopic investigations with theoretical calculations reveal the critical role of Fe in promoting the formation of highly oxidized Ni4+,which directly correlates with an enhanced OER activity.Both the geometric and electronic structures of the as-reconstructed Ni1-xFexOOH electrocatalysts can be delicately tuned by the Ni-Fe ratio of the bimetallic NiFe-MOF,further affecting the catalytic activity.As a result,the Ni1-xFexOOH derived from Nio.9Feo.1-MOF delivers low overpoten-tials of 260 mV at 10 mA cm-2 and 400 mV at 300 mA cm-2.
文献关键词：
中图分类号：
作者姓名：
Weijian Wu;Zhen Gao;Qun Li;Zhiya Wang;Shiyin Liu;Hongbo Wu;Yuanchun Zhao;Yalong Jiao;Xiaojia Zhao
作者机构：
Hebei Key Laboratory of Inorganic Nano-materials,College of Chemistry and Materials Science,Hebei Normal University,Shijiazhuang 050024,Hebei,China;Hebei Key Laboratory of Photophysics Research and Application,College of Physics,Hebei Normal University,Shijiazhuang 050024,Hebei,China;State Key Laboratory of Metastable Materials Science and Technology,Yanshan University,Qinhuangdao 066004,Hebei,China
文献出处：
引用格式：
[1]Weijian Wu;Zhen Gao;Qun Li;Zhiya Wang;Shiyin Liu;Hongbo Wu;Yuanchun Zhao;Yalong Jiao;Xiaojia Zhao-.Structural transformation of metal-organic framework with constructed tetravalent nickel sites for efficient water oxidation)[J].能源化学,2022(11):404-411
A类：
substantively,xFexOOH,9Feo,overpoten
B类：
Structural,transformation,organic,framework,tetravalent,nickel,sites,efficient,water,oxidation,mixture,oxides,is,among,most,commonly,active,oxygen,evolution,reaction,OER,during,process,In,particular,incorporated,even,small,amount,leads,enhanced,activity,However,critical,role,species,electrocatalytic,still,under,evaluation,Herein,report,hydroxide,through,surface,reconstruction,bimetallic,NiFe,MOF,spectroscopic,investigations,theoretical,calculations,reveal,promoting,highly,oxidized,Ni4+,which,directly,correlates,Both,geometric,electronic,structures,as,reconstructed,Ni1,electrocatalysts,can,be,delicately,tuned,by,ratio,further,affecting,result,derived,from,Nio,delivers,low,tials,mV,mA
AB值：
0.544355
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