典型文献
Tuning electrochemical transformation process of zeolitic imidazolate framework for efficient water oxidation activity
文献摘要：
Metal-organic frameworks (MOFs) have been widely studied as efficient electrocatalysts for water oxida-tion due to their tunable structure and easy preparation.However,the rational design of MOFs-based electrocatalysts and fundamental understanding of their structural evolution during oxygen evolution reaction (OER) remain critical challenges.Here,we report a facile approach to tune the structural trans-formation process of the Co-based zeolitic imidazolate framework (ZIF) during the OER process by using water molecules as a vacancy promoter.The modified ZIF catalyst accelerates the structural transforma-tion from MOF precursor to electrochemical active species and simultaneously enhances the vacancy density during the electrochemical activation process.The optimized electrocatalyst exhibits an extre-mely low overpotential 175 mV to deliver 10 mAcm-2 and superior durability (100 h) at 100 mA cm-2.The comprehensive characterization results reveal the structural transformation from the initial tetrahedral Co sites to cobalt oxyhydroxide (CoOOH) and the formation process of oxygen vacancies (CoOOH-VO) at a high anodic potential.These findings represent a promising way to achieve highly active MOF-based electrocatalysts for water oxidation.
文献关键词：
中图分类号：
作者姓名：
Zhanwu Lei;Xu Jin;Jianming Li;Yang Liu;Jian Liu;Shuhong Jiao;Ruiguo Cao
作者机构：
Hefei National Laboratory for Physical Science at Microscale,Department of Materials Science and Engineering,University of Science and Technology of China,Hefei 230026,Anhui,China;Research Center of New Energy,Research Institute of Petroleum Exploration and Development (RIPED),PetroChina,Beijing 100083,China;School of Engineering,Faculty of Applied Science,University of British Columbia,Kelowna,BC V1V1V7,Canada
文献出处：
引用格式：
[1]Zhanwu Lei;Xu Jin;Jianming Li;Yang Liu;Jian Liu;Shuhong Jiao;Ruiguo Cao-.Tuning electrochemical transformation process of zeolitic imidazolate framework for efficient water oxidation activity)[J].能源化学,2022(02):505-513
A类：
extre,mely,oxyhydroxide
B类：
Tuning,electrochemical,transformation,process,zeolitic,imidazolate,efficient,water,oxidation,activity,Metal,organic,frameworks,MOFs,have,been,widely,studied,electrocatalysts,due,their,tunable,structure,easy,preparation,However,rational,design,fundamental,understanding,structural,evolution,during,oxygen,reaction,OER,remain,critical,challenges,Here,report,facile,approach,tune,ZIF,by,using,molecules,vacancy,promoter,modified,accelerates,from,precursor,active,species,simultaneously,enhances,density,activation,optimized,exhibits,low,overpotential,mV,deliver,mAcm,superior,durability,comprehensive,characterization,results,reveal,initial,tetrahedral,sites,cobalt,CoOOH,vacancies,VO,anodic,These,findings,represent,promising,way,achieve,highly
AB值：
0.543111
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