典型文献
Acid-Stable CoWO4/WO3-Microrod Coated by a Thin Carbon-Layer as Efficient Pt Co-Catalysts for Methanol Oxidation and Oxygen Reduction
文献摘要：
Insufficient activity and instability(poisoning)of Pt-based electrocata-lysts for methanol oxidation and oxygen reduction reactions(MOR/ORR)impede the development of direct methanol fuel cells.Here,CoWO4 nanoparticles-loaded WO3 microrods coated by a thin carbon-layer are used as Pt-supports/co-catallysts for MOR/ORR.WO3 grows along the(110)crystal plane to form microrod(diameter of-0.6 um),which is coated by a carbon-layer(-5 nm).Pt-CoWO4/WO3@NCL-mr(850℃)shows a higher mass activity(2208 mA mg-1pt)than the commercial Pt/C(659.4 mAmg-1pt).CoWO4/WO3 heterojunction on the microrod surface with abundant oxygen vacancies allows the generation of surface-adsorbed hydroxyl to facilitate CO elimination and regeneration of the occupied Pt active-sites(promising stability).Pt-CoWO4/WO3@NCL-mr(850℃)has higher half-wave(0.46 V)and onset(0.54 V)potentials than Pt/C(0.41 and 0.50 V)for ORR.The microrod structure of CoWO4/WO3@NCL facilitates the dispersibility of Pt NPs to increase the utilization of Pt active sites and relieve the self-aggregation of Pt to obtain a promising synergy between Pt and CoWO4(Co2+)for ORR in acid media.This study provides insights not only into the synthesis of acid-resistant WO3@NCL microrod as active Pt co-catalyst,but also into the effective utilization of surface oxygen vacancies and Co2+for MOR/ORR.
文献关键词：
中图分类号：
作者姓名：
Jiahuan Li;Jiahao Xie;Xinyu Wang;Ying Dai;Xiaoqin Xu;Jin Liu;Zhuang Cai;Xin Meng;Jinlong Zou
作者机构：
Key Laboratory of Functional Inorganic Material Chemistry,Ministry of Education of the People's Republic of China,School of Chemistry and Materials Science,Heilongjiang University,Harbin 150080,China;School of Civil Engineering,Heilongjiang Institute of Technology,Harbin 150050,China
文献出处：
引用格式：
[1]Jiahuan Li;Jiahao Xie;Xinyu Wang;Ying Dai;Xiaoqin Xu;Jin Liu;Zhuang Cai;Xin Meng;Jinlong Zou-.Acid-Stable CoWO4/WO3-Microrod Coated by a Thin Carbon-Layer as Efficient Pt Co-Catalysts for Methanol Oxidation and Oxygen Reduction)[J].结构化学,2022(07):59-67
A类：
Microrod,catallysts,microrod,1pt,mAmg,Co2+for
B类：
Acid,Stable,CoWO4,WO3,Coated,by,Thin,Carbon,Layer,Efficient,Pt,Catalysts,Methanol,Oxidation,Oxygen,Reduction,Insufficient,activity,instability,poisoning,electrocata,methanol,oxidation,oxygen,reduction,reactions,MOR,ORR,impede,development,direct,fuel,cells,Here,nanoparticles,loaded,microrods,coated,thin,carbon,layer,are,used,supports,grows,along,crystal,plane,form,diameter,um,which,NCL,mr,shows,higher,mass,commercial,heterojunction,surface,abundant,vacancies,allows,adsorbed,hydroxyl,elimination,regeneration,occupied,active,sites,promising,has,half,wave,onset,potentials,structure,facilitates,dispersibility,NPs,increase,utilization,relieve,self,aggregation,obtain,synergy,between,acid,media,This,study,provides,insights,not,only,into,synthesis,resistant,catalyst,but,also,effective
AB值：
0.491995
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