文献类型：期刊文献

中文题名：Active sites engineering of Pt/CNT oxygen reduction catalysts by atomic layer deposition

作者：Jie Gan[1];Jiankang Zhang[2];Baiyan Zhang[2];Wenyao Chen[1];Dongfang Niu[1];Yong Qin[2];Xuezhi Duan[1];Xinggui Zhou[1]

机构：[1]State Key Laboratory of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China;[2]State Key Laboratory of Coal Conversion,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001,Shanxi,China

年份：2020

卷号：29

期号：6

起止页码：59

中文期刊名：Journal of Energy Chemistry

外文期刊名：能源化学（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2019_2020】；

基金：financially supported by the Natural Science Foundation of China(21922803 and 21776077);the Shanghai Natural Science Foundation(17ZR1407300 and 17ZR1407500);the Program for the Professor of Special Appointment(Eastern Scholar)at Shanghai Institutions of Higher Learning;the Shanghai Rising-Star Program(17QA1401200);the State Key Laboratory of Organic-Inorganic Composites(oic-201801007);the Open Project of State Key Laboratory of Chemical Engineering(SKLChe-15C03)。

语种：英文

中文关键词：Oxygen;reduction;Pt/CNT;catalyst;Atomic;layer;deposition;Active;sites

摘要：Understanding carbon-supported Pt-catalyzed oxygen reduction reaction(ORR)from the perspective of the active sites is of fundamental and practical importance.In this study,three differently sized carbon nanotube-supported Pt nanoparticles(Pt/CNT)are prepared by both atomic layer deposition(ALD)and impregnation methods.The performances of the catalysts toward the ORR in acidic media are comparatively studied to probe the effects of the sizes of the Pt nanoparticles together with their distributions,electronic properties,and local environments.The ALD-Pt/CNT catalysts show much higher ORR activity and selectivity than the impregnation-Pt/CNT catalysts.This outstanding ORR performance is ascribed to the well-controlled Pt particle sizes and distributions,desirable Pt^04f binding energy,and the Cl-free Pt surfaces based on the electrocatalytic measurements,catalyst characterizations,and model calculations.The insights reported here could guide the rational design and fine-tuning of carbon-supported Pt catalysts for the ORR.