Ag/C催化剂催化PEMFC中氧还原性能的研究  

Study of Ag/C as ORR catalyst in PEMFCs

作　　者：宋兴娟 张东明[2] SONG Xing-juan;ZHANG Dong-ming(Wuhan Huaxia University of Technology,Wuhan Hubei 430223,China;State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan Hubei 430070,China)

机构地区：[1]武汉华夏理工学院机电工程学院,湖北武汉430223 [2]武汉理工大学材料复合新技术国家重点实验室,湖北武汉430070

出　　处：《电源技术》2018年第3期396-398,共3页Chinese Journal of Power Sources

摘　　要：以酸化处理的XC-72炭黑作为载体,利用化学还原法制备不同Ag载量的Ag/C催化剂。通过XRD、投射电镜(TEM)测试,对Ag-Co/C催化剂的结构和形貌进行分析,并在酸性介质中测试Ag-Co/C的循环伏安和线性扫描曲线。结果表明:30%(质量分数)的Ag/C具有最高的电化学催化活性,Ag/C催化氧气还原时2电子和4电子转移并存。Ag/C catalysts with differential Ag loading were synthesized by chemically reducing silver salts using the acidized XC-72 carbon as the support.The structure and morphology of Ag/C catalysts were analyzed by XRD,SEM and TEM.Ag/C were studied in acid solution by cyclic voltammetry(CV)and linear sweep voltammetry(LSV)tests.The results indicte that acid treatment of XC-72 carbon improves the distribution of Ag nano-particals,30%Ag/C has the highest electrochemical activity,and 2-electrons pathway and 4-electrons pathway happens when oxygen reduction reaction(ORR)appears catalyzed by Ag/C.

关 键 词：Ag/C 酸化处理 氧还原 催化剂 

分 类 号：TM914[电气工程—电力电子与电力传动]