Cu_(core)Pt_(shell)/C纳米催化剂电催化氧还原性能  

Performance of Oxygen Electrocatalytic Reduction on Cu_(core)Pt_(shell)/C Nanocatalyst

作　　者：梅艳[1] 乐栋贤[1] 刘世斌[2] 

机构地区：[1]乐山职业技术学院,四川乐山614000 [2]太原理工大学,山西太原030024

出　　处：《广州化工》2017年第13期54-56,共3页GuangZhou Chemical Industry

基　　金：乐山市科技局市级课题(15GZD132);乐山职业技术学院院级课题资助项目(9KY2014034)

摘　　要：通过控制前驱体材料的比例分别为1∶1、1∶0.5、1∶2,采用两步化学还原法合成了不同壳层厚度的Cu_(core)Pt_(shell)纳米粒子。使用XRD表征纳米粒子的结构和组成,动电位扫描法测试其对氧还原反应的活性和抗甲醇性能。结果显示:所制备的材料为核壳结构,Pt壳层平均厚度约5.5 nm;Cu_(core)Pt_(shell)/C催化剂的氧还原活性随着Pt元素比例的增加而增加,都小于Pt/C催化剂,但其抗甲醇性能优于Pt/C催化剂。The CucorePtshell nanoparticles with different Pt shell thickness were prepared by two-step chemical reduction method by controlling the ratio of precursor to 1∶1,1∶0.5,1∶2 and characterized by XRD techniques.The catalytic activity of oxygen reduction reaction（ORR） and methanol-resistance of nanoparticles were tested by the potentiodynamic method.The results showed the fabricated material was core-shell structure,the average shell thickness was about 5.5 nm.The ORR activity of CucorePtshell/C catalyst increased with the increase of Pt proportion,which was less than Pt/C catalyst.But its methanol-resistance was better than Pt/C catalyst.

关 键 词：电催化 氧还原 核-壳结构 抗甲醇性 

分 类 号：TQ152[化学工程—电化学工业]