直接乙醇燃料电池阴极催化剂的开发及其性能研究  

Development and Performance of Cathode Catalyst for Direct Ethanol Fuel Cell

作　　者：顾兴佳 柴弘伟 冯婷 付晓宇[1,2] 仵菲 黄如玉 王芳 Gu Xingjia;Chai Hongwei;Feng Ting;Fu Xiaoyu;Wu Fei;Huang Ruyu;Wang Fang(Engineering Laboratory of Chemical Resources Utilization in South Xinjiang,Xinjiang Production &Construction Corps.Alar, Xinjiang 843300;College of Life Sciences, Tarim University, Alar, Xinjiang 843300)

机构地区：[1]新疆兵团南疆化工资源利用工程实验室,新疆阿拉尔843300 [2]塔里木大学生命科学学院,新疆阿拉尔843300

出　　处：《塔里木大学学报》2019年第3期50-56,共7页Journal of Tarim University

基　　金：大学生创新创业计划项目“直接乙醇燃料电池阴极催化剂的开发及其性能研究”(2017005);中央高校业务经费项目“基于天然蛭石的三维自支撑硅基高性能锂离子电池负极材料的研究”(ZZ1703)

摘　　要：以多壁碳纳米管(MWCNT)为载体,FeCl3·6H2O、CoCl2·6H2O为前驱体制备三种不同催化剂Fe3O4@MWCNT、Co3O4@MW-CNT、CoFe2O4@MWCNT。采用X-射线衍射(XRD)、扫描电镜(SEM)、BET等手段对制备的催化剂进行表征。以商品化Pt/C为参照,对各催化剂的电催化活性及稳定性进行测试,结果表明:CoFe2O4@MWCNT在通入氧气、50mV/s的扫描速度下循环伏安曲线中出现了明显的还原峰;在扫描速度为10mV/s、转速为1600rpm的LSV曲线中催化剂CoFe2O4@MWCNT具有较高电流密度-5mA·cm^-2,在催化ORR反应过程中近似为4e-体系。因此制备的CoFe2O4@MWCNT催化剂具有优异的电催化性能及稳定性,并且为新型阴极催化剂的开发奠定了基础。Three different catalysts, Fe 3 O 4 @MWCNT、Co 3 O 4 @MWCNT、CoFe 2 O 4 @MWCNT were prepared using multi-walled carbon nanotubes (MWCNT) as carriers and FeCl 3 ·6H 2 O and CoCl 2 ·6H 2 O as precursor. The catalysts were characterized by X- ray diffraction (XRD), scanning electron microscopy (SEM) and BET. With commercial Pt/C as reference, the electrocatalytic activity and stability of the catalysts were tested, The results showed that the CoFe 2 O 4 @MWCNT has obvious reduction peak in cyclic voltammetry curves at 50 mV/sand oxygen condition. The CoFe 2 O 4 @MWCNT had a high current density of -5 mA·cm ^-2 in the LSV curve with a scanning speed of 10 mV/s , 1 600 rpm and is approximately 4e-system in the ORR reaction. Therefore, the prepared CoFe 2 O 4 @MWCNT catalyst has excellent electrocatalytic performance and sability, and lays a foundation for the development of new cathode catalysts.

关 键 词：碳纳米管 PT/C 阴极催化剂 CoFe2O4@MWCNT 

分 类 号：O643.36[理学—物理化学]