Fe基双金属氧还原电催化剂活性研究  

Research on Fe-Mbimetal oxygen reduction electrocatalyst activity

作　　者：宋盛 张晓明[1] 王素力[1] 孙公权[1] SONG Sheng;ZHANG Xiao-ming;WANG Su-li;SUN Gong-quan(Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian Liaoning 116023,China;University of ChineseAcademy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院大连化学物理研究所,辽宁大连116023 [2]中国科学院大学,北京100049

出　　处：《电源技术》2020年第12期1752-1754,1795,共4页Chinese Journal of Power Sources

基　　金：国家自然科学基金(21503228);中国科学院战略性先导科技专项变革性洁净能源关键技术与示范(XDA21000000)。

摘　　要：采用共掺杂方法制备Fe-M(M=Co,Ni,Cu)双金属有机骨架,并进一步热解获得(Fe,M)-NC双金属掺杂碳氮氧还原电催化剂。X射线衍射仪(XRD)、拉曼光谱仪(Raman)线性扫描伏安法等测试结果表明,热解温度与热解时长会显著影响电催化剂性能,950℃热解3 h制得的(Fe,Cu)-NC电催化剂氧还原活性最高,在酸性和碱性条件下均优于Fe-NC和其它两种(Fe,M)-NC电催化剂,且碱性条件下稳定性优于Pt/C。In this paper,Fe-M(M=Fe,Co,Ni,Cu)bimetallic organic framework was prepared by co-doping method,and further pyrolysis would generate(Fe,M)-NC oxygen reduction reaction(ORR)electrocatalyst.XRD,Raman,linear scanning voltammetry and other test results show that pyrolysis temperature and time can significantly affect the performance of electrocatalysts.The(Fe,Cu)-NC electrocatalyst prepared by pyrolysis at 950℃for 3 h holds the highest ORR activity,which is superior to Fe-NC and other(Fe,M)-NC electrocatalysts under both acidic and alkaline conditions.Furthermore,the stability of(Fe,Cu)-NC is better than Pt/C under alkaline conditions.

关 键 词：燃料电池 氧还原反应 双金属掺杂 铁氮碳 

分 类 号：TM911.4[电气工程—电力电子与电力传动]