Direct methanol fuel cells system-A review of dual-role electrocatalysts for oxygen reduction and methanol oxidation  

作　　者：Yuanhui Zuo Wenchao Sheng Wenquan Tao Zhuo Li 

机构地区：[1]College of Environment Science and Engineering,Tongji University,Shanghai 200092,China

出　　处：《Journal of Materials Science & Technology》2022年第19期29-41,共13页材料科学技术（英文版）

基　　金：supported by the National Natural Science Foun-dation of China(Nos.52076152 and 21773171);the Natural Science Foundation of Shanghai(No.20ZR1461000);the Fundamental Research Funds for the Central Universities offer help to support the project.

摘　　要：One fundamental challenge in exploiting direct methanol fuel cells(DMFCs)is the preparation of inex-pensive,high active electrocatalysts,which are highly active and durable for the two half-reactions,i.e.,the methanol oxidation reaction(MOR)at the anode and the oxygen reduction reaction(ORR)at the cathode.Platinum group metals-based catalysts have been known the governing dual-functional electro-catalysts based on the literature reports.But these catalysts are expensive and commercialize the DMFC less attractive.In addition to the high-cost,there are also methanol crossover,CO poisoning,long-term instability,and other problems as for Pt-based spurs.For the dual-role MOR&ORR catalysts,methanol crossover is inevitable to a certain extent on the current development of DMFC with losses in terms of cell voltage.In this regard,one strategy is to exploit high selective anodic/cathodic electrocatalysts to cap-italize the energy density at a high concentration of methanol.According to the summary results,there are mainly two types of dual-role electrocatalysts:one is Pt-support/co-catalyst(designated as P-S/C)for MOR/ORR,the other is catalyst/co-catalyst(designated as C/C)for MOR/ORR.This paper aims to review the design and construction of the various dual-role catalysts and give some discussion briefly.

关 键 词：DMFC Dual-role Pt-support/co-catalyst Catalyst/co-catalyst MOR/ORR 

分 类 号：TM911.4[电气工程—电力电子与电力传动] O643.36[理学—物理化学]