Journal
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
Volume 114, Issue -, Pages 29-41Publisher
JOURNAL MATER SCI TECHNOL
DOI: 10.1016/j.jmst.2021.10.031
Keywords
DMFC; Dual-role; Pt-support; co-catalyst; Catalyst; co-catalyst; MOR; ORR
Funding
- National Natural Science Foundation of China [52076152, 21773171]
- Natural Science Foundation of Shanghai [20ZR1461000]
- Fundamental Research Funds for the Central Universities
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One fundamental challenge in exploiting DMFCs is the preparation of inexpensive, high active electrocatalysts. There are mainly two types of dual-role electrocatalysts for MOR & ORR: Pt-support/co-catalyst (P-S/C) and catalyst/co-catalyst (C/C).
One fundamental challenge in exploiting direct methanol fuel cells (DMFCs) is the preparation of inexpensive, 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 electrocatalysts 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 capitalize 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. (c) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
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