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Differences in the Electrochemical Performance of Pt-Based Catalysts Used for Polymer Electrolyte Membrane Fuel Cells in Liquid Half- and Full-Cells

Authors
Ahn, Chi-YeongPark, Ji EunKim, SungjunKim, Ok-HeeHwang, WonchanHer, MinKang, Sun YoungPark, SungBinKwon, Oh JoongPark, Hyun S.Cho, Yong-HunSung, Yung-Eun
Issue Date
22-12월-2021
Publisher
American Chemical Society (ACS)
Citation
Chemical Reviews, v.121, no.24, pp 15075 - 15140
Pages
66
Journal Title
Chemical Reviews
Volume
121
Number
24
Start Page
15075
End Page
15140
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/1921
DOI
10.1021/acs.chemrev.0c01337
ISSN
0009-2665
1520-6890
Abstract
A substantial amount of research effort has been directed toward the development of Pt-based catalysts with higher performance and durability than conventional polycrystalline Pt nanoparticles to achieve high-power and innovative energy conversion systems. Currently, attention has been paid toward expanding the electrochemically active surface area (ECSA) of catalysts and increase their intrinsic activity in the oxygen reduction reaction (ORR). However, despite innumerable efforts having been carried out to explore this possibility, most of these achievements have focused on the rotating disk electrode (RDE) in half-cells, and relatively few results have been adaptable to membrane electrode assemblies (MEAs) in full-cells, which is the actual operating condition of fuel cells. Thus, it is uncertain whether these advanced catalysts can be used as a substitute in practical fuel cell applications, and an improvement in the catalytic performance in real-life fuel cells is still necessary. Therefore, from a more practical and industrial point of view, the goal of this review is to compare the ORR catalyst performance and durability in half- and full-cells, providing a differentiated approach to the durability concerns in half- and full-cells, and share new perspectives for strategic designs used to induce additional performance in full-cell devices.
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Ahn, Chi Yeong
친환경해양개발연구본부 (친환경연료추진연구센터)
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