耐久性
电解质
催化作用
化学
电化学
燃料电池
质子交换膜燃料电池
膜
化学工程
电化学能量转换
电极
纳米技术
工艺工程
材料科学
复合材料
工程类
有机化学
生物化学
物理化学
作者
Chi‐Yeong Ahn,Ji Eun Park,Sungjun Kim,Ok-Hee Kim,Wooncheol Hwang,Min Her,Sun Young Kang,Sung-Bin Park,Oh Joong Kwon,Hyun S. Park,Yong‐Hun Cho,Yung‐Eun Sung
出处
期刊:Chemical Reviews
[American Chemical Society]
日期:2021-10-22
卷期号:121 (24): 15075-15140
被引量:110
标识
DOI:10.1021/acs.chemrev.0c01337
摘要
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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