首页|Pt-based intermetallic compound catalysts for the oxygen reduction reaction:From problems to recent developments

Pt-based intermetallic compound catalysts for the oxygen reduction reaction:From problems to recent developments

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Proton exchange membrane fuel cells(PEMFCs)are promising next-generation energy conversion devices with advantages including high energy conversion efficiency,low noise,and environmental friendliness.On the PEMFC cathode,the oxygen reduction reaction(ORR)relies heavily on Pt-based catalysts,where PtMx(M stands for transition metal)intermetallic compounds(IMCs)are considered the best choice to enhance the cat-alytic activity.However,problems such as inadequate catalytic activity,high cost,and insufficient durability,etc.still hamper its commercialization.The optimizations of the catalyst structure,the improvements in the preparation process,and the understanding of the reaction mechanism are of great value.The developments of cathodic oxygen reduction catalysts for PEMFCs will also focus on improving the catalytic activity of inter-metallic compound nanoparticles,the utilization rate,and the durability of Pt.Controlling the particle size and particle/carrier interaction remain key issues for future research.The catalyst reaction mechanism,the surface changes of the nanoparticles of Pt(111)face before and after the catalytic reaction,and the targeted regulation of the adsorption strength between the IMCs and oxygen-containing intermediates adjusted by transition met-als need to be investigated more specifically and directly.At the application level,the expression of catalyst properties in the catalyst membrane electrode and reactor are the keys to the performance of PEMFCs.Therefore,researches on PEMFCs are still systematic works.This paper summarized the recent process toward the optimization of catalyst preparation,the exploration of new catalysts,and the new understanding of the mechanism.Given the reference to the development of PEMFCs,future research can start from the existing problems,solve the shortcomings of the catalyst,and promote the practical application of PEMFCs.

Oxygen reduction reactionPlatinumPEMFCsIntermetallic compound

Heyuan Tian、Xian Wang、Jiawei Ge、Hao Wan、Wei Ma、Guanqun Xie、Junjie Ge

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School of Environment and Civil Engineering,Dongguan University of Technology,Dongguan 523808,Guangdong,China

School of Chemistry and Materials Science,Key Laboratory of Precision and Intelligent Chemistry,University of Science and Technology of China,Hefei 230026,Anhui,China

State Grid Anhui Electric Power Research Institute,Hefei 230601,Anhui,China

2024

能源化学
中国科学院大连化学物理研究所 中国科学院成都有机化学研究所

能源化学

CSTPCDEI
影响因子:0.654
ISSN:2095-4956
年,卷(期):2024.99(12)