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Design paradigms for Pt-based electrocatalysts toward acidic oxygen reduction in proton exchange membrane fuel cells
One-line summary
A solar energy research paper on Design paradigms for Pt-based electrocatalysts toward acidic oxygen reduction in proton exchange membrane fuel cells.
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Chinese explanation / 中文解读
中文解读待补充：本站会优先为光伏效率、钙钛矿太阳能电池、储能技术、太阳能热利用、BIPV、并网技术等高价值论文补充中文说明。
Original abstract
The widespread commercialization of proton exchange membrane fuel cells (PEMFCs) relies fundamentally on developing cost-effective, highly active Pt-based cathode electrocatalysts. Beyond conventional intrinsic structural optimization of Pt, current design strategies increasingly emphasize the coupled regulation of active-site composition, catalyst-support interaction, and interfacial microenvironment. While traditional modification strategies predominantly focus on the intrinsic structural optimization of Pt to enhance utilization efficiency, the frontier of electrocatalyst design has evolved. Current paradigms transcend the isolated structural engineering of Pt, emphasizing instead the synergistic interplay within the entire catalytic architecture—specifically the holistic optimization of reaction interfaces, supporting substrates, and integrated active sites. Herein, a comprehensive review of the structure–activity relationships in advanced Pt-based electrocatalysts is presented, with a central focus on their underlying catalytic mechanisms. Representative strategies including strain/ligand regulation, ordered intermetallics, core-shell structures, single-atom catalysts/alloys, high-entropy alloys, light-element doping, support engineering, and surface microenvironment control are systematically discussed. Distinct from conventional reviews that primarily catalog morphological characteristics, this work uniquely delves into the fundamental physicochemical origins governing catalytic efficacy. In addition, the gap between rotating disk electrode evaluation and membrane electrode assembly performance is briefly highlighted to emphasize practical device relevance. By systematically categorizing these advanced structural synergies, this review elucidates the intrinsic reasons behind the effectiveness of state-of-the-art designs, providing critical mechanistic insights and strategic guidelines for the rational construction of next-generation high-performance PEMFC electrocatalysts.
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