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Abstract As the demand for sustainable energy solutions grows, developing efficient energy conversion and storage technologies, such as fuel cells and metal-air batteries, is vital. Oxygen Reduction Reaction (ORR) is a significant limitation in electrochemical systems due to its slower kinetics. Although Pt-based catalysts are commonly used to address this challenge, their high cost and suboptimal performance remain significant obstacles to further development. This review offers a comprehensive overview of advanced support materials aimed at improving the efficiency, durability, and cost-effectiveness of Pt-based catalysts. By examining a range of materials, including mesoporous carbon, graphene, carbon nanotubes, and metal oxides, the review clarifies the relationship between the structural properties of these supports and their influence on ORR performance. Additionally, it discusses the fundamental characteristics of these materials, their practical applications in fuel cells, and explores potential solutions and future directions for optimizing Pt-based catalysts to advance sustainable energy conversion technologies. Future research could focus on nano-engineering and composite material development to unlock the full potential of Pt-based catalysts, significantly enhancing their economic viability and performance in energy applications.
Zhan et al. (Wed,) studied this question.
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