燃料电池铂基核壳结构催化剂性能提升策略

doi:10.19964/j.issn.1006-4990.2022-0236

摘要/Abstract

摘要：

开发高活性、长寿命的铂纳米催化剂是能源催化领域中一项迫在眉睫的研究任务。核壳型铂催化剂能提高铂原子的利用率，为实现上述目标提供了重要途径。核壳型铂催化剂的催化活性对晶格应变高度敏感，稳定性则与核壳界面作用紧密相关。然而，铂晶格应变的精准调控方法极度缺乏，导致其催化活性难以通过晶格应变实现最优化；而现有的核壳界面构建方式难以在铂原子利用率最大化的情况下实现催化剂的优异稳定性。发展高效的应变调控方法及核壳强界面作用是实现核壳型铂纳米催化剂实际应用的关键。围绕厚度调节、形貌控制、应变调控3个方面阐述了核壳结构铂基催化剂性能的提升策略，为高效燃料电池催化剂的开发提供指导。

关键词: 燃料电池, 核壳结构, 铂, 电催化, 活性, 稳定性

Abstract:

The development of highly active and long life Pt-based nanocatalysts is an urgent research task in the field of energy catalysis.Core-shell structured Pt catalysts can improve the utilization rate of Pt atom，which provides an effective route to achieve the above goal.The catalytic activity of Pt-based core-shell nanocatalysts is highly sensitive to the lattice strain，while the stability is closely related to the interaction of the core-shell interface.However，it is extremely difficult to manipulate the lattice strain of Pt shells in a controllable manner，making it difficult to optimize the catalytic activity through manipulating lattice strain.The existing approaches for preparing Pt-based core-shell nanocatalysts are difficult to accomplish good stability of the catalysts while maximizing the utilization of Pt metal.Approaches that can tune strains in a systematic way and construct strong interactions between core and Pt shell are the key to realize the practical application of Pt-based core-shell nanocatalysts.The strategy for improving the performance of Pt-based core-shell nanocatalysts was discussed，including shell thickness adjustment，morphology control，and strain manipulation.This work would provide guidance for the development of highly efficient fuel cell catalysts.

Key words: fuel cell, core-shell structure, platinum, electrocatalysis, activity, stability

中图分类号:

TQ150.1

郑杨子,金明尚. 燃料电池铂基核壳结构催化剂性能提升策略[J]. 无机盐工业, 2022, 54(11): 1-7.

ZHENG Yangzi,JIN Mingshang. Strategy to improve catalytic performance of Pt-based core-shell catalysts for fuel cells[J]. Inorganic Chemicals Industry, 2022, 54(11): 1-7.

图/表 3

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