燃料电池铂基核壳结构催化剂性能提升策略

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 dis⁃ cussed，including shell thickness adjustment，morphology control，and strain manipulation.This work would provide guid⁃ ance for the development of highly efficient fuel cell catalysts.