Advanced Bismuth-Based Anode Materials for Efficient Potassium Storage:Structural Features,Storage Mechanisms and Modification Strategies  

作　　者：Yiye Tan Fanglan Mo Hongyan Li 

机构地区：[1]Department of Materials Science and Engineering,College of Chemistry and Materials Science,Jinan University,Guangzhou 510632,People’s Republic of China

出　　处：《Nano-Micro Letters》2025年第6期1-39,共39页纳微快报(英文版)

基　　金：supported by the National Natural Science Foundation of China(22209057);the Guangzhou Basic and Applied Basic Research Foundation(2024A04J0839).

摘　　要：Potassium-ion batteries(PIBs)are considered as a promising energy storage system owing to its abundant potassium resources.As an important part of the battery composition,anode materials play a vital role in the future development of PIBs.Bismuth-based anode materials demonstrate great potential for storing potassium ions(K^(+))due to their layered structure,high theoretical capacity based on the alloying reaction mechanism,and safe operating voltage.However,the large radius of K^(+)inevitably induces severe volume expansion in depotassiation/potassiation,and the sluggish kinetics of K^(+)insertion/extraction limits its further development.Herein,we summarize the strategies used to improve the potassium storage properties of various types of materials and introduce recent advances in the design and fabrication of favorable structural features of bismuth-based materials.Firstly,this review analyzes the structure,working mechanism and advantages and disadvantages of various types of materials for potassium storage.Then,based on this,the manuscript focuses on summarizing modification strategies including structural and morphological design,compositing with other materials,and electrolyte optimization,and elucidating the advantages of various modifications in enhancing the potassium storage performance.Finally,we outline the current challenges of bismuth-based materials in PIBs and put forward some prospects to be verified.

关 键 词：Bismuth-based materials Potassium-ion batteries ANODE Potassium storage mechanism Modification strategies 

分 类 号：TG1[金属学及工艺—金属学]