储能科学与技术2024，Vol.13Issue(5)：1474-1486,13.DOI:10.19799/j.cnki.2095-4239.2023.0895
普鲁士蓝类钠离子电池正极材料导电性研究进展
Research progress on the conductivity of Prussian blue sodium-ion battery cathode materials
赵毅伟 1张福华 1颜顺 1丁坤 1蓝海枫 1刘辉1
作者信息
摘要
Abstract
The development of sodium-ion batteries with fast charge performance(ultra-high rate performance)is a research hotspot in the field of energy storage.Prussian blue analogues(PBAs),which have an open three-dimensional skeleton structure conducive to sodium-ion storage and diffusion,have great potential as anode materials for sodium-ion batteries.However,most existing PBAs have structural defects,crystal water,and poor electronic conductivity,resulting in unsatisfactory rate performance.In this study,the problem of poor electrical conductivity of PBAs is analyzed from two perspectives:ionic and electronic conduction.First,the influence of structural defects in PBAs,the presence of crystal water on ionic conduction,and the influence of the valence bond structure on electronic conduction are analyzed.Recent literature on improving the electrical conductivity of PBAs is also reviewed.①Improving the crystal structure reduces the internal defects and crystal water of PBAs,thereby reducing the migration distance of sodium ions and obstacles.②The design of special PBA crystal structures can effectively reduce the sodium-ion transport path.③Composite conductive materials can build new electronic transport routes.In addition,three strategies to improve the conductivity of PBAs are described.Based on our analysis,to optimize the structure of PBAs and achieve optimal rate performance,composite conductive materials should be strengthened to enhance ionic and electronic conductance.关键词
钠离子电池/普鲁士蓝类似物/倍率性能/结构优化Key words
sodium ion battery/Prussian blue analogs/rate capability/structure optimization分类
信息技术与安全科学引用本文复制引用
赵毅伟,张福华,颜顺,丁坤,蓝海枫,刘辉..普鲁士蓝类钠离子电池正极材料导电性研究进展[J].储能科学与技术,2024,13(5):1474-1486,13.
