物理化学学报 >> 2026, Vol. 42 >> Issue (5): 100206.doi: 10.1016/j.actphy.2025.100206

所属专题: 二次电池先进正极材料

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钠离子电池正极材料中离子迁移与电子转移的协同优化

王双1, 傅小奇2,*(), 姚山山1,*()   

  1. 1 江苏大学材料科学与工程学院, 江苏 镇江 212013
    2 江苏大学化学化工学院, 江苏 镇江 212013
  • 收稿日期:2025-08-11 修回日期:2025-09-21 录用日期:2025-10-21 发布日期:2026-01-23
  • 通讯作者: Email: xfu@ujs.edu.cn (傅小奇)yaosshan@hotmail.com (姚山山)

Synergistic optimization of ion migration and electron transfer in sodium-ion battery cathode materials

Shuang Wang1, Xiaoqi Fu2,*(), Shanshan Yao1,*()   

  1. 1 School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, China
    2 School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, China
  • Received:2025-08-11 Revised:2025-09-21 Accepted:2025-10-21 Published:2026-01-23
  • Contact: Email: xfu@ujs.edu.cn (Xiaoqi Fu)yaosshan@hotmail.com (Shanshan Yao)

摘要:

钠离子电池(SIBs)凭借钠资源丰富、成本低廉及环境友好等优势,在大规模储能系统中展现出巨大应用潜力。正极材料的离子迁移与电子转移速率是决定电池倍率性能、循环寿命及容量保持率的关键因素,二者的协同提升对突破性能瓶颈至关重要。本文以钠离子电池三大主流正极材料——层状过渡金属氧化物(LTMOs)、聚阴离子化合物(PACs)和普鲁士蓝类似物(PBAs)为研究对象,系统梳理了不同材料体系中离子迁移通道与电子转移路径的结构基础,深入解析了二者的协同调控机制。结合最新研究成果,从元素优化、结构设计与复合改性三个维度,阐释了协同提升离子通道通畅性与电子通路连续性的具体路径与作用机理,提炼出高性能SIBs正极材料的普适性设计策略,为进一步开发兼具高容量、高倍率性能与稳定的SIBs正极材料提供了有益参考。

关键词: 正极材料, 协同调控, 元素优化, 结构设计, 复合改性

Abstract:

Sodium-ion batteries (SIBs) have demonstrated enormous application potential in large-scale energy storage systems due to their abundant sodium resources, low cost, and environmental friendliness. The ion migration rate and electron transfer efficiency of cathode materials are key factors determining the rate performance, cycle life, and capacity retention rate of batteries, and synergistic improvement of both is essential to overcoming performance bottlenecks. This paper takes the three mainstream cathode materials of sodium-ion batteries as its research objects, including layered transition metal oxides (LTMOs), polyanionic compounds (PACs), and Prussian blue analogues (PBAs). It systematically reviews the structural basis of ion migration channels and electron transfer pathways in different material systems and thoroughly analyzes their synergistic regulatory mechanisms. Combining the latest research findings, this paper explains, from three dimensions of elemental optimization, structural design, and composite modification, the specific pathways and mechanisms for synergistically enhancing the efficiency of ion channels and the continuity of electronic pathways. It distills universal strategies for designing high-performance SIBs cathode materials, providing a valuable reference for further developing SIBs cathode materials that combine high capacity, exceptional rate performance, and robust stability.

Key words: Cathode materials, Synergistic regulation, Elemental optimization, Structural design, Composite modification