储能科学与技术 ›› 2025, Vol. 14 ›› Issue (5): 1884-1899.doi: 10.19799/j.cnki.2095-4239.2024.1069

• 储能材料与器件 • 上一篇    下一篇

补钠技术在钠离子电池中的应用进展

唐从庆(), 蔡京升()   

  1. 常熟理工学院材料工程学院,江苏 苏州 215000
  • 收稿日期:2024-11-14 修回日期:2025-01-26 出版日期:2025-05-28 发布日期:2025-05-21
  • 通讯作者: 蔡京升 E-mail:3566831284@qq.com;jscai@cslg.edu.cn
  • 作者简介:唐从庆(2004—),女,本科,研究新能源电池,E-mail:3566831284@qq.com
  • 基金资助:
    江苏省科技厅自然科学基金(BK20230713);江苏省教育厅高校自然科学基金(23KJB430001)

Recent advances in presodiation strategies for sodium-ion batteries

Congqing TANG(), Jingsheng CAI()   

  1. School of Materials Engineering, Changshu Institute of Technology, Suzhou 215000, Jiangsu, China
  • Received:2024-11-14 Revised:2025-01-26 Online:2025-05-28 Published:2025-05-21
  • Contact: Jingsheng CAI E-mail:3566831284@qq.com;jscai@cslg.edu.cn

摘要:

钠离子电池是继锂离子电池之后有望大规模推广的新型储能电池,然而,较低的库仑效率限制了其发展,而预钠化被认为是一种可以有效提升钠电池低首效短板的技术,对钠离子电池商业化推广生产具有重要意义。本文详细总结了国内外预钠化技术的研究进展,从三个角度(包括正极,电解液和负极)的设计和改性来讲述预钠化技术。其中正极处补钠主要包括直接浸渍法、牺牲添加剂法和电化学处理法等;电解液优化主要包含钠盐与溶剂种类优化、钠盐与溶剂的配比优化、添加剂的应用;负极处补钠主要通过直接补钠法、电化学预钠法、硬碳改性、补钠剂等方法。本文通过综述当前补钠技术的进展,总结各自优缺点与商用推广可行性,以期为钠电领域补钠技术的发展提供指导。

关键词: 预钠化, 钠离子电池, 添加剂, 首次库仑效率

Abstract:

Sodium-ion batteries are emerging as one of the most promising energy storage systems beyond lithium-ion batteries, holding great potential for widespread adoption. However, their development is hindered by a low initial Coulombic efficiency (ICE). Sodium supplementation is recognized as an effective strategy to address this issue, playing a critical role in advancing the commercialization of sodium-ion batteries. This article reviews the research progress of presodium technologies worldwide It examines advancements from three key perspectives, namely cathodes, electrolytes, and anodes. For the cathodes, sodium supplementation methods include direct impregnation, sacrificing additives, and electrochemical treatment. The optimization of electrolytes primarily focuses on improving sodium salts and solvents, balancing their proportions, and incorporating additives. For anodes, sodium supplementation techniques include direct sodium supplementation, electrochemical presodium method, hard carbon modification. This review summarizes the current progress of sodium supplement technology, elaborates on their advantages and disadvantages, evaluates their commercial viability, and offers guidance for the development of sodium supplementation strategies in sodium-ion batteries.

Key words: presodium, sodium-ion battery, additive, initial Coulombic efficiency

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