Energy Storage Science and Technology ›› 2025, Vol. 14 ›› Issue (8): 3051-3064.doi: 10.19799/j.cnki.2095-4239.2025.0399

• Special Issue on Short Term High-Frequency High-Power Energy Storage • Previous Articles    

Boosting sodium battery energy storage: New research progress of pre-sodiation technology

Jingyu XIANG1,2(), Wei ZHONG1,3, Shijie CHENG1, Jia XIE1()   

  1. 1.School of Electrical and Electronic Engineering, National Key Laboratory of Strong Electromagnetic Technology, Huazhong University of Science and Technology
    2.School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology
    3.School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
  • Received:2025-04-23 Revised:2025-05-06 Online:2025-08-28 Published:2025-08-18
  • Contact: Jia XIE E-mail:xiangjingyu@hust.edu.cn;xiejia@hust.edu.cn

Abstract:

Sodium and lithium exhibit similar physicochemical properties, and sodium resources are abundant and widely distributed. Accordingly, sodium-ion batteries (SIBs) are regarded as promising complements to lithium-ion battery energy storage systems, with broad potential for large-scale and short-term high-frequency energy storage applications. However, the initial coulombic efficiency (ICE) of sodium-storage anode materials is generally low, preventing them from realizing their theoretical capacity. Pre-sodiation technology, as one of the most effective active sodium compensation strategies, can effectively mitigate active sodium loss. This paper comprehensively analyzes the major challenges facing pre-sodiation technology in recent years and summarizes novel approaches proposed to address these issues. Based on the redox properties of various sodium sources, current pre-sodiation techniques are categorized into reductive and oxidative pre-sodiation. The advantages, disadvantages, and industrial feasibility of different pre-sodiation methods are compared, with a focus on elucidating their mechanisms and research progress. Furthermore, the development prospects of pre-sodiation technology are discussed. This review aims to deepen understanding of pre-sodiation technology and provide theoretical guidance and innovative insights for optimizing and developing novel pre-sodiation techniques suitable for high-power applications at scale. Based on existing research, we propose that solid-state oxidative pre-sodiation materials hold promise for enabling multiple sodium replenishments throughout the battery's lifecycle, thereby establishing a technical foundation for high-power, high-energy-density sodium-ion batteries.

Key words: sodium-ion batteries, pre-sodiation, coulombic efficiency, long cycle life, high energy density, high power density

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