Chemical Industry and Engineering Progress ›› 2018, Vol. 37 ›› Issue (08): 3056-3066.DOI: 10.16085/j.issn.1000-6613.2017-1761

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Recent development of cathode materials for sodium-ion batteries

WANG Yong1, LIU Wen1, GUO Rui1, LUO Ying2, XIE Jingying1,2   

  1. 1 State Key Laboratory of Space Power-Sources Technology, Shanghai Institute of Space Power-Sources, Shanghai 200245, China;
    2 Shanghai Power & Energy Storage Battery System Engineering Tech. Co., Ltd., Shanghai 200241, China
  • Received:2017-08-21 Revised:2018-02-11 Online:2018-08-05 Published:2018-08-05

钠离子电池正极材料研究进展

王勇1, 刘雯1, 郭瑞1, 罗英2, 解晶莹1,2   

  1. 1 上海空间电源研究所空间电源技术国家重点实验室, 上海 200245;
    2 上海动力储能电池系统工程技术有限公司, 上海 200241
  • 通讯作者: 解晶莹,博士,研究员,主要研究方向为化学电源相关先进材料、电池及系统设计。
  • 作者简介:王勇(1993-),男,硕士研究生,研究方向为钠离子电池正极材料。E-mail:15201755898@163.com。
  • 基金资助:
    国家自然科学基金项目(NSFC21373137)。

Abstract: Considerable attention on next generation rechargeable battery has been attracted by sodium-ion batteries(SIB), due to the similar working mechanism and electrochemistrical properties to lithium-ion batteries. In this paper, review of cathode materials of SIB has been made. Typical properties of different cathode materials were introduced firstly. Two major deficiencies of large ionic radius and slow diffusion velocity were pointed out. On the one hand, sodium ion owned larger ion radius, which will cause structural wreck during cycling. On the other hand, larger ion radius may cause a slower kinetics, which will indicate a poor rate performance. Then, different modification methods and their performance in application was reviewed. This review provides a foundation for future investigation of the cathode materials of sodium-ion batteries.

Key words: energy storage system, sodium-ion battery, cathode material, low-cost

摘要: 钠离子电池与锂离子电池工作原理相似,却有着更低的成本和更高的安全性。在钠离子电池中,正极材料的研究尤为重要。本文对现有的钠离子电池正极材料进行了系统性的归纳,首先介绍了各类正极材料的结构和电化学特性,基于此分析目前钠离子电池正极材料面临的两个主要制约因素:一是钠离子半径大,充放电过程中对材料结构的影响大,导致容量衰减迅速;二是动力学过程慢,导致其倍率性能差。在此基础上归纳了现有的各类钠离子电池正极材料的改性方法如掺杂、包覆等。总结了材料改性及改善材料电化学性能的方法以及应用在现有材料中时所获得的效果,基于此为未来的钠离子电池正极材料及其改性研究提供了基础。

关键词: 储能, 钠离子电池, 正极材料, 低成本

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