欢迎访问《电化学(中英文)》期刊官方网站,今天是

电化学(中英文) ›› 2019, Vol. 25 ›› Issue (1): 31-44.  doi: 10.13208/j.electrochem.180547

• 综述 • 上一篇    下一篇

二氧化钛基钠离子电池负极材料研究进展

廉思甜,吕建帅,于强,胡光武,陈卓,周亮*,麦立强*   

  1. 武汉理工大学, 材料复合新技术国家重点实验室, 湖北 武汉 430070
  • 收稿日期:2018-07-16 修回日期:2018-08-10 出版日期:2019-02-28 发布日期:2019-02-28
  • 通讯作者: 周亮,麦立强 E-mail:liangzhou@whut.edu.cn; mlq518@whut.edu.cn
  • 基金资助:
    国家自然科学基金(No. 21673171, No. 51502226)和国家杰出青年科学基金(No. 51425204)资助

Recent Progress on TiO2-Based Anode Materials for Sodium-Ion Batteries

LIAN Si-tian, LV Jian-shuai, YU Qiang, HU Guang-wu, CHEN Zhuo, ZHOU Liang*, MAI Li-qiang*   

  1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China
  • Received:2018-07-16 Revised:2018-08-10 Published:2019-02-28 Online:2019-02-28
  • Contact: ZHOU Liang, MAI Li-qiang E-mail:liangzhou@whut.edu.cn; mlq518@whut.edu.cn

摘要: 二氧化钛(TiO2)是一种稳定、廉价、无毒的钠离子电池负极材料,具有良好的应用前景.然而其导电性较低,限制了其电化学活性(比容量)和倍率特性,阻碍了其规模化应用.本文系统总结了微观结构调控、引入氧缺陷、异质元素掺杂和纳米复合等策略对TiO2导电性和电化学性能的影响.最后,文章展望了TiO2基钠离子电池负极材料的发展方向.

关键词: 二氧化钛, 钠离子电池, 纳米复合材料, 掺杂, 氧缺陷

Abstract: Titanium dioxide (TiO2) represents a stable, low-cost, and nontoxic anode material for sodium-ion batteries (SIBs). However, the low electrical conductivity limits its electrochemical activity (specific capacity) and rate capability, hindering its widespread applications. In this article, we show that different crystal forms of TiO2 have different pore structures, resulting in the distinct sodium storage capacities. Accordingly, the article introduces how TiO2 microstructures influence sodium storage. The nanoparticle structure can improve the rate performance of the material due to its short ion diffusion distance, and the internal cavity of the hollow structure is beneficial to cycle stability. In addition, we conclude that the conductivity of the material can be enhanced by oxygen defects or doping metals/non-metals. Lots of experimental results show that TiO2 with carbon or metal composite structures has excellent electrochemical performance. In brief, this article comprehensively summarizes the effects of microstructure, oxygen vacancy, doping, and compositing on the conductivity and electrochemical performances of TiO2-based anode materials. Beyond that, future research directions for TiO2-based anode materials are also predicted at the end of this review.

Key words: TiO2, sodium-ion battery, nanocomposites, doping, oxygen vacancy

中图分类号: