氧空位TiO2复合材料在钠离子电池中的研究进展-中国材料进展

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Title:: Progress of TiO2 with Oxygen Vacancies Composites in Sodium-Ion Batteries

文章编号:: 1674-3962(2025)10-0945-09

作者:: 周烽海; 李伟; 王绍聪; 吕奕菊; 刘峥; 桂林理工大学化学与生物工程学院广西电磁化学功能物质重点实验室,广西桂林 541004

Author(s):: ZHOU Fenghai; LI Wei; WANG Shaocong; LV Yiju; LIU Zheng; Guangxi Key Laboratory of Electromagnetic Chemical Functional Substances, School of Chemical and Biological Engineering, Guilin University of Technology, Guilin 541004, China

关键词:: 氧空位; TiO2复合材料; 钠离子电池; 负极材料; 电化学性能

Keywords:: oxygen vacancies; TiO2 composites; sodium-ion batteries; anode materials; electrochemical properties

分类号:: TB332;TM912

DOI:: 10.7502/j.issn.1674-3962.202305010

文献标志码:: A

摘要:: 对近些年国内外对氧空位TiO2复合材料在钠离子电池负极材料中的应用作了总结。首先介绍了TiO2氧空位产生的方法，如化学还原、缺氧条件、金属或非金属掺杂等，以及一些常用的氧空位表征方法，如EPR、XPS、STEM等技术。着重阐述了氧空位在TiO2中的作用，它能显著影响TiO2的物理和化学性质，包括能带结构、晶体结构和吸附性质。研究表明，富氧空位的TiO2钠储存性能显著提高。同时通过晶面控制剂NaBF4来调控TiO2（001）晶面比例来降低电子/离子转移阻抗。最后介绍了几种富含氧空位的TiO2复合材料的制备方法以及在钠离子电池负极材料中的实际应用，证实了氧空位的引入可以提高TiO2的导电性，有利于加速钠离子的吸附和扩散动力学，从而使氧空位TiO2复合材料获得优异的电化学性能。希望对氧空位TiO2复合材料的研究进行总结能为日后创造更高性能的此类复合材料提供参考。

Abstract:: This paper summarizes the applications of TiO2 with oxygen vacancies composites in sodium-ion battery anode materials at home and abroad in recent years. The paper firstly introduces the methods of TiO2 with oxygen vacancies generation, such as chemical reduction, anoxic conditions, metallic or non-metallic doping, etc., and some common methods of oxygen vacancy characterization, such as EPR, XPS, STEM and other techniques. The role of oxygen vacancies in TiO2 is highlighted, which can significantly affect the physical and chemical properties of TiO2, including energy band structure, crystal structure and adsorption properties. It is shown that oxygen deficient TiO2 can significantly improve the sodium storage properties. Also, the electron/ion transfer impedance is reduced by modulating the ratio of TiO2(001) crystallographic activity through the crystallographic surface control agent NaBF4. Finally, several methods for the preparation of oxygen vacancyrich TiO2 composites and their practical applications in the anode materials of sodium-ion batteries are exemplified, confirming that the introduction of oxygen vacancies can improve the electrical conductivity of TiO2 and facilitate the acceleration of sodium ion adsorption and diffusion kinetics, resulting in excellent electrochemical performance. This paper summarizes the research on TiO2 with oxygen vacancies composites, hoping to provide the basis and support for creating higher performance TiO2 with oxygen vacancies composites in the future.

中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

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