文章信息/Info

Title:

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

文章編號(hào):

1674-3962(2025)10-0945-09

作者:

周烽海; 李偉; 王紹聰; 呂奕菊; 劉崢

桂林理工大學(xué)化學(xué)與生物工程學(xué)院 廣西電磁化學(xué)功能物質(zhì)重點(diǎn)實(shí)驗(yàn)室,廣西 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

關(guān)鍵詞:

氧空位; TiO2復(fù)合材料; 鈉離子電池; 負(fù)極材料; 電化學(xué)性能

Keywords:

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

分類號(hào):

TB332;TM912

DOI:

10.7502/j.issn.1674-3962.202305010

文獻(xiàn)標(biāo)志碼:

A

摘要:

對(duì)近些年國(guó)內(nèi)外對(duì)氧空位TiO2復(fù)合材料在鈉離子電池負(fù)極材料中的應(yīng)用作了總結(jié)。首先介紹了TiO2氧空位產(chǎn)生的方法，如化學(xué)還原、缺氧條件、金屬或非金屬摻雜等，以及一些常用的氧空位表征方法，如EPR、XPS、STEM等技術(shù)。著重闡述了氧空位在TiO2中的作用，它能顯著影響TiO2的物理和化學(xué)性質(zhì)，包括能帶結(jié)構(gòu)、晶體結(jié)構(gòu)和吸附性質(zhì)。研究表明，富氧空位的TiO2鈉儲(chǔ)存性能顯著提高。同時(shí)通過(guò)晶面控制劑NaBF4來(lái)調(diào)控TiO2（001）晶面比例來(lái)降低電子/離子轉(zhuǎn)移阻抗。最后介紹了幾種富含氧空位的TiO2復(fù)合材料的制備方法以及在鈉離子電池負(fù)極材料中的實(shí)際應(yīng)用，證實(shí)了氧空位的引入可以提高TiO2的導(dǎo)電性，有利于加速鈉離子的吸附和擴(kuò)散動(dòng)力學(xué)，從而使氧空位TiO2復(fù)合材料獲得優(yōu)異的電化學(xué)性能。希望對(duì)氧空位TiO2復(fù)合材料的研究進(jìn)行總結(jié)能為日后創(chuàng)造更高性能的此類復(fù)合材料提供參考。

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�瞨ich 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.