Oxygen Vacancy Engineering in Titanium Dioxide for Sodium Storage

Qi Wang¹, Shan Zhang¹, Hanna He², Chunlin Xie¹, Yougen Tang¹, Chuanxin He³, Minhua Shao^{4

5}, Haiyan Wang¹

Affiliations

¹ Hunan Provincial Key Laboratory of Chemical Power Sources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P. R. China.
² State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu, 610065, P. R. China.
³ College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, P. R. China.
⁴ Department of Chemical and Biological Engineering, Energy Institute, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China.
⁵ Fok Ying Tung Research Institute, Hong Kong University of Science and Technology, Guangzhou, 511458, P. R. China.

PMID: 33150730
DOI: 10.1002/asia.202001172

Review

Oxygen Vacancy Engineering in Titanium Dioxide for Sodium Storage

Qi Wang et al. Chem Asian J. 2021.

. 2021 Jan 4;16(1):3-19.

doi: 10.1002/asia.202001172. Epub 2020 Nov 23.

Authors

Qi Wang¹, Shan Zhang¹, Hanna He², Chunlin Xie¹, Yougen Tang¹, Chuanxin He³, Minhua Shao^{4

5}, Haiyan Wang¹

Affiliations

¹ Hunan Provincial Key Laboratory of Chemical Power Sources, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P. R. China.
² State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu, 610065, P. R. China.
³ College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, P. R. China.
⁴ Department of Chemical and Biological Engineering, Energy Institute, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China.
⁵ Fok Ying Tung Research Institute, Hong Kong University of Science and Technology, Guangzhou, 511458, P. R. China.

PMID: 33150730
DOI: 10.1002/asia.202001172

Abstract

Titanium dioxide (TiO₂ ) is a promising anode material for sodium-ion batteries (SIBs) due to its low cost, natural abundance, nontoxicity, and excellent electrochemical stability. Oxygen vacancies, the most common point defects in TiO₂ , can dramatically influence the physical and chemical properties of TiO₂ , including band structure, crystal structure and adsorption properties. Recent studies have demonstrated that oxygen-deficient TiO₂ can significantly enhance sodium storage performance. Considering the importance of oxygen vacancies in modifying the properties of TiO₂ , the structural properties, common synthesis strategies, characterization techniques, as well as the contribution of oxygen-deficient TiO₂ on initial Coulombic efficiency, cyclic stability, rate performance for sodium storage are comprehensively described in this review. Finally, some perspectives on the challenge and future opportunities for the development of oxygen-deficient TiO₂ are proposed.

Keywords: TiO2; defects; electrochemical energy storage; oxygen vacancy; sodium-ion batteries.

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Oxygen Vacancy Engineering in Titanium Dioxide for Sodium Storage

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Oxygen Vacancy Engineering in Titanium Dioxide for Sodium Storage

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