Oxygen vacancies boosted the electrochemical kinetics of Nb2O5−x for superior lithium storage

Sheng Li; Yingxue Cui; Rong Kang; Bobo Zou; Dickon H. L. Ng; Sherif A. El-Khodary; Xianhu Liu; Jingxia Qiu; Jiabiao Lian; Huaming Li

doi:10.1039/D1CC02299G

Oxygen vacancies boosted the electrochemical kinetics of Nb₂O_5−x for superior lithium storage†

Sheng Li,‡^a Yingxue Cui,‡^a Rong Kang,^a Bobo Zou,^a Dickon H. L. Ng,^b Sherif A. El-Khodary,^a Xianhu Liu,^c Jingxia Qiu,^a Jiabiao Lian

*^a and Huaming Li

^a

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* Corresponding authors

^a Key Laboratory of Zhenjiang, Institute for Energy Research, Jiangsu University, Zhenjiang, P. R. China
E-mail: jblian@ujs.edu.cn

^b Department of Physics, The Chinese University of Hong Kong, Hong Kong, China

^c Key Laboratory of Materials Processing & Mold (Zhengzhou University), Ministry of Education, Zhengzhou University, Zhengzhou, P. R. China

Abstract

The introduction of oxygen vacancies (OVs) into Nb₂O₅ can not only provide more active sites for lithium storage but also change the electronic structure of Nb₂O₅ to boost electron/ion transport kinetics. Consequently, the defective Nb₂O_5−x exhibits high lithium storage capacity, superior rate capability, and cycling stability.

Chemical Communications

Oxygen vacancies boosted the electrochemical kinetics of Nb₂O_5−x for superior lithium storage†

Abstract

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Oxygen vacancies boosted the electrochemical kinetics of Nb₂O_5−x for superior lithium storage

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Chemical Communications