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Hydrogenated dual-shell sodium titanate cubes for sodium-ion batteries with optimized ion transportation

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Abstract

As a typical layered electrode material, sodium titanate has shown high energy density but poor ion transportation kinetics for sodium-ion batteries. Hence, optimizing the migration of larger ions in such a layered structured material is of great significance for sodium-ion batteries. Herein, we rationally construct dual-shell structured titanates with hydrogenated-induced oxygen vacancies to regulate the tunnels for Na ion transport structurally and atomically. Serving as anodes for batteries, the as-prepared samples exhibit enhanced rate performance compared to the one without oxygen vacancies. The result demonstrates an effective approach to optimize ion transport kinetics.

Graphical abstract: Hydrogenated dual-shell sodium titanate cubes for sodium-ion batteries with optimized ion transportation

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Supplementary files

Article information


Submitted
23 Jan 2020
Accepted
07 Apr 2020
First published
08 Apr 2020

J. Mater. Chem. A, 2020, Advance Article
Article type
Paper

Hydrogenated dual-shell sodium titanate cubes for sodium-ion batteries with optimized ion transportation

F. Xie, L. Zhang, Y. Jiao, A. Vasileff, D. Chao and S. Qiao, J. Mater. Chem. A, 2020, Advance Article , DOI: 10.1039/D0TA00967A

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