Hydrogenated dual-shell sodium titanate cubes for sodium-ion batteries with optimized ion transportation
Date
2020
Authors
Xie, F.
Zhang, L.
Jiao, Y.
Vasileff, A.
Chao, D.
Qiao, S.-Z.
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Journal of Materials Chemistry A, 2020; 8(31):15829-15833
Statement of Responsibility
Fangxi Xie, Lei Zhang, Yan Jiao, Anthony Vasileff, Dongliang Chao and Shi-Zhang Qiao
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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.
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This journal is © The Royal Society of Chemistry 2020