Issue 41, 2019

Hollow TiO2 submicrospheres assembled by tiny nanocrystals as superior anode for lithium ion battery

Abstract

Developing a facile and green methodology to prepare nanostructured transition metal oxides (TMD) formed by sub-10 nm nanocrystals for the electrochemical energy conversion and storage remains an important challenge. Herein, we present hollow TiO2 submicrospheres, assembled by 10 nm units via a facile one-step, low-temperature hydrothermal strategy. When used as anodes for lithium ion batteries, the submicrospheres could exhibit excellent rate capabilities of 223, 153, 44 and 22 mA h g−1 at 1C, 10C, 100C and 300C, respectively. More importantly, they demonstrated a long-term cycling performance and structural stability over 2000 cycles at 10C and even 300C. The superb performances mainly originate from the integration of distinct advantages of the well-defined hollow structures and tiny TiO2 grains into a single component via the environmental friendly synthesis strategy.

Graphical abstract: Hollow TiO2 submicrospheres assembled by tiny nanocrystals as superior anode for lithium ion battery

Supplementary files

Article information

Article type
Communication
Submitted
01 ožu 2019
Accepted
01 tra 2019
First published
02 tra 2019

J. Mater. Chem. A, 2019,7, 23733-23738

Hollow TiO2 submicrospheres assembled by tiny nanocrystals as superior anode for lithium ion battery

J. Hou, H. Zhang, J. Lin, X. Qiu, W. Zhao, X. Sun, Y. Xiang, H. Zhang, G. Xing, D. Zheng, G. Li and Z. Tang, J. Mater. Chem. A, 2019, 7, 23733 DOI: 10.1039/C9TA02279A

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