ZnSn(OH)6 nanocubes as a high-performance anode for lithium-ion batteries

Qian Yang1, Zhibin Wu2, 3*, Zhijian Wang1, Wei Liu1, Jianwen Liu1, Chuanqi Feng1, Wei Sun4, Haimin Zhao4, Zaiping Guo1, 2, 3

1Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials and Ministry-of-Education Key Laboratory for Synthesis and Applications of Organic Functional Molecules, Hubei University, Wuhan 430062, China

2School of Mechanical, Materials & Mechatronics Engineering, University of Wollongong, Wollongong, New South Wales 2500, Australia

3Institute for Superconducting & Electronic Materials, University of Wollongong, Wollongong, New South Wales 2522, Australia

4Tianneng Battery Group  Co.  Ltd, 18 Baoqiao Road,  Huaxi  Industrial  Functional Zone, Changxing, Zhejiang, 313100, China

Adv. Mater. Lett., 2018, 9 (12), pp 880-884

DOI: 10.5185/amlett.2018.2143

Publication Date (Web): Sep 14, 2018

E-mail: zguo@uow.edu.au

Abstract


Single-phase bi-metal oxides and sulfides have attracted considerable research interest recently for battery application because of their outstanding electrochemical properties, but there are few reports on single-phase bi-metal hydroxides in battery research. Herein, we pioneer the electrochemical study of ZnSn(OH)6 nanocubes for lithium-ion battery application. The ZnSn(OH)6 nanocubes, synthesized by a facile hydrothermal method, can deliver a favorable specific discharge capacity of 599.3 mA h g-1 at 500 mA g-1 after 200 cycles and maintain good rate capability even at 2 A g-1. The excellent electrochemical performance of these ZnSn(OH)6 nanocubes can be attributed to the synergetic Li storage capability of Zn and Sn elements with diverse electrochemical reactions, the small uniform nanocubes (30−50 nm) that alleviate the pulverization and cracking of the electrode and shorten electron/ion transport paths, and the good mechanical properties of ZnSn(OH)6, which facilitate maintenance of the structural integrity of the electrode during the Li+ extraction/insertion process. Therefore, with these outstanding advantages, the ZnSn(OH)6 nanocubes could be one of the most promising anodes for advanced lithium-ion batteries.

Keywords

ZnSn(OH)6, bi-metal hydroxides, lithium-ion batteries, anode.

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