Engineering a novel microcapsule of Cu9S5 core and SnS2 quantum dot/carbon nanotube shell as a Li-ion battery anode

Jinyun Liu; Mengfei Zhu; Kai Mu; Tianli Han; Zeng Pan; Yuqing Gan; Huigang Zhang; Ting Si

doi:10.1039/D1CC05657C

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Engineering a novel microcapsule of Cu₉S₅ core and SnS₂ quantum dot/carbon nanotube shell as a Li-ion battery anode†

Jinyun Liu,

*^a Mengfei Zhu,^a Kai Mu,^b Tianli Han,^a Zeng Pan,^c Yuqing Gan,^a Huigang Zhang*^de and Ting Si

*^b

Author affiliations

* Corresponding authors

^a Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, P. R. China
E-mail: jyliu@iim.ac.cn

^b Department of Modern Mechanics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
E-mail: tsi@ustc.edu.cn

^c Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China

^d National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, P. R. China
E-mail: hgzhang@nju.edu.cn

^e State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China

Abstract

A novel microcapsule composed of Cu₉S₅ and SnS₂ quantum dots (QDs)/carbon nanotubes (CNTs) prepared through a microfluidic approach was developed for a Li-ion battery anode. CNTs enhance the conductivity, while pores in the shell facilitate electrolyte penetration, and void in the microcapsule buffers the volume change. The microcapsule-based anode displayed stable capacity, a Coulombic efficiency of 99.9%, and reversible rate-performance at temperatures of −10 °C and 45 °C, which are significant for developing high-performance energy-storage materials and battery systems.

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Article information

DOI: https://doi.org/10.1039/D1CC05657C
Article type: Communication
Submitted: 07 Oct 2021
Accepted: 09 Nov 2021
First published: 09 Nov 2021

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Chem. Commun., 2021,57, 13397-13400

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Engineering a novel microcapsule of Cu₉S₅ core and SnS₂ quantum dot/carbon nanotube shell as a Li-ion battery anode

J. Liu, M. Zhu, K. Mu, T. Han, Z. Pan, Y. Gan, H. Zhang and T. Si, Chem. Commun., 2021, 57, 13397 DOI: 10.1039/D1CC05657C

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