Nanoscale stabilization of Li–sulfur batteries by atomic layer deposited Al2O3

Xia Li; Jian Liu; Biqiong Wang; Mohammad N. Banis; Biwei Xiao; Ruying Li; Tsun-Kong Sham; Xueliang Sun

doi:10.1039/C4RA04015E

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Nanoscale stabilization of Li–sulfur batteries by atomic layer deposited Al₂O₃†

Xia Li,^a Jian Liu,^a Biqiong Wang,^ab Mohammad N. Banis,^a Biwei Xiao,^a Ruying Li,^a Tsun-Kong Sham^b and Xueliang Sun*^a

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* Corresponding authors

^a Department of Mechanical and Materials Engineering, University of Western Ontario, London, ON, Canada
E-mail: xsun@eng.uwo.ca
Fax: +1 519 661 3020
Tel: +1 519 661 2111 ext. 87759

^b Department of Chemistry, University of Western Ontario, London, Ontario, Canada

Abstract

An atomic layer deposited (ALD) Al₂O₃ coating applied to sulfur cathodes has been studied in this paper. It is demonstrated that the Al₂O₃ coating improves the cycling stability of Li–sulfur batteries. The underlying mechanism by synchrotron-based X-ray photoelectron spectroscopy was investigated. The coating layer not only protects the polysulfide from dissolution, but also facilitates the utilization of sulfur, demonstrating improved electrochemical performances.

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Article information

DOI: https://doi.org/10.1039/C4RA04015E
Article type: Communication
Submitted: 02 May 2014
Accepted: 10 Jun 2014
First published: 11 Jun 2014

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RSC Adv., 2014,4, 27126-27129

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Nanoscale stabilization of Li–sulfur batteries by atomic layer deposited Al₂O₃

X. Li, J. Liu, B. Wang, M. N. Banis, B. Xiao, R. Li, T. Sham and X. Sun, RSC Adv., 2014, 4, 27126 DOI: 10.1039/C4RA04015E

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