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Tao et al. Energy Mater 2022;2:200036 Energy Materials
DOI: 10.20517/energymater.2022.46

Review Open Access

Understanding the role of interfaces in solid-state

lithium-sulfur batteries

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2
1
*
1,
1
1
2
Tao Tao , Zhijia Zheng , Yuxuan Gao , Baozhi Yu , Ye Fan , Ying Chen , Shaoming Huang , Shengguo Lu 1
1
School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, Guangdong, China.
2
Institute for Frontier Materials, Deakin University, Waurn Ponds 3216, Australia.
* Correspondence to: Dr. Tao Tao, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006,
Guangdong, China. E-mail: taotao@gdut.edu.cn
How to cite this article: Tao T, Zheng Z, Gao Y, Yu B, Fan Y, Chen Y, Huang S, Lu S. Understanding the role of interfaces in solid-
state lithium-sulfur batteries. Energy Mater 2022;2:200036. https://dx.doi.org/10.20517/energymater.2022.46
Received: 16 Aug 2022 First Decision: 6 Sep 2022 Revised: 23 Sep 2022 Accepted: 8 Oct 2022 Published: 21 Oct 2022
Academic Editors: Yuping Wu, Jiazhao Wang Copy Editor: Fangling Lan Production Editor: Fangling Lan
Abstract
All-solid-state lithium-sulfur batteries (ASSLSBs) exhibit huge potential applications in electrical energy storage
systems due to their unique advantages, such as low costs, safety and high energy density. However, the issues
facing solid-state electrolyte (SSE)/electrode interfaces, including lithium dendrite growth, poor interfacial
capability and large interfacial resistance, seriously hinder their commercial development. Furthermore, an
insufficient fundamental understanding of the interfacial roles during cycling is also a significant challenge for
designing and constructing high-performance ASSLSBs. This article provides an in-depth analysis of the origin and
issues of SSE/electrode interfaces, summarizes various strategies for resolving these interfacial issues and
highlights advanced analytical characterization techniques to effectively investigate the interfacial properties of
these systems. Future possible research directions for developing high-performance ASSLSBs are also suggested.
Overall, advanced in-situ characterization techniques, intelligent interfacial engineering and a deeper understanding
of the interfacial properties will aid the realization of high-performance ASSLSBs.

Keywords: All-solid-state lithium-sulfur batteries, interfacial issues, advanced strategies, solid-state electrolytes,
sulfur-based cathodes

INTRODUCTION
The development of portable electronic equipment and electric vehicle technology has created a substantial

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