An examination and prospect of stabilizing Li metal anode in lithium–sulfur batteries: A review of latest progress

Author:

Song Bingyan1,Su Laisuo2,Liu Xi1,Gao Wanjie1,Wang Tao1,Ma Yuan1,Zhong Yiren1,Cheng Xin‐Bing1,Zhu Zhi1,He Jiarui1ORCID,Wu Yuping1

Affiliation:

1. Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and Environment Southeast University Nanjing China

2. Department of Materials Science and Engineering University of Texas at Dallas Richardson Texas USA

Abstract

AbstractThe Li metal anode emerges as a formidable competitor among anode materials for lithium–sulfur (Li‐S) batteries; nevertheless, safety issues pose a significant hurdle in its path toward commercial viability. This review enumerates three historical challenges inherent to the Li metal anode: unavoidable volume expansion, multifunctional solid electrolyte interface formation, and uncontrollable lithium dendrite growth. In particular, when paired with a sulfur cathode, the Li anode presents an additional unique hurdle: the shuttle effect. To address these issues, this article offers a thorough examination of the latest innovations aimed at stabilizing the Li metal anode within Li‐S batteries. We categorize these approaches into five classifications: liquid electrolyte optimization, enhancement of non‐liquid‐state electrolytes, Li metal surface modification, Li anode architecture design, and Li alloy improvement. For several noteworthy results within these categories, we have compiled their electrochemical performance into tables, facilitating direct comparison. This detailed analysis illuminates feasible strategies and suggests directions warranting further exploration for optimizing the capability and safety of Li metal anodes in Li‐S batteries.

Funder

National Natural Science Foundation of China

Publisher

Wiley

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