Challenges and Prospects of Alkali Metal Sulfide Cathodes Toward Advanced Solid‐State Metal‐Sulfur Batteries
Abstract Rechargeable solid‐state metal‐sulfur batteries (SSMSBs) have attracted extensive attention due to their high energy density, improved safety, and low cost. The development of SSMSBs, however, is hindered by challenges of inferior interface contact, electrode structure deformation, and safety concerns from metal anodes. Alkali metal sulfides (M 2 S x ) are promising candidates for cathode in SSMSBs, as they exhibit minimal volume change and are compatible with non‐alkali metal anodes. Therefore, SSMSBs can achieve high stability and safety, providing a more feasible choice for practical applications. This review comprehensively summarizes recent advancements in M 2 S x ‐based cathodes for SSMSBs, along with state‐of‐the‐art strategies to optimize cathodes, electrolytes, and interfaces to achieve desirable performance. Advanced characterization techniques to understand the reaction mechanisms are discussed in detail. Furthermore, the development perspectives and future research directions for solid‐state batteries (SSBs) with M 2 S x are also elucidated.
Authors
- Guoxiu Wang (ORCID: https://orcid.org/0000-0003-4295-8578)
- Lei Zhang (ORCID: https://orcid.org/0000-0002-9677-120X)
- Weixin Lei (ORCID: https://orcid.org/0000-0003-3021-2787)
- Lingfei Zhao (ORCID: https://orcid.org/0000-0003-3683-4210)
- Wei‐Hong Lai (ORCID: https://orcid.org/0000-0002-8685-9662)
- Yaru Liang (ORCID: https://orcid.org/0000-0002-9694-8714)
- Xupeng Xu (ORCID: https://orcid.org/0000-0001-8390-0490)
- Yunxiao Wang (ORCID: https://orcid.org/0000-0003-1704-0829)
- Xiang Huang (ORCID: https://orcid.org/0000-0002-0641-3020)
- Yaojie Lei
- Zengsheng Ma (ORCID: https://orcid.org/0000-0001-6485-9752)
- Haitao Yu (ORCID: https://orcid.org/0000-0002-0302-998X)
- Guoxin Chen (ORCID: https://orcid.org/0000-0001-6252-7041)
- Peiling Ke
Institutions
- University of Technology Sydney (AU)
- University of Shanghai for Science and Technology (CN)
- Fudan University (CN)
- Collaborative Innovation Center of Chemistry for Energy Materials (CN)
- Ningbo Institute of Industrial Technology (CN)
- Xiangtan University (CN)
Publication Details
- Journal
- Advanced Energy Materials
- Published
- 2025-09-04
- DOI
- https://doi.org/10.1002/aenm.202503471
- Citations
- 4
- Primary Topic
- Advanced Battery Materials and Technologies
- Type
- article
- Field-Weighted Citation Impact
- 2.92
Funders
- University of Technology Sydney
- National Natural Science Foundation of China
- China Postdoctoral Science Foundation
- Natural Science Foundation of Hunan Province
- Xiangtan University
- Australian Research Council