A Universal Solid Reaction Enabling Nanosized Li <sub>2</sub> S in an Amorphous Matrix for All-Solid-State Li–S Batteries
Lithium sulfide (Li<sub>2</sub>S), a key cathode material for all-solid-state lithium-sulfur (Li-S) batteries, faces challenges such as low electronic and ionic conductivities and limited active material utilization during cycling. In this study, we developed a new cathode featuring nanosized Li<sub>2</sub>S embedded in an amorphous LiFeS<sub>2</sub> matrix (92Li<sub>2</sub>S@8LiFeS<sub>2</sub>). Benefiting from the mixed electronic and ionic conductivities of LiFeS<sub>2</sub> along with its catalytic effect and the nanosized Li<sub>2</sub>S that shortens electron and ion transport distances, this 92Li<sub>2</sub>S@8LiFeS<sub>2</sub> cathode exhibits long-term cycling stability with a capacity retention of over 99% after 320 cycles. With an active material content of 48% and a mass loading of 19.1 mg/cm<sup>2</sup>, the cathode achieves an areal capacity of 13.2 mAh/cm<sup>2</sup>. This work presents a facile and novel approach to designing Li<sub>2</sub>S-based cathodes for high-performance, all-solid-state Li-S batteries.
Authors
- Xiaoting Lin (ORCID: https://orcid.org/0000-0002-1218-1895)
- Xueliang Andy Sun (ORCID: https://orcid.org/0000-0003-0374-1245)
- Xiaozhang Yao
- Jiamin Fu (ORCID: https://orcid.org/0000-0002-1874-111X)
- Jiabin Ma
- Xiaoge Hao
- Yang Hu (ORCID: https://orcid.org/0000-0002-5579-2936)
- Changhong Wang (ORCID: https://orcid.org/0000-0002-4201-0130)
- Weihan Li (ORCID: https://orcid.org/0000-0002-6542-1784)
- Yingjie Gao (ORCID: https://orcid.org/0000-0002-6853-7870)
- Feipeng Zhao (ORCID: https://orcid.org/0000-0002-1522-6606)
- Yipeng Sun
- Zhi Liang Dong
Institutions
- Western University (CA)
- Eastern Institute of Technology (NZ)
- Laboratoire de physique des Solides (FR)
- Tsinghua–Berkeley Shenzhen Institute (CN)
- Ningbo Institute of Industrial Technology (CN)
- Tsinghua University (CN)
Publication Details
- Journal
- Journal of the American Chemical Society
- Published
- 2025-08-30
- DOI
- https://doi.org/10.1021/jacs.4c18340
- Citations
- 4
- Primary Topic
- Advanced Battery Materials and Technologies
- Type
- article
- Field-Weighted Citation Impact
- 2.92
Funders
- Canada Foundation for Innovation
- Canada Research Chairs
- National Natural Science Foundation of China
- Western University
- Mitacs
- Ningbo Municipal Bureau of Science and Technology
- Natural Sciences and Engineering Research Council of Canada