Amorphous AlOCl Compounds Enabling Nanocrystalline LiCl with Abnormally High Ionic Conductivity
LiCl is a promising solid electrolyte, providing it possesses high ionic conductivity. Numerous efforts have been made to enhance its ionic conductivity through aliovalent doping. However, aliovalent substitution changes the intrinsic structure of LiCl, compromising its cost-effectiveness and electrochemical stability. Here, we report nanocrystalline LiCl embedded in amorphous AlOCl compounds with a heterogeneous structure to enhance its ionic conductivity. Nanocrystallization enlarges the LiCl unit cell, while amorphization facilitates interfacial ion transport. As a result, the amorphous AlOCl-modified LiCl nanocrystal (AlOCl-nanoLiCl) demonstrates a high ionic conductivity of 1.02 mS cm<sup>-1</sup>, which is 5 orders of magnitude higher than that of LiCl. Additionally, it exhibits high oxidative stability, low cost ($19.87 US kg<sup>-1</sup>), and low Young's modulus (2-3 GPa). When AlOCl-nanoLiCl is coupled with Li-rich cathodes (Li<sub>1.17</sub>Mn<sub>0.55</sub>Ni<sub>0.24</sub>Co<sub>0.05</sub>O<sub>2</sub>, 4.8 V vs Li<sup>+</sup>/Li), all-solid-state batteries exhibit remarkable long-term cycling stability (>1000 cycles). This work presents a novel strategy to enhance the ionic conductivity of alkaline chlorides without compromising their intrinsic advantages.
Authors
- Matthew Zheng (ORCID: https://orcid.org/0000-0002-7005-2522)
- Sen Xin (ORCID: https://orcid.org/0000-0002-0546-0626)
- Rui Wen (ORCID: https://orcid.org/0000-0003-2644-7452)
- Xusheng Zhang (ORCID: https://orcid.org/0000-0002-3039-9222)
- Xueliang Andy Sun (ORCID: https://orcid.org/0000-0003-0374-1245)
- Min Fan (ORCID: https://orcid.org/0000-0002-7927-3954)
- Jing Wan (ORCID: https://orcid.org/0000-0002-0531-5197)
- Ruizhi Yu (ORCID: https://orcid.org/0000-0002-3601-7870)
- Fucheng Ren (ORCID: https://orcid.org/0000-0001-7078-6238)
- Jiamin Fu (ORCID: https://orcid.org/0000-0002-1874-111X)
- Yu‐Guo Guo (ORCID: https://orcid.org/0000-0003-0322-8476)
- Jianwen Liang (ORCID: https://orcid.org/0000-0003-4055-1301)
- Shuo Wang (ORCID: https://orcid.org/0000-0002-7907-9676)
- Changhong Wang (ORCID: https://orcid.org/0000-0002-4201-0130)
- Xiaona Li (ORCID: https://orcid.org/0000-0001-6713-2997)
- Weihan Li (ORCID: https://orcid.org/0000-0002-6542-1784)
- Hui Duan (ORCID: https://orcid.org/0000-0003-3886-654X)
Institutions
- Western University (CA)
- Eastern Institute of Technology (NZ)
- Central South University (CN)
- Chinese Academy of Sciences (CN)
- Laboratoire de physique des Solides (FR)
- Ministry of Education (IR)
- Beijing National Laboratory for Molecular Sciences (CN)
- Eastern Institute of Technology, Ningbo
Publication Details
- Journal
- Journal of the American Chemical Society
- Published
- 2024-10-19
- DOI
- https://doi.org/10.1021/jacs.4c06498
- Citations
- 67
- Primary Topic
- Advanced Battery Materials and Technologies
- Type
- article
- Field-Weighted Citation Impact
- 13.98
Funders
- China Automotive Battery Research Institute
- Canada Foundation for Innovation
- Canada Research Chairs
- Chinese Academy of Sciences
- Western University
- Mitacs
- GLABAT Solid-State Battery
- Natural Sciences and Engineering Research Council of Canada