Abstract
Composite solid electrolytes with ceramic particles dispersed in a polymer matrix are considered a correct choice for all-solid-state batteries. These electrolytes balance the high ionic conductivity of superionic-ceramic conductors and the elasticity of polymers. Here, Li||LiFePO4 batteries with 30 wt% of LATP embedded in PEO20:LiTFSI show superior performance at elevated temperature. After ∼150 cycles, cells retained 84% of their original capacity compared to only 51% for batteries with no additive. At 5 C cells demonstrate 43% higher capacity. In symmetric cells with blocking and non-blocking electrodes and all-solid-state batteries LATP lowers the impedance of the electrode-electrolyte interface ensuring cycling stability. LATP improves performance by stabilization of the cathode-electrolyte interface, apparently the major contributor to the cell impedance.
| Original language | English |
|---|---|
| Article number | 090509 |
| Journal | Journal of the Electrochemical Society |
| Volume | 170 |
| Issue number | 9 |
| DOIs | |
| State | Published - 2023 |
Bibliographical note
Publisher Copyright:© 2023 The Author(s). Published on behalf of The Electrochemical Society by IOP Publishing Limited.
Funding
Partial financial support was provided by the Israel Science Foundation (ISF) and the U.S.-Israel Binational Industrial Research and Development (BIRD) Foundation. The authors declare no competing financial interests. OB thanks MOST for a STEM scholarship for Ph.D. students. NLW acknowledges financial support from the Taiwan National Science and Technology Council (fund ♯ 108–2923-E-002 −007 -MY2).
| Funders | Funder number |
|---|---|
| U.S.-Israel Binational Industrial Research and Development | |
| BIRD Foundation | |
| National Science and Technology Council | 108–2923-E-002 −007 -MY2 |
| Ministry of Science and Technology of the People's Republic of China | |
| Israel Science Foundation |
