Enregistré dans:
| Auteurs principaux: | , , , |
|---|---|
| Format: | Preprint |
| Publié: |
2024
|
| Sujets: | |
| Accès en ligne: | https://arxiv.org/abs/2409.18344 |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866914958451671040 |
|---|---|
| author | He, Jian Qi, Shihan Ma, Jianmin Artrith, Nongnuch |
| author_facet | He, Jian Qi, Shihan Ma, Jianmin Artrith, Nongnuch |
| contents | Ether-based electrolytes exhibit excellent compatibility with Li metal anodes, but their instability at high voltages limits their use in high-voltage Li metal batteries. To address this issue, we introduce an alternative perfluorobutane sulfonate (LiPFBS) / dimethoxyethane (DME) electrolyte to stabilize DME in a 4.6 V Li-Li LCO battery. Our study focuses on the formation of solid-electrolyte interphase (SEI) and cathode-electrolyte interphase (CEI) layers compared to the LiTFSI/DME electrolyte. We demonstrate that LiPFBS helps maintain DME's compatibility in SEI formation. Additionally, a durable CEI layer derived from PFBS$^{-}$ enhances the performance of the cell at high voltages by forming a robust, inorganic-dominant CEI layer. A PFBS$^{-}$-derived CEI significantly enhances the overall performance of the full cell under high voltage conditions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_18344 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Highly Antioxidative Lithium Salt Enables High-Voltage Ether Electrolyte for Lithium Metal Battery He, Jian Qi, Shihan Ma, Jianmin Artrith, Nongnuch Materials Science Ether-based electrolytes exhibit excellent compatibility with Li metal anodes, but their instability at high voltages limits their use in high-voltage Li metal batteries. To address this issue, we introduce an alternative perfluorobutane sulfonate (LiPFBS) / dimethoxyethane (DME) electrolyte to stabilize DME in a 4.6 V Li-Li LCO battery. Our study focuses on the formation of solid-electrolyte interphase (SEI) and cathode-electrolyte interphase (CEI) layers compared to the LiTFSI/DME electrolyte. We demonstrate that LiPFBS helps maintain DME's compatibility in SEI formation. Additionally, a durable CEI layer derived from PFBS$^{-}$ enhances the performance of the cell at high voltages by forming a robust, inorganic-dominant CEI layer. A PFBS$^{-}$-derived CEI significantly enhances the overall performance of the full cell under high voltage conditions. |
| title | Highly Antioxidative Lithium Salt Enables High-Voltage Ether Electrolyte for Lithium Metal Battery |
| topic | Materials Science |
| url | https://arxiv.org/abs/2409.18344 |