Ion bridging enables high-voltage polyether electrolytes for quasi-solid-state batteries
Abstract Polyether electrolytes have been widely recognized for their favorable compatibility with lithium-metal, yet they are hampered by intrinsically low oxidation thresholds, limiting their potential for realizing high-energy Li-metal batteries. Here, we report a general approach involving the b...
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Nature Portfolio
2025-01-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-56324-9 |
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| author | Tianyi Hou Donghai Wang Bowen Jiang Yi Liu Jia Kong Yanbing He Yunhui Huang Henghui Xu |
| author_facet | Tianyi Hou Donghai Wang Bowen Jiang Yi Liu Jia Kong Yanbing He Yunhui Huang Henghui Xu |
| author_sort | Tianyi Hou |
| collection | DOAJ |
| description | Abstract Polyether electrolytes have been widely recognized for their favorable compatibility with lithium-metal, yet they are hampered by intrinsically low oxidation thresholds, limiting their potential for realizing high-energy Li-metal batteries. Here, we report a general approach involving the bridge joints between non-lithium metal ions and ethereal oxygen, which significantly enhances the oxidation stability of various polyether electrolyte systems. To demonstrate the feasibility of the ion-bridging strategy, a Zn2+ ion-bridged polyether electrolyte (Zn-IBPE) with an extending electrochemical stability window of over 5 V is prepared, which enables good cyclability in 4.5 V Li||LiCoO2 batteries. Ampere-hour-level quasi-solid-state batteries of SiO-graphite||LiNi0.8Mn0.1Co0.1O2 (10 Ah, N/P ratio of 1.12, 303 Wh kg−1 at 0.1 C based on the total weight of the pouch cells) and 60 μm-Li||LiNi0.9Mn0.05Co0.05O2 (18 Ah, N/P ratio of 2.5, 452 Wh kg−1 at 0.33 C based on the total weight of the pouch cells) pouch cells with Zn-IBPE present elevated electrochemical performance, benefiting from adequate interfacial stability. Nail penetration tests evidence high battery safety enabled by Zn-IBPE in 4 Ah graphite||LiNi0.8Mn0.1Co0.1O2 pouch cells without combustion or smoke. This work offers a pathway for designing high-voltage polymer electrolytes and a general solution for achieving high-performance quasi-solid-state batteries. |
| format | Article |
| id | doaj-art-37994def7e344f5199a6967ff789b96d |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-37994def7e344f5199a6967ff789b96d2025-01-26T12:40:38ZengNature PortfolioNature Communications2041-17232025-01-0116111210.1038/s41467-025-56324-9Ion bridging enables high-voltage polyether electrolytes for quasi-solid-state batteriesTianyi Hou0Donghai Wang1Bowen Jiang2Yi Liu3Jia Kong4Yanbing He5Yunhui Huang6Henghui Xu7State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and TechnologyInstitute of New Energy for Vehicles, Shanghai Key Laboratory of Development & Application for Metallic Functional Materials, School of Materials Science and Engineering, Tongji UniversityState Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and TechnologyState Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and TechnologyState Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and TechnologyShenzhen All-Solid-State Lithium Battery Electrolyte Engineering Research Center and Shenzhen Geim Graphene Center, Institute of Materials Research (IMR), Tsinghua Shenzhen International Graduate School, Tsinghua UniversityState Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and TechnologyState Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and TechnologyAbstract Polyether electrolytes have been widely recognized for their favorable compatibility with lithium-metal, yet they are hampered by intrinsically low oxidation thresholds, limiting their potential for realizing high-energy Li-metal batteries. Here, we report a general approach involving the bridge joints between non-lithium metal ions and ethereal oxygen, which significantly enhances the oxidation stability of various polyether electrolyte systems. To demonstrate the feasibility of the ion-bridging strategy, a Zn2+ ion-bridged polyether electrolyte (Zn-IBPE) with an extending electrochemical stability window of over 5 V is prepared, which enables good cyclability in 4.5 V Li||LiCoO2 batteries. Ampere-hour-level quasi-solid-state batteries of SiO-graphite||LiNi0.8Mn0.1Co0.1O2 (10 Ah, N/P ratio of 1.12, 303 Wh kg−1 at 0.1 C based on the total weight of the pouch cells) and 60 μm-Li||LiNi0.9Mn0.05Co0.05O2 (18 Ah, N/P ratio of 2.5, 452 Wh kg−1 at 0.33 C based on the total weight of the pouch cells) pouch cells with Zn-IBPE present elevated electrochemical performance, benefiting from adequate interfacial stability. Nail penetration tests evidence high battery safety enabled by Zn-IBPE in 4 Ah graphite||LiNi0.8Mn0.1Co0.1O2 pouch cells without combustion or smoke. This work offers a pathway for designing high-voltage polymer electrolytes and a general solution for achieving high-performance quasi-solid-state batteries.https://doi.org/10.1038/s41467-025-56324-9 |
| spellingShingle | Tianyi Hou Donghai Wang Bowen Jiang Yi Liu Jia Kong Yanbing He Yunhui Huang Henghui Xu Ion bridging enables high-voltage polyether electrolytes for quasi-solid-state batteries Nature Communications |
| title | Ion bridging enables high-voltage polyether electrolytes for quasi-solid-state batteries |
| title_full | Ion bridging enables high-voltage polyether electrolytes for quasi-solid-state batteries |
| title_fullStr | Ion bridging enables high-voltage polyether electrolytes for quasi-solid-state batteries |
| title_full_unstemmed | Ion bridging enables high-voltage polyether electrolytes for quasi-solid-state batteries |
| title_short | Ion bridging enables high-voltage polyether electrolytes for quasi-solid-state batteries |
| title_sort | ion bridging enables high voltage polyether electrolytes for quasi solid state batteries |
| url | https://doi.org/10.1038/s41467-025-56324-9 |
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