التفاصيل البيبلوغرافية
| العنوان: |
Single-phase local-high-concentration solid polymer electrolytes for lithium-metal batteries |
| المؤلفون: |
Weiran Zhang, Volodymyr Koverga, Sufu Liu, Jigang Zhou, Jian Wang, Panxing Bai, Sha Tan, Naveen K. Dandu, Zeyi Wang, Fu Chen, Jiale Xia, Hongli Wan, Xiyue Zhang, Haochen Yang, Brett L. L |
| المصدر: |
Nature, Nature Energy. 9(4):386-400 |
| سنة النشر: |
2024 |
| الوصف: |
Solid polymers are promising electrolytes for Li-metal batteries, but they have limitations: they cannot simultaneously achieve high ionic conductivity, good mechanical strength and compatibility with high-voltage cathodes while suppressing Li dendrites. Here, we design a class of locally high-concentration solid polymer electrolytes based on polymer blends, which are termed Li-polymer in F diluter (LPIFD). The Li-polymer (polymer-in-salt) ensures continuous Li-ion conduction channels and contributes to the solid electrolyte interphase (SEI), and the F diluter (inert fluorinated polymer) adds mechanical strength. Studies reveal that a single-phase LPIFD, which is based on a miscible polymer blend, lacks phase boundaries and forms an organic-less and LiF-rich SEI, effectively suppressing lithium dendrites. The single-phase LPIFD delivers ionic conductivity of 3.0 × 10−4 S cm−1, and enables the Li anode to reach a high coulombic efficiency of 99.1% and a critical current density of 3.7 mA cm−2. Furthermore, the ability to form an F-rich cathode electrolyte interphase allows LiNi0.8Co0.1Mn0.1O2||Li cells to achieve a cycle life of 450 cycles at a high operating voltage of 4.5 V. This design will inspire efforts to commercialize polymer electrolytes for high-energy Li-metal batteries. |
| نوع الوثيقة: |
redif-article |
| اللغة: |
English |
| DOI: |
10.1038/s41560-023-01443 |
| الإتاحة: |
https://ideas.repec.org/a/nat/natene/v9y2024i4d10.1038_s41560-023-01443-0.html |
| رقم الأكسشن: |
edsrep.a.nat.natene.v9y2024i4d10.1038.s41560.023.01443.0 |
| قاعدة البيانات: |
RePEc |
