دورية أكاديمية
Electroactive polymeric nanofibrous composite to drive in situ construction of lithiophilic SEI for stable lithium metal anodes
| العنوان: | Electroactive polymeric nanofibrous composite to drive in situ construction of lithiophilic SEI for stable lithium metal anodes |
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| المؤلفون: | Ai-Long Chen, Nan Shang, Yue Ouyang, Lulu Mo, Chunyang Zhou, Weng Weei Tjiu, Feili Lai, Yue-E Miao, Tianxi Liu |
| المصدر: | eScience, Vol 2, Iss 2, Pp 192-200 (2022) |
| بيانات النشر: | KeAi Communications Co. Ltd., 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Mechanical engineering and machinery LCC:Electronics |
| مصطلحات موضوعية: | Electroactive polymer nanofibers, Electrospinning, Li+ flux regulation, Dendrite-free, Lithium metal battery, Mechanical engineering and machinery, TJ1-1570, Electronics, TK7800-8360 |
| الوصف: | Uncontrolled lithium dendrite growth hinders the practical application of lithium metal batteries (LMBs). Herein, we report a novel Li+ flux distributor achieved by placing an electroactive polyvinylidene fluoride/polymethyl methacrylate (PVDF/PMMA) composite nanofiber interlayer on a current collector, inducing uniform lithium deposition to mitigate the dendrite problem. Specifically, the released PMMA reacts with Li+ to form abundant C–O–Li bonds and generate in situ a stable lithiophilic PMMA-Li solid electrolyte interphase layer. Theoretical calculations reveal that polar C–F groups in the PVDF framework and lithiophilic PMMA-Li provide homo-dispersed Li+ migration pathways with low energy barriers. Consequently, uniform Li nucleation is achieved at the molecular level, resulting in ultrahigh cycling stability with dendrite-free Li deposition at 5 mA cm−2 and 5 mAh cm−2 for over 500 h. The PVDF/PMMA ∼ Li || LiFePO4 (LFP) full cell presents an increased rate capacity of 110 mAh g−1 at 10 C. In addition, a soft-package battery demonstrates a high energy density of 289 Wh kg−1. This work provides a facile design for stable lithium metal anodes to promote the practical use of LMBs and other alkali metal batteries. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2667-1417 |
| Relation: | http://www.sciencedirect.com/science/article/pii/S2667141722000118; https://doaj.org/toc/2667-1417 |
| DOI: | 10.1016/j.esci.2022.02.003 |
| URL الوصول: | https://doaj.org/article/7dd58d4afb994992bef8d8f89fe44c5d |
| رقم الأكسشن: | edsdoj.7dd58d4afb994992bef8d8f89fe44c5d |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 26671417 |
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| DOI: | 10.1016/j.esci.2022.02.003 |