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- Title
Hierarchically Nanostructured Solid‐State Electrolyte for Flexible Rechargeable Zinc–Air Batteries.
- Authors
Xu, Mi; Dou, Haozhen; Zhang, Zhen; Zheng, Yun; Ren, Bohua; Ma, Qianyi; Wen, Guobin; Luo, Dan; Yu, Aiping; Zhang, Luhong; Wang, Xin; Chen, Zhongwei
- Abstract
The construction of safe and environmentally‐benign solid‐state electrolytes (SSEs) with intrinsic hydroxide ion‐conduction for flexible zinc–air batteries is highly desirable yet extremely challenging. Herein, hierarchically nanostructured CCNF‐PDIL SSEs with reinforced concrete architecture are constructed by nanoconfined polymerization of dual‐cation ionic liquid (PDIL, concrete) within a robust three‐dimensional porous cationic cellulose nanofiber matrix (CCNF, reinforcing steel), where plenty of penetrating ion‐conductive channels are formed and undergo dynamic self‐rearrangement under different hydrated levels. The CCNF‐PDIL SSEs synchronously exhibit good flexibility, mechanical robustness, superhigh ion conductivity of 286.5 mS cm−1, and decent water uptake. The resultant flexible solid‐state zinc–air batteries deliver a high‐power density of 135 mW cm−2, a specific capacity of 775 mAh g−1 and an ultralong cycling stability with continuous operation of 240 hours for 720 cycles, far outperforming those of the state‐of‐the‐art solid‐state batteries. The marriage of biomaterials with the diversity of ionic liquids creates enormous opportunities to construct advanced SSEs for solid‐state batteries.
- Subjects
SOLID electrolytes; CELLULOSE fibers; STORAGE batteries; REINFORCED concrete; ADDITION polymerization
- Publication
Angewandte Chemie, 2022, Vol 134, Issue 23, p1
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202117703