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- Title
A Multifunctional Artificial Interphase with Fluorine‐Doped Amorphous Carbon layer for Ultra‐Stable Zn Anode.
- Authors
Wang, Han; Chen, Yuejiao; Yu, Huaming; Liu, Wen; Kuang, Guichao; Mei, Lin; Wu, Zhibin; Wei, Weifeng; Ji, Xiaobo; Qu, Baihua; Chen, Libao
- Abstract
Building an artificial interphase layer for tackling uncontrollable Zn dendrites and serious side reactions is a highly desirable strategy, but it is often hampered by the limited Zn2+ transport. Here, a stable fluorine‐doped amorphous carbon (CF) artificial layer is constructed on a Cu current collector (CF‐Cu) via facile carbonization treatment of a fluoropolymer coating to realize underlying Zn deposition. As evidenced experimentally and theoretically, this inorganic CF layer with ionic conductivity and electronic insulation successfully triggers dendrite‐free Zn deposition at the CF‐Cu interface with preferred Zn(002) crystal plane stacking parallel to the substrate surface, thus greatly promoting the inhibition of Zn‐dendrites and blocking of interfacial side reactions. The introduced fluorine atoms as abundant zincophilic sites play an important role in driving fast zinc‐ion transfer kinetics, which can partly convert into ZnF2 as an artificial solid Zn2+ conductor to further guide uniform Zn deposition. Consequently, the CF‐Cu electrode enables high reversibility with 99% coulombic efficiency and a long cycling stability of 1900 cycles at 2 mA cm–2. The integrated CF‐Cu@Zn anode achieves up to 2200 h cycles with a low voltage polarization. This study provides inspiration for the design of artificial interphase layers for stable nondendritic metal batteries.
- Subjects
AMORPHOUS carbon; INTERFACIAL reactions; ZINC; IONIC conductivity; ANODES
- Publication
Advanced Functional Materials, 2022, Vol 32, Issue 43, p1
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.202205600