1. Interface engineering strategy construction of covalent organic framework for promoting highly reversible zinc metal.
- Author
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Liu, Penggao, Guo, Jia, Gao, Shasha, Zeng, Peng, Zhang, Qu, Wang, Tao, Wu, Dongling, and Liu, Kaiyu
- Subjects
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ENERGY storage , *ZINC ions , *CHEMICAL reactions , *ION migration & velocity , *SURFACE states , *ZINC , *IONIC conductivity - Abstract
By means of zincophilic regulation and protection of covalent organic framework (COF), uniform Zn ion deposition can be induced to inhibit dendrite growth and prevent chemical corrosion reactions. Moreover, abundant zincophilic sites and excellent zinc ion conduction pathway in the interfacial layer of COF can optimize the zinc ion transfer kinetics between electrolyte and Zn anode, thus inducing uniform Zn ion migration, nucleation, dissolution/plating. To realize the efficient and stable utilization of zinc anode. [Display omitted] Zn-ion energy storage devices will play important roles in the future energy storage field. However, Zn-ion device development suffers significantly from adverse chemical reactions (dendrite formation, corrosion, and deformation) on the Zn anode surface. Zn dendrite formation, hydrogen evolution corrosion, and deformation combine to degrade Zn-ion devices. Zincophile modulation and protection using covalent organic frameworks (COF) inhibited dendritic growth by induced uniform Zn ion deposition, which also prevented chemical corrosion. The Zn@COF anode circulated stably for more than 1800 cycles even at high current density in symmetric cells and maintained a low and stable voltage hysteresis. This work explains the surface state of the Zn anode and provides information for further research. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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