Reversible Electrochemical Energy Storage Based on Zinc-Halide Chemistry.

ABSTRACT: The development of rechargeable Zinc-ion batteries (ZIBs) has been hindered by the lack of efficient cathode materials due to the strong binding of divalent zinc ions with the host lattice. Herein, we report a strategy that eliminates the participation of Zn²⁺ within the cathode chemistry. The approach involves the use of composite cathode materials that contain Zn halides (ZnCl₂, ZnBr₂, and ZnI₂) and carbon (graphite or activated carbon), where the halide ions act both as charge carriers and redox centers while using a Zn²⁺-conducting water-in-salt gel electrolyte. The use of graphite in the composite electrode produced batterylike behavior, where the voltage plateau was related to the standard potential of the halogen species. When a

SUBMITTER: Ejigu A 

PROVIDER: S-EPMC8041251 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature