Zeolitic Imidazolate Frameworks as Zn²⁺ Modulation Layers to Enable Dendrite-Free Zn Anodes.

ABSTRACT: Zinc (Zn) holds great promise as a desirable anode material for next-generation rechargeable batteries. However, the uncontrollable dendrite growth and low coulombic efficiency of the Zn plating/stripping process severely impede further practical applications of Zn-based batteries. Here, these roadblocks are removed by using in situ grown zeolitic imidazolate framework-8 (ZIF-8) as the ion modulation layer to tune the diffusion behavior of Zn²⁺ ions on Zn anodes. The well-ordered nanochannels and N species of ZIF-8 can effectively homogenize Zn²⁺ flux distribution and modulate the plating/stripping rate, ensuring uniform Zn deposition without dendrite growth. The Zn corrosion and hydrogen evolution are also alleviated by the insulating nature of ZIF-8, resulting in hi

SUBMITTER: Liu X 

PROVIDER: S-EPMC7610278 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature