In situ visualization of interfacial processes at nanoscale in non-alkaline Zn-air batteries.

ABSTRACT: Zn-air batteries (ZABs) present high energy density and high safety but suffer from low oxygen reaction reversibility and dendrite growth at Zn electrode in alkaline electrolytes. Non-alkaline electrolytes have been considered recently for improving the interfacial processes in ZABs. However, the dynamic evolution and reaction mechanisms regulated by electrolytes at both the positive and Zn negative electrodes remain elusive. Herein, using in situ atomic force microscopy, we disclose that thin ZnO₂ nanosheets deposit in non-alkaline electrolyte during discharge, followed by the formation of low-modulus products encircled around them. During recharge, the nanosheets are completely decomposed, revealing the favorable reversibility of the O₂/ZnO₂ chemistry. Th

SUBMITTER: Wang J 

PROVIDER: S-EPMC11686246 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature