Proton-selective coating enables fast-kinetics high-mass-loading cathodes for sustainable zinc batteries.

ABSTRACT: The pressing demand for sustainable energy storage solutions has spurred the burgeoning development of aqueous zinc batteries. However, kinetics-sluggish Zn²⁺ as the dominant charge carriers in cathodes leads to suboptimal charge-storage capacity and durability of aqueous zinc batteries. Here, we discover that an ultrathin two-dimensional polyimine membrane, featured by dual ion-transport nanochannels and rich proton-conduction groups, facilitates rapid and selective proton passing. Subsequently, a distinctive electrochemistry transition shifting from sluggish Zn²⁺-dominated to fast-kinetics H⁺-dominated Faradic reactions is achieved for high-mass-loading cathodes by using the polyimine membrane as an interfacial coating. Notably, the NaV₃O₈

SUBMITTER: Guo Q 

PROVIDER: S-EPMC10923785 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature