Dual-structure-breaking electrolyte enables practical cadmium-metal battery.

ABSTRACT: High-energy aqueous metal batteries are promising candidates for the next-generation energy storage systems but face critical challenges of dendrite and corrosion in metal negative electrodes. To address these issues, we report an aqueous cadmium-metal battery employing a fast-kinetics structure-breaking electrolyte composed of CdCl₂ and NH₄Cl. The addition of NH₄Cl induces the formation of dual structure breakers, NH₄⁺ and tetrachlorocomplex ([CdCl₄]^2-), which facilitate fast charge transfer kinetics in aqueous cadmium-metal batteries and endow dendrite-free/corrosion-resistant capabilities to Cd negative electrodes. This tailored electrolyte realizes a convincing Coulombic efficiency (99.93%) for Cd plating/stri

SUBMITTER: Cui YF 

PROVIDER: S-EPMC12216936 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature