Ultrahigh Energy and Power Density in Ni–Zn Aqueous Battery via Superoxide-Activated Three-Electron Transfer

Abstract

Highlights Efficient activation of Ni electrode employs chronopotentiostatic superoxidation. Novel superoxide activation mechanism realizes the redox reaction with three-electron transfer (Ni ↔ Ni3+). As-prepared CPS-Ni||Zn batteries exhibit simultaneously ultrahigh energy and power densities.

Keywords

• Superoxide
• Multiple electron transfer
• Ni aqueous battery
• AIoT power source
• Wearable health monitoring