Cobalt atoms anchored on nitrogen-doped hollow carbon spheres for efficient electrocatalysis of oxygen reduction to H₂O₂

Abstract Electrochemical production of hydrogen peroxide (H 2 O ) from oxygen reduction reaction (ORR) is a promising alternative to the costly anthraquinone method. However, sluggish kinetics ORR on most electrocatalysts restricts its wide application. Therefore, exploring with high activity and selectivity for two–electron significant. Herein, cobalt atoms anchored nitrogen-doped hollow carbon spheres (Co–NHCS) are presented H electrosynthesis. The Co–NHCS catalyst exhibits excellent electrosynthesis performance in acidic media reactivity an potential 0.581 V at 1.0 mA cm −2 up 90%. Moreover, output assembled device reaches 2980 mg l −1 h Faraday efficiency. enhanced originates structure center sites Co introduction. This work affords facile strategy fabrication high-efficient carbon-based materials