Plasma-reduced Co(OH)2 with activated hydrogen evolution and overall water splitting performance

Abstract

A low-temperature and time-efficient plasma reduction strategy is developed to accelerate the hydrogen evolution reaction (HER) and overall water splitting performance of Co(OH)₂. Superior HER activity (a small overpotential of 35 mV at 10 mA cm⁻²) and excellent overall water splitting performance (1.48 V at 10 mA cm⁻²) are achieved.