Excellent electrocatalytic performance of CuCo2S4 nanowires for high-efficiency overall water splitting in alkaline and seawater media

CuCo 2 S 4 nanowires were synthesized via hydrothermal and air annealing. They showed excellent HER performance with low overpotentials of 86.2 mV in KOH and 91.2 mV in seawater. For the OER, the overpotential decreased from 282.8 mV in KOH to 255.6 mV in seawater.