High-efficiency oxygen evolution catalyzed by Sn–Co–Ni phosphide with oriented crystal phases

The resulting SnPi@CoP–Ni 5 P 4 /NCF shows an excellent electrocatalytic performance of OER, which is indicated by a low overpotential of 364 mV for transferring j 600 and a low activity decay (2.1%) for the pushed j 100 for 50 h.