The development of electrocatalysts with high activity and low Tafel slope for overall water splitting has become a crucialchallenge to exploit the sustainable energy. Herein, we construct a Fe–Co–P–Gr catalyst on nickel foam (NF) support throughelectroless composite plating to realize the co-deposition of Fe–Co–P alloys and graphene quantum dots. Interestingly,graphene quantum dots exhibit obvious eff ects on electron mobility and active sites of Fe–Co–P–Gr/NF catalyst. In oxygenevolution reaction, the Fe–Co–P–Gr/NF catalyst exhibits a small overpotential of 230 mV at 10 mA cm −2 and fast kineticswith Tafel slope of 37.8 mV dec −1 . Meanwhile, the Fe–Co–P–Gr/NF also has a superior hydrogen evolution reaction performancein 1.0 M KOH. Compared with the Fe–Co–P alloys, the Fe–Co–P–Gr/NF both as the anode and cathode requireonly 1.58 V to reach a current density of 10 mA cm −2 . The successful preparation of Fe–Co–P–Gr/NF electrode throughelectroless composite deposition provides a new path to manufacture electrocatalysts for overall water splitting.
The development of electrocatalysts with high activity and low Tafel slope for overall water splitting has become a crucialchallenge to exploit the sustainable energy. Herein, we construct a Fe–Co–P–Gr catalyst on nickel foam (NF) support throughelectroless composite plating to realize the co-deposition of Fe–Co–P alloys and graphene quantum dots. Interestingly,graphene quantum dots exhibit obvious eff ects on electron mobility and active sites of Fe–Co–P–Gr/NF catalyst. In oxygenevolution reaction, the Fe–Co–P–Gr/NF catalyst exhibits a small overpotential of 230 mV at 10 mA cm −2 and fast kineticswith Tafel slope of 37.8 mV dec −1 . Meanwhile, the Fe–Co–P–Gr/NF also has a superior hydrogen evolution reaction performancein 1.0 M KOH. Compared with the Fe–Co–P alloys, the Fe–Co–P–Gr/NF both as the anode and cathode requireonly 1.58 V to reach a current density of 10 mA cm −2 . The successful preparation of Fe–Co–P–Gr/NF electrode throughelectroless composite deposition provides a new path to manufacture electrocatalysts for overall water splitting.