Reasonable design of a kind of non-noble metal catalyst with high catalytic performance

good stability and low cost is of great significance to realize the overall water splitting. Herein

a bottom-up method is proposed to synthesize NiFe layered double hydroxides (NiFe LDHs) coated sulfide/phosphide heterostructure on the nickel foam (Ni

3

S

2

-Ni

x

P

y

/NF@NiFe LDH) through hydrothermal method combined with electrodeposition. Low overpotentials of only 248 and 298 mV are required to achieve the current densities of 50 and 100 mA cm

−2

for OER. Meanwhile

the HER performance only needs 137 mV at a current density of 10 mA cm

−2

.