One-step sintering synthesis of a robust self-supported MoSe 2 /Ni 3 Se 2 heterostructure electrode for efficient hydrogen evolution at a high current density

This work presents a robust MoSe 2 /Ni 3 Se 2 heterostructure electrode fabricated via one-step sintering. The electrode delivers low overpotenial of 341 mV at 1000 mA cm −2 and maintains stable operation for 200 h at 800 mA cm −2 .