Ultra-thin N-doped-graphene encapsulated Ni nanoparticles coupled with MoO 2 nanosheets for highly efficient water splitting at large current density

Ultra-thin N-doped-graphene encapsulated Ni nanoparticles coupled with MoO ₂ nanosheets are prepared for HER and OER. As used for overall water splitting, it can work for 196 h at 1000 mA cm ⁻² .