MoSe2 embedded in (NiCo)Se2 nanosheets to form heterostructure materials for high stability supercapacitors and efficient hydrogen evolution

A 3D heterojunction of (NiCo)Se 2 /MoSe 2 /NF with staggered nanosheet coverage is constructed. It exhibits expected energy density (55.99 Wh kg −1 ) and HER performance with an overpotential of 71.2 mV at 10 mA cm −2 and a Tafel slope of 67.3 mV dec −1 .