High Entropy Metallic-High Entropy Nonmetallic Community as High Performance Electrocatalysts for Oxygen Evolution Reaction and Oxygen Reduction Reaction

A unique high entropy metallic–high entropy nonmetallic community (HEM–HENMC) in which five metals (Cr, Mn, Fe, Co and Ni) and five non-metals (C, N, O, P and S) co-exist is fabricated as efficient electrocatalyst by a high entropy precursor method.