Abstract

HighlightsUltrathin P and Fe co-doped NiSe2 nanosheets supported on modified Ni foam are synthesized, which shows desirable bifunctional electrocatalytic hydrogen evolution reaction (HER)/hydrazine oxidation reaction (HzOR) performance in hydrazine-assisted water electrolysis and Zn-Hz battery.The coexistence of P and Fe heteroatoms induces an accelerated “2 + 2” reaction mechanism with a two-step HER process and a two-step HzOR step.

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