▎ 摘　　要

NOVELTY - An ultra-thin carbon-coated amorphous/crystalline heterogeneous nickel-iron alloy nanomaterial has a core-shell structure including amorphous/crystalline heterogeneous nickel-iron alloy core and an ultra-thin graphene shell. The amorphous/crystalline heterogeneous nickel-iron alloy core is composed of an amorphous region and a crystalline region. USE - The ultra-thin carbon-coated amorphous/crystalline heterogeneous phase nickel-iron alloy nanomaterial is used in electrocatalytic oxygen evolution (claimed). ADVANTAGE - The ultra-thin carbon-coated amorphous/crystalline heterogeneous phase nickel-iron alloy nanomaterial has excellent catalytic activity and extremely high stability to electrocatalytic oxygen evolution. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the nanomaterial comprising preparing solid mixed precursor containing graphene oxide, nickel salt, and iron salt; and sealing solid mixed precursor and initiator in a glass bottle filled with argon gas and microwave irradiating for 6-15 seconds.