We　report　a　facile　but　effective　approach　to　construct　a　highly　dispersed　diatomic　catalyst.　A　carbon-embedded　diatomic　Ni(2)catalyst　was　synthesized　from　carbon　black,　polyaniline　and　nickel(ii)　salts.　The　resulting　catalyst　exhibits　excellent　activity　for　the　CO(2)reduction　reaction　(CO2RR)　at　low　Ni　content　with　a　faradaic　efficiency　of　CO　over　95%　in　the　potential　range　from　-0.6　V　to　-1.0　Vvs.reversible　hydrogen　electrode　(RHE).　A　high　specific　current　density　of　37.2　A　mg(-1)Ni　was　recorded　at　-1.1　V,　among　the　highest　reported　values　for　Ni-based　electrocatalysts.