Synthesis and characterizations of the (FeCoNiCu)Ox electrocatalyst. (IMAGE)

Science China Press

Synthesis and characterizations of the (FeCoNiCu)Ox electrocatalyst.

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The (FeCoNiCu)Ox electrocatalyst was first prepared using the rapid Joule-heating method within a short duration at the temperature of 1100 K. XRD results suggest that the (FeCoNiCu)Ox electrocatalyst exhibits a characteristic pattern consistent with NiFe2O4 (PDF#10-0325), confirming its typical spinel structure. TEM image displays that the (FeCoNiCu)Ox electrocatalyst consists of many nanoparticles in tens of nanometers in diameter. The STEM and EDS elemental mapping images verify the homogeneous distribution of Fe, Co, Ni, Cu and O elements in the nanoparticles. The HR-TEM image of the (FeCoNiCu)Ox electrocatalyst mainly indexed to NiFe2O4 (311) and (400), which is in good agreement with the XRD results.

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