Abstract
Dendrite-like three-dimensional (3D) MgCo 2 O 4 /C nanofibers were fabricated by using a simple single-needle electrospinning method and adjusting the carbonization temperatures. The dendrite-like 3D MgCo 2 O 4 /C nanofibers are composed of 1D MgCo 2 O 4 /C nanofibers as trunks and secondary carbon nanowires/nanotubes as branches. The diameters of the 1D MgCo 2 O 4 /C nanofiber trunks and carbon nanotube/nanowire branches are approximately 500 nm and 20–40 nm, respectively; the lengths of these branches are approximately 200–500 nm. The dendrite-like 3D MgCo 2 O 4 /C nanofibers possess a large specific surface area of 314.027 g/m 2 and excellent electrochemical performance for supercapacitor owing to their unique structural features. The growth mechanism of the dendrite-like 3D nanofibers was also investigated.
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