writer：Hua Chen, Guohua Jiang, Weijiang Yu; Depeng Liu, Yongkun Liu, Lei Li, Qin Huang
keywords：composite; microstructure; hydrothermal; electrical properties
source：期刊
specific source：MRS Communications
Issue time：2017年

Abstract: The novel 3D rambutan-like NiCo₂O₄ microspheres have been successfully coated onto surface of carbon nanofibers (CNFs) to form NiCo2O4-CNFs hybrids. The composition and microstructure of NiCo₂O₄-CNFs were characterized by field emission scanning electronmicroscopy (FE-SEM), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and X-ray diffractometer (XRD). The obtained NiCo₂O₄-CNFs exhibited a specific capacity of 160 mAh/g at 1 mA/cm² in 2 M KOH aqueous solution. The specific capacity gradually increases with the increasing of cycles. And after 3000 cycles, the specific capacity still can be remained over 90%.