| 초록 |
Sodium-ion hybrid capacitors (SIHCs), as a next-generation energy storage device, are alluring increasing interest because of their high energy-power densities, long lifespan, and relatively low cost compared with Li-based energy storage materials. Especially, designing efficient battery-type anode materials for SIHCs is of enormous intention. Herein, we suggest Ni2P encapsulated with carbon nanofiber (Ni2P@CNF) via a facile electrospinning method as an anode material for high-performance SIC. The 3D network of carbon fiber interconnection delivers improved electrical conductivity and ion diffusivity. The carbon nanofiber wrapped Ni2P can efficiently relieve the repeated stress caused by volume change, which leads to superior stability. Scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman scattering, and transmission electron microscopy (TEM/HRTEM) were utilized to examine the material characterization of Ni2P/CNFs. For half cells, sodium metal as the reference and counter electrode. SIHCs full cells were coupling with an activated carbon (AC) cathode. |
