High-Performance Supercapacitor Electrode Materials of Mo_(1-x)CoxS2 Nanoparticles Prepared by Hydrothermal Method

摘要

Co-doped Mo_(1-x)CoxS2(x=0,0.1,0.3,0.5)nanoparticles with varying amounts of Co were compounded by hydrothermal channel.The microstructures of the samples were characterized.All the samples showed hexagonal structure,good crystallization,flower shape microspheres and agglomeration to a certain extent.Furthermore,the influence of Co doping on the electrochemical properties was evaluated by cyclic voltammetry(CV),galvanostatic charge-discharge(GCD),cycle stability and electrochemical impedance spectra(EIS).CV curves present quasi-triangular shapes with good symmetry,doped Mo_(1-x)CoxS2 nanoparticles exhibit better specific capacitance and excellent cyclic stability than that of MoS2 samples.The capacity ratios of MCS-3 electrodes maintains 96% of its premier capacitance after 3000 cycles.The remarkable electrochemical properties embodied in CV proof were proved via the GCD measurements.Nyquist spectra of doped Mo_(1-x)CoxS2 electrodes reveal lower resistance and perfect conductivity.This work reveals that Co doping can further effectively the electrochemical properties of MoS2 nanomaterials.