多孔钴酸锌的制备及超级电容性能研究

he preparation of porous ZnCo2O4 electrode active materials using hydrothermal method. The structure and morphology of the as-perpared materials were characterized by X-ray powder crystal diffraction (XRD), transmission electron microscope (TEM), scanning electron microscope (SEM) and N2 adsorption-disorption isothermal curve (BET) methods. As it shows, ZnCo2O4 have loose and porous mophology, together with a big specific surface area, making it favorable for the transportation of the ionic and thus show good electrical conductivity, the electrode active materials bear excellent eclectrochemical and capacitive properities. The electrochemical and battery life tests revealed that the specific capacitance reached 600 F/g at the current density of 2 A/g, and the capacitance of ZnCo2O4 electrode remained 88.21% after 2000 cycles, the electrode materials showe great cycling stability. As it has spherical and porous morphology, ZnCo2O4 can act as ligand compositing with other materials to synthesize electrode materials with superior electrochemical properities.