SYNTHESIS OF Co3O4, NiO NANOPARTICLES WITHMESOPOROUS STRUCTURE AND THEIRELECTROCHEMICAL CAPACITIVE BEHAVIORS

摘要

Mesoporous Co304, NiO nanoparticles were prepared using KIT-6, SBA-15 as templatesand Co(NO3)2.6H20, Ni(NO3)2.6H20 as precursors. X-ray diffraction and SEADindicated that the samples had crystalline walls. N2 adsorption-desorption analysisindicated that the samples had high BET surface areas and pore volume. Electrochemicalcapacitive properties of the mesoporous metal oxides were examined by cyclicvoltammetry and galvanostatic charge-discharge measurements. The results showed thatthe mesoporous metal oxides had a higher specific capacitance and better capacitivebehavior than the conventional metal oxide.