VO2/Co(OH)2 nano composite material, preparation method thereof and supercapacitor

The invention discloses a VO2/Co(OH)2 nano composite material, a preparation method thereof and a supercapacitor, which belong to the field of supercapacitor electrode materials. According to the VO2/Co(OH)2 nano composite material, a VO2 nanowire is used as a base material, and nano lamellar Co(OH)2 nano particles are loaded. The preparation method comprises the following steps of: mixing the VO2nanowire and CoCl2.6H2O according to an impregnation molar ratio, adding water to dissolve, carrying out ultrasonic treatment, adding 0.05-5mol/L ammonia water, titrating with pure ammonia water until the pH value is 8-8.5, carrying out a settling reaction for 10-30 minutes, separating, and cleaning and drying the solid substance to obtain the VO2/Co(OH)2 nano composite material. According to themethod, the VO2 nanowire is used as a precursor, the VO2/Co(OH)2 nano composite material is prepared through an in-situ self-growth method, and then the VO2/Co(OH)2 nano composite material is used asa supercapacitor electrode