Three-dimensional graphene/ carbon nano tube based molybdenum disulfide/cobaltous sulfide composite material electrocatalyst as well as preparation method and application thereof
A carbon nanotube, molybdenum disulfide technology, applied in electrodes, electrolysis process, electrolysis components, etc., to achieve the effect of prolonging cycle life, simple preparation process, and improving catalytic activity
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[0027] Sample preparation: Measure 20ml of graphene oxide (GO) solution with a concentration of 1mg / ml, add 4mg of hydroxylated multi-walled carbon nanotubes (CNTs-OH), after ultrasonication for two hours, add 80mg of ascorbic acid, 200 mg of Sodium molybdate water and 98 mg of cobalt chloride hexahydrate, the molar ratio of molybdenum source content to cobalt source content is 2:1, and finally 400 mg of thiourea is added sonicated until completely dissolved, and moved to a 100 ml reaction kettle. Put the reactor into an oven, set the temperature at 180 °C, and react for 24 h. After the reaction, cool down, filter the product in the reactor with suction, wash three times with distilled water to obtain a hydrogel-like solid substance, and freeze-dry to obtain a three-dimensional columnar structure of graphene / carbon nanotube-based molybdenum disulfide / cobalt sulfide composite Electrocatalysis (GC4 / MoS 2 / CoS).
[0028] Electrocatalytic application: 2 mg of sample is dispersed...
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