A kind of composite material with starch as carbon-based load, preparation method and application thereof
A composite material and starch technology, which is applied in the preparation/purification of carbon, hybrid capacitor electrodes, cobalt oxide/cobalt hydroxide, etc., can solve the problems of insufficient mass transfer capacity and gaps, and achieve uniform product morphology, easy material, The effect of enhancing electrical conductivity
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[0038] An embodiment of the present invention provides a method for preparing a composite material with starch as a carbon-based load, which includes the following steps:
[0039] S1. Uniformly mixing the starch solution and the cobalt source solution to obtain a mixed solution; wherein the cobalt source solution is an aqueous solution containing a cobalt compound.
[0040] In this embodiment, the starch solution is used as a conductive 3D carbon network and mixed with other heteroatom-containing precursors to obtain a nanocomposite electrode material with a special structure and excellent performance. Optionally, the starch and the cobalt source can be dissolved in deionized water respectively to obtain a starch solution and a cobalt source solution, which are evenly stirred to obtain a mixed solution. By adjusting the concentration of the starch solution, the viscosity of the starch solution can be changed, and then the pore size of the carbon template obtained after carboni...
Embodiment 1
[0054] This embodiment provides a method for preparing a composite material with starch as a carbon-based load, comprising the following steps:
[0055] S1. Add starch and deionized water with a mass ratio of 3:1 into a beaker and mix evenly to obtain a starch solution with a mass concentration of 75 wt%. 4.37 g of cobalt nitrate hexahydrate was dissolved in deionized water and uniformly stirred and dissolved to obtain a 0.15 mol / L cobalt source solution. The starch solution and the cobalt source solution are uniformly mixed in a mass ratio of 3:1 to obtain a mixed solution;
[0056] S2. Put the mixed solution in a crucible, transfer the crucible to a muffle furnace, and take it out after a carbonization reaction at 500° C. for 0.5 h to obtain a carbon template;
[0057] S3. Put the carbon template in the reactor, add 2 / 3 of the volume of the reactor with deionized water, then react at 120° C. for 12 hours, rapidly cool and dry the reaction product to obtain a composite mater...
Embodiment 2
[0059] This embodiment provides a method for preparing a composite material with starch as a carbon-based load, comprising the following steps:
[0060] Steps S1 and S2 of this embodiment are the same as in Embodiment 1;
[0061] S3. Put the carbon template in the reactor, add 2 / 3 of the volume of the reactor with deionized water, then react at 150° C. for 12 hours, cool the reaction product rapidly, and dry to obtain a composite material.
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