Preparation method of environmentally friendly flexible lithium-ion battery cathode framework material

Abstract

The invention provides a preparation method of an environment-friendly flexible lithium-ion battery positive electrode framework material. The method comprises the following steps: providing polyurethane sponge; providing an aniline monomer, a sulfuric acid solution and ammonium persulfate; adding the aniline monomer into the sulfuric acid solution, and adding the ammonium persulfate into a mixedsolution of the sulfuric acid and the aniline monomer so as to obtain a first mixed solution; adding the polyurethane sponge into the first mixed solution so as to obtain a second mixed solution; reacting the second mixed solution at the temperature of 8-15 DEG C for 8-12 hours, and drying to obtain modified polyurethane sponge; carbonizing the modified polyurethane sponge to obtain carbonized modified polyurethane sponge; ageing the carbonized modified polyurethane sponge; preparing a graphene oxide solution; adding the aged carbonized modified polyurethane sponge into the graphene oxide solution, and stirring and drying so as to obtain a modified polyurethane sponge / graphene oxide composite material; performing heat treatment on the modified polyurethane sponge / graphene oxide composite material so as to obtain a primary modified polyurethane sponge / graphene oxide composite material; and performing secondary ageing on the primary modified polyurethane sponge / graphene oxide composite material.

Description

technical field [0001] The invention relates to the technical field of environment-friendly materials, in particular to a preparation method of an environment-friendly flexible lithium-ion battery cathode frame material. Background technique [0002] Human activities and social development are inseparable from energy. Coal, oil and natural gas account for a large proportion of the energy supply structure. As the use of fossil energy continues to increase, environmental pollution problems are becoming more and more serious. At the same time, it takes a long time to form fossil fuels, and their reserves on the earth are limited. With the continuous growth of energy demand, the problem of energy shortage is becoming more and more serious, and the development of new energy is imminent. New energy includes solar energy, geothermal energy, wind energy, etc. The development of new energy is difficult and requires high equipment for storage and use. As an energy storage device, th...

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Problems solved by technology

[0002] The development of human activities and society is inseparable from energy. Coal, oil and natural gas account for a large proportion of the energy supply structure. With the increasing use of fossil energy, the environmental pollution problems are becoming more and more serious. At the same time, it takes a long time for fossil fuels to form, and their reserves on the earth are limited

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