Composite materials for paper electrodes and paper electrodes and paper batteries made of them

Abstract

The invention provides a coating material used for a paper electrode, the paper electrode produced by the coating material, and a paper battery. A graphene conducting paper is prepared by a carbon material, a paper pulp and an auxiliary agent with mass ratio of 5-10: 34-57: 6-9; wherein the nano carbon material at least comprises graphene, and the auxiliary agent is one or more selected from modified starch, anionic polyacrylamide, polyvinyl alcohol and carboxymethyl cellulose. The coating material used in the field of the paper battery has the advantages of increasing specific capacity, increasing stable battery performance, and increasing the battery life.

Description

Technical field

[0001] The present invention relates to the field of battery materials, in particular, to a composite material used for paper electrodes and paper electrodes and paper batteries made thereof. Background technique

[0002] The weight, inflexibility, capacity, life and other issues of the battery have always hindered the further portability of electronic products. Paper batteries help reduce the weight of electronic products, extend product life, and give the battery a certain degree of flexibility, which can promote each other with flexible and portable electronic products.

[0003] The use of mature paper technology and the use of conductive paper as current collectors and electrodes provide a low-cost, light-weight and efficient energy storage idea. At present, only the United States, Israel, Finland, Sweden and other countries in the world have achieved certain research and development results in this field. Paper batteries are mainly based on fiber paper as a c...