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Graphene conductive paper, paper battery and application thereof

A graphene paper and graphene technology, applied in the direction of non-aqueous electrolyte storage batteries, batteries, battery electrodes, etc., can solve the problems that the superiority of nano-carbon materials cannot be fully utilized, the influence of electrical conductivity is not considered, and the electrical conductivity of electrodes is not significantly improved, etc. problems, to achieve the effects of improving mechanical strength and chemical stability, improving comprehensive electrical conductivity, and uniform resistance adjustability

Inactive Publication Date: 2017-03-01
JINAN SHENGQUAN GROUP SHARE HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, patent applications such as CN103966907A, CN102619128B, and CN102169999B have all studied the application of nano-carbon materials in paper batteries or paper electrodes. The electrode active material does not consider the effect of the mixing effect of carbon nanomaterials and pulp on the electrical conductivity of paper batteries, resulting in an insignificant improvement in the electrical conductivity of the electrode, and the inability to give full play to the superiority of carbon nanomaterials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A paper battery:

[0048] Nanocellulose is used as raw material to prepare fiber pulp, and then fiber paper is obtained through papermaking process as separator paper.

[0049] Disperse biomass graphene, carbon nanotubes and lithium iron phosphate in ethanol according to the ratio of 2:1:7, and add 0.5% of the polymer dispersant-polyvinylpyrrolidone to the mass of the above mixture to make the solution solid When the content reaches 10% and no sedimentation occurs, the carbon material can evenly cover the lithium iron phosphate particles after being fully stirred and dried. The dried composite positive electrode material was mixed with fiber pulp and polyvinyl alcohol at a ratio of 4:5:1 and paper was made to obtain graphene / active material composite positive electrode paper.

[0050] Mix biomass graphene, carbon nanotubes, fiber pulp, and polyvinyl alcohol in a ratio of 1:3:5:1 and make paper to obtain carbon material composite negative electrode paper.

[0051] The ...

Embodiment 2

[0053] A paper battery:

[0054] Nanocellulose is used as raw material to prepare fiber pulp, and then fiber paper is obtained through papermaking process as separator paper.

[0055] Disperse biomass graphene, carbon nanotubes and lithium iron phosphate in ethanol according to the ratio of 2:1:7, and add 0.5% of the polymer dispersant-polyvinylpyrrolidone to the mass of the above mixture to make the solution solid When the content reaches 10% and no sedimentation occurs, the carbon material can evenly cover the lithium iron phosphate particles after being fully stirred and dried. The dried composite positive electrode material was mixed with fiber pulp and polyvinyl alcohol at a ratio of 4:5:1 and paper was made to obtain graphene / active material composite positive electrode paper.

[0056] Mix biomass graphene, carbon nanotubes, fiber pulp, and polyvinyl alcohol in a ratio of 2:8:75:15 and make paper to obtain carbon material composite negative electrode paper.

[0057] Th...

Embodiment 3

[0059] A paper battery:

[0060] Nanocellulose is used as raw material to prepare fiber pulp, and then fiber paper is obtained through papermaking process as separator paper.

[0061] Disperse biomass graphene, carbon nanotubes and lithium iron phosphate in ethanol according to the ratio of 2:1:7, and add 0.5% of the polymer dispersant-polyvinylpyrrolidone to the mass of the above mixture to make the solution solid When the content reaches 10% and no sedimentation occurs, the carbon material can evenly cover the lithium iron phosphate particles after being fully stirred and dried. The dried composite positive electrode material was mixed with fiber pulp and polyvinyl alcohol at a ratio of 4:5:1 and paper was made to obtain graphene / active material composite positive electrode paper.

[0062] Mix biomass graphene, carbon nanotubes, fiber pulp, and polyvinyl alcohol in a ratio of 2:3:4:1 and make paper to obtain carbon material composite negative electrode paper.

[0063] The ...

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Abstract

The invention provides graphene conductive paper, a paper battery and application thereof. The graphene conductive paper is mainly prepared from 10-50 wt% of a carbon nano-material, 40-75 wt% of paper pulp and 8-18 wt% of an auxiliary agent. The carbon nano-material at least contains graphene. The auxiliary agent is one or more ingredients selected from a group consisting of modified starch, anionic polyacrylamide, polyvinyl alcohol and carboxymethyl cellulose. The graphene conductive paper has advantages of raising specific capacity, stabilizing battery performance and prolonging battery life and the like when applied in the field of paper battery.

Description

technical field [0001] The invention relates to the field of conductive materials, in particular to a graphene conductive paper, a paper battery and applications thereof. Background technique [0002] The weight, inflexibility, capacity, and lifespan of batteries have always hindered the further portability of electronic products. Paper batteries help reduce the weight of electronic products, prolong product life, and endow batteries with a certain degree of flexibility, which plays a role in promoting each other with flexible and lightweight electronic products. [0003] Utilizing the well-established paper technology, the use of conductive paper as current collectors and electrodes offers an idea for low-cost, lightweight and efficient energy storage. At present, only a few countries in the world, such as the United States, Israel, Finland, and Sweden, have achieved certain research and development results in this field. Paper batteries are mainly based on fiber paper as...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/62H01M4/131H01M4/136H01M10/052H01M10/0563
CPCH01M4/131H01M4/136H01M4/362H01M4/62H01M10/052H01M10/0563H01M2220/30H01M2300/002Y02E60/10
Inventor 张金柱袁征刘顶
Owner JINAN SHENGQUAN GROUP SHARE HLDG
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