Fabrication method of novel micropore carbon-coating aluminum foil

An aluminum foil and microporous technology is applied in the field of preparation of a new type of microporous carbon-coated aluminum foil, which can solve the problems of poor wetting and film-forming performance, affecting the service life of batteries, etc., and achieves increased film-forming performance, good wetting effect, and improved conductivity. effect of ability

Inactive Publication Date: 2018-11-20
南通宇华新材料科技有限公司
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  • Abstract
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Problems solved by technology

However, the carbon-coated slurry in the prior art often has poor wetting and film-forming performance, which makes the carbon-coated aluminum foil produced seriously affect the service life of the battery

Method used

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Embodiment Construction

[0017] A clear and complete description will be made below in conjunction with technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0018] A preparation method of a novel microporous carbon-coated aluminum foil, comprising the following steps:

[0019] S1. Preparation of microporous aluminum foil: use mechanical processing to open holes on the surface of the aluminum foil, open equidistant and uniform through holes per unit area, and clean the aluminum foil after the through holes are opened, ultrasonic cleaning pool cleaning, and spraying once. After shower cleaning, primary drying, secondary spray cleaning and secondary drying, a crude porous ...

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Abstract

The invention discloses a fabrication method of a novel micropore carbon-coating aluminum foil. The fabrication method comprises the following steps of S1, fabricating a micropore aluminum foil; S2, performing thermal treatment on the micropore aluminum foil; S3, preparing a conductive carbon water-based material; S4, coating the micropore aluminum foil; and S5, drying, cleaning and winding to form a finished product. The employed carbon material is a compound in carbon black, a graphite flake or graphene has relatively good processing performance and conductivity; by adding the graphene intoa coating layer, the conductive capability is improved, and the scratching resistance and the flexibility are improved; and with the application of acrylic acid, polyurethane, epoxy resin, polyester and alkyd resin film formation agent, the film formation performance of the carbon coating material on a surface of the aluminum foil is improved; and by application of the film formation agent and thecorresponding additive NNO in a matching way, the novel micropore carbon-coating aluminum foil has certain wettability and has favorable wet effect.

Description

technical field [0001] The invention belongs to the technical field of carbon-coated aluminum foil preparation, and in particular relates to a preparation method of a novel microporous carbon-coated aluminum foil. Background technique [0002] my country's power lithium battery industry started late, but developed rapidly. Lithium batteries with lithium iron phosphate as the positive electrode material have the characteristics of high safety, good stability and long service life, and occupy most of the market share. The increase in market demand for electric vehicles puts forward requirements for power lithium batteries with high specific capacity, high rate and long service life. The positive current collector is one of the important factors affecting the performance of power batteries. Aluminum foil is usually used as the positive electrode collector of lithium batteries, but there are problems such as insufficient adhesion, poor wettability, and high contact resistance....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/058H01M4/66H01M4/80
CPCH01M4/661H01M4/663H01M4/667H01M4/80H01M10/058Y02E60/10Y02P70/50
Inventor 焦露萍吴子正
Owner 南通宇华新材料科技有限公司
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