Preparation method of graphene lithium ion battery aqueous conductive foil
A lithium-ion battery and graphene technology, applied in the field of lithium-ion batteries, can solve problems such as emissions, health effects of workers, environmental pollution, etc., and achieve the effects of simple preparation, excellent electrical conductivity and thermal conductivity
Pending Publication Date: 2020-07-07
东莞市智元新材料科技有限公司 +1
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Problems solved by technology
A large amount of organic solvents are used in the preparation process, whether it is pulping or printing, or subsequent further applications, due to the discharge of organic solvents and other harmful substances, it will cause serious pollution to the environment and have a serious impact on the health of workers
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0019] In order to further understand the features, technical means and specific objectives and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with specific embodiments.
[0020] The embodiment of the present invention discloses a preparation method of a graphene lithium-ion battery water-based conductive foil, specifically as follows:
[0021] S1: Prepare graphene and deionized water into graphene slurry with a solid content of 0.01% to 85%. Dissolve the binder into a solution, or use the finished liquid binder directly;
[0022] S2: emulsify graphene paste and liquid binder according to the amount required by the conductive foil printing paste formula to prepare graphene water-based conductive paste;
[0023] S3: Print the graphene water-based conductive paste described in S2 on copper foil or aluminum foil by gravure printing, print a 0.1 μm to 2 μ printing layer on both sides of the copper foil o...
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Abstract
The invention relates to a preparation method of a graphene lithium ion battery aqueous conductive foil. The preparation method comprises: S1, preparing graphene slurry with the solid content of 0.01-85% from graphene and deionized water; dissolving the binder into a dissolving solution, or directly using a finished product liquid binder; S2, performing liquid emulsification on the graphene slurryand a liquid binder according to the amount required by a conductive foil printing slurry formula to obtain graphene water-based conductive slurry; and S3, printing the graphene water-based conductive paste obtained in the step S2 onto a copper foil or an aluminum foil in an intaglio printing manner, and respectively printing 0.1-2 [mu]m printing layers on two surfaces of the copper foil or the aluminum foil to obtain the graphene water-based conductive foil. No organic solvent is used in the preparation process, and no pollution is caused to the environment. The graphene is fully applied tothe lithium ion battery pole piece, and the performance of the material is fully exerted, so that the conductive foil has excellent electrical conductivity and thermal conductivity.
Description
technical field [0001] The invention relates to the field of lithium ion batteries, in particular to a method for preparing a graphene lithium ion battery water-based conductive foil in the field of graphene lithium ion batteries. Background technique [0002] Lithium-ion battery is a secondary battery (rechargeable battery) that mainly relies on the movement of lithium ions between the positive and negative electrodes to work. During the charging and discharging process, Li+ intercalates and deintercalates back and forth between the two electrodes: when charging, Li+ is deintercalated from the positive electrode, intercalated into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true during discharge. [0003] With the continuous improvement of power performance requirements of electric vehicles, high capacity, low impedance, and high power have become the key requirements at present. Among them, the low...
Claims
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IPC IPC(8): H01M10/0525H01M4/1393H01M4/04H01M4/62
CPCC01B32/182H01M4/0404H01M4/1393H01M4/625H01M10/0525Y02E60/10
Inventor 李智邓明能
Owner 东莞市智元新材料科技有限公司