Manufacturing method of 3D (three-dimensional) lithium batteries

A manufacturing method and technology of lithium batteries, applied in the direction of electrolytic storage battery manufacturing, primary batteries, and equipment for manufacturing primary batteries, etc., can solve the problems of low efficiency and high cost of three-dimensional lithium battery technology

Inactive Publication Date: 2016-11-09
SHENZHEN UNIV
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Problems solved by technology

[0005] The invention provides a method for manufacturing a three-dimensional lithium battery, which solves the technic

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  • Manufacturing method of 3D (three-dimensional) lithium batteries

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Embodiment Construction

[0020] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] Such as figure 1 As shown, a method for manufacturing a three-dimensional lithium battery provided by an embodiment of the present invention includes:

[0022] Step 101, configuring 3D printing electrode paste;

[0023] Among them, the cathode material powder (such as LiCoO 2 、LiFePO 4 , LiMn 2 o 4) and anode material powders (such as Li 4 Ti 5 o 12 , graphite) and organic solvent (1,4 dioxane), conductive agent (carbon black) and thickener / binder (polyvinyl alcohol PVA, sodium carboxymethyl cellulose CMC, etc.) according to the mass fraction Mix evenly, wherein the mass fraction of the electrode active material is 50%-80%, the mass fraction of the organic solvent is 20%-50%, the mass fraction of the conductive agen...

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Abstract

The invention relates to the technical field of lithium ion batteries and discloses a manufacturing method of 3D (three-dimensional) lithium batteries. The method comprises procedures as follows: preparation of 3D printing electrode slurry, treatment of the slurry, filtration of the slurry, loading of the printing slurry, pretreatment of a substrate, low-temperature direct-writing 3D printing, electrode freeze-drying, electrode sintering, battery package and electrolyte injection. The technological method is characterized in that cathode and anode slurry of the lithium batteries is printed in a low-temperature environment with a3D printing method and is freeze-dried at the low temperature. The manufacturing technological method of the 3D lithium batteries is suitable for preparation of the large-size, high-capacity and high-power 3D lithium batteries.

Description

technical field [0001] The invention relates to the technical field of lithium ion batteries, in particular to a method for manufacturing a three-dimensional lithium battery. Background technique [0002] Due to its high operating voltage, high energy density and long cycle life, lithium batteries have become an important electrochemical energy storage device in the fields of consumer electronics, electric vehicles, and industrial energy storage. The structure of the current lithium battery includes button type, cylindrical type, square structure and thin film lithium battery. The positive electrode and negative electrode structures of the above batteries are two-dimensional planar shapes. Even after winding, the positive and negative electrodes are still parallel, so the essence Generally speaking, they are all two-dimensional lithium batteries. The problem with this type of battery is the contradiction between energy density and power density. In order to increase the ene...

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Application Information

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IPC IPC(8): H01M6/00H01M10/058
CPCH01M6/005H01M10/058Y02E60/10Y02P70/50
Inventor 刘长勇劳长石肖崇梁库志喻
Owner SHENZHEN UNIV
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