3D printing method of lithium battery

A 3D printing, lithium battery technology, applied in the direction of lithium battery, battery electrode, non-aqueous electrolyte battery, etc., can solve the problems of open circuit, selection of positive and negative materials isolation printing method, lithium storage capacity attenuation, etc., to achieve high ionic and electronic Conductivity, novel preparation method, and the effect of shortening the diffusion distance
CN104409774AActive Publication Date: 2015-03-11FUZHOU UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
FUZHOU UNIV
Publication Date
2015-03-11

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Abstract

The invention relates to a 3D printing method of a lithium battery. The method comprises the following steps: firstly, positive and negative slurry and diaphragm slurry required for 3D printing are prepared; secondly, each slurry is respectively printed into positive and negative electrodes of a lithium battery and an electrode diaphragm layer positioned between the positive and negative electrodes; thirdly, under the protection of argon in a test-tube furnace, heat treatment is carried out to prepare an annular electrode composite material assembled by overlapping the positive electrode, the diaphragm layer and the negative electrode; and finally, the annular electrode composite material is transferred into a glove box for packaging so as to obtain an annular lithium ion battery formed by successively overlapping the cathode, the diaphragm and the anode. The preparation method is novel, and the technology is simple, accurate and controllable. The prepared material has a special structure formed by successively overlapping the cathode, the diaphragm and the anode and has large specific surface area. Each cathode, diaphragm and anode annular material itself forms a miniature lithium ion battery. Diffusion distance of lithium ion in the material is shortened greatly, and corresponding diffusion velocity is improved. The lithium ion battery has high ionic and electronic conductivity.
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Description

technical field

[0001] The invention relates to a 3D printing method of a lithium battery, belonging to the field of nanometer energy storage materials. Background technique

[0002] With the depletion of traditional energy sources, lithium-ion secondary batteries have received extensive attention as a representative of new energy sources. At the same time, as the main power source of mobile communication equipment and portable electronic equipment, lithium-ion battery has become a research hotspot at home and abroad because of its advantages such as high output voltage, no memory, and high energy density. However, traditional Li-ion batteries based on planar electrodes generally have problems such as low specific surface area, limited energy storage density, and severe electrode polarization.

[0003] In recent years, with the rise of nanotechnology and 3D printing technology, nanotechnology and 3D printing technology have been expanded to military, electronics, medicine, ...

Claims

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