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A kind of preparation method of high energy density all-solid-state thin-film battery

A high-energy-density, thin-film battery technology, used in electrolyte battery manufacturing, battery electrodes, secondary batteries, etc., to achieve high energy density, tight integration, and good stability.

Active Publication Date: 2019-01-29
江华邦能电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, despite the above advantages, there are still many problems in the application process of all-solid-state lithium-ion batteries. How to further improve its energy density and service life has become a key issue.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A high-energy-density all-solid-state thin-film battery, the all-solid-state thin-film battery comprising a base material layer, a metal current collector layer, a negative electrode active material layer, an electrolyte film layer, a positive electrode active material layer, and a metal current collector layer; the negative electrode active material Both the positive electrode active material layer and the positive electrode active material layer are composed of multilayer composite thin films, which are alternately grown by vacuum deposition technology.

[0023] Its preparation method comprises the following steps:

[0024] (1) Select carbon as the base material layer, and mechanically polish the surface of the substrate with 500 mesh-3000 mesh sandpaper until mirror reflection can occur on the surface;

[0025] (2) Using magnetron sputtering technology to deposit a layer of metal current collecting layer on the surface of the substrate;

[0026] (3) Lithium titanate...

Embodiment 2

[0030] A high-energy-density all-solid-state thin-film battery, the all-solid-state thin-film battery comprising a base material layer, a metal current collector layer, a negative electrode active material layer, an electrolyte film layer, a positive electrode active material layer, and a metal current collector layer; the negative electrode active material Both the positive electrode active material layer and the positive electrode active material layer are composed of multilayer composite thin films, which are alternately grown by vacuum deposition technology.

[0031] Its preparation method comprises the following steps:

[0032] (1) Select silicon as the base material layer, and mechanically polish the surface of the substrate with 500 mesh-3000 mesh sandpaper until mirror reflection can occur on the surface;

[0033] (2) Using magnetron sputtering technology to deposit a layer of metal current collecting layer on the surface of the substrate;

[0034] (3) Lithium titanat...

Embodiment 3

[0038] A high-energy-density all-solid-state thin-film battery, the all-solid-state thin-film battery comprising a base material layer, a metal current collector layer, a negative electrode active material layer, an electrolyte film layer, a positive electrode active material layer, and a metal current collector layer; the negative electrode active material Both the positive electrode active material layer and the positive electrode active material layer are composed of multilayer composite thin films, which are alternately grown by vacuum deposition technology.

[0039] Its preparation method comprises the following steps:

[0040] (1) Select copper as the base material layer, and mechanically polish the surface of the substrate with 500 mesh-3000 mesh sandpaper until mirror reflection can occur on the surface;

[0041] (2) Using magnetron sputtering technology to deposit a layer of metal current collecting layer on the surface of the substrate;

[0042](3) Lithium titanate ...

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PUM

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Abstract

The invention discloses a high-energy-density all-solid thin film battery, which comprises a base material layer, a metal current collecting layer, a negative electrode active material layer, an electrolyte film layer, a positive electrode active material layer, and a metal current collecting layer; the negative electrode active material layer Both the positive electrode active material layer and the positive electrode active material layer are composed of multilayer composite films, which are alternately grown by vacuum deposition technology, wherein the negative electrode active material is a mixture of lithium titanate and lithium ferrite, and the positive electrode active material is lithium cobaltate and lithium manganate the mix of. The invention also discloses a preparation method of the all-solid film battery. The all-solid film battery prepared by the invention has high energy density, good stability and long service life.

Description

Technical field: [0001] The invention relates to the field of thin-film batteries, in particular to an all-solid-state thin-film battery with high energy density. Background technique: [0002] With the rapid development of the electronic information industry and micro-processing technology, special miniaturization requirements are put forward for the micro-energy required by it. Among them, all-solid-state thin-film lithium-ion secondary batteries have become the best choice for micro-battery system requirements due to their high energy density, strong safety, long cycle life, wide operating voltage and light weight. In addition, its solid-state thin-film lithium-ion battery has the following advantages: (1) Any shape can be designed according to the requirements of the product; (2) It can be assembled on substrates of different materials; (3) The preparation of thin-film batteries can be realized by standard deposition conditions ;Wide operating temperature window (-15-15...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/058H01M4/131H01M4/1391H01M10/0525
CPCH01M4/131H01M4/1391H01M10/0525H01M10/058Y02E60/10Y02P70/50
Inventor 付竹兰
Owner 江华邦能电子科技有限公司