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All-solid-state film battery with high energy density and preparation method thereof

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

Active Publication Date: 2016-11-09
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 fluid layer on the surface of the substrate;

[0026] (3) Lithium titanate and lithium ...

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 fluid layer on the surface of the substrate;

[0034] (3) Lithium titanate and lithium...

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 fluid layer on the surface of the substrate;

[0042](3) Lithium titanate and lithium f...

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PUM

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Abstract

The invention discloses an all-solid-state film battery with high energy density. The all-solid-state film battery comprises a substrate material layer, a metal current collecting layer I, an anode active material layer, an electrolyte film layer, a cathode active material layer and a metal current collecting layer II, wherein the anode active material layer and the cathode active material layer are composed of a plurality of layers of composite films respectively, and are alternately grown through the vacuum deposition technology; the anode active material is formed by mixing lithium titanate with lithium ferrite; the cathode active material is formed by mixing lithium cobaltate with lithium manganate. The invention also discloses a preparation method of the all-solid-state film battery. The prepared all-solid-state film battery is high in energy density, good in stability and long in 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 Applications(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
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