Solid-state battery cell, preparation method thereof and energy storage device

A technology for energy storage devices and solid-state batteries, which is applied in the manufacture of electrodes, solid electrolytes, and electrolyte batteries. Energy density, reduced occupied space, and low internal resistance

Pending Publication Date: 2022-02-08
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing solid-state batteries still have problems such as interface problems caused by solid-solid contact inside the battery, low battery cell voltage, and immature preparation processes, which limit the development and application of solid-state batteries.

Method used

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  • Solid-state battery cell, preparation method thereof and energy storage device
  • Solid-state battery cell, preparation method thereof and energy storage device
  • Solid-state battery cell, preparation method thereof and energy storage device

Examples

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preparation example Construction

[0063] Yet another embodiment provides the preparation method of the solid-state battery, the preparation method comprising the following steps:

[0064] (1) Preparation of solid-state battery cells, the preparation process can be found in figure 1 : prepare a flexible solid electrolyte membrane 3, coat positive electrode slurry 1 and negative electrode slurry 2 respectively on both sides of the solid electrolyte membrane, and obtain the solid battery unit 6 after drying, and the solid battery unit 6 includes positive electrodes 4, Negative electrode 5 and flexible solid electrolyte membrane 3;

[0065] (2) Preparation of solid-state batteries, the preparation process see figure 2 : the surface of the first current collector 7 is coated with a conductive pressure-sensitive adhesive 8, and then the first current collector coated with the conductive pressure-sensitive adhesive is laminated with the solid-state battery unit 6 described in step (1), and the first current collect...

Embodiment 1

[0067] This embodiment provides a solid-state battery cell and a preparation method thereof, the solid-state battery cell includes 20 solid-state battery cells, and the solid-state battery cell includes a positive electrode, a negative electrode, and a solid electrolyte between the positive electrode and the negative electrode membrane, the length of the solid electrolyte membrane exceeds the edge of the positive electrode and the negative electrode by 2 μm, a first current collector is arranged between adjacent solid-state battery cells, the material of the first current collector is aluminum, and one side of the first current collector It is connected to the positive electrode in the solid-state battery unit, and the other side of the first current collector is connected to the negative electrode in the solid-state battery unit. A second current collector is provided on the outermost side of the solid-state battery unit, and the material of the second current collector is stai...

Embodiment 2

[0072] This embodiment provides a solid-state battery cell and a preparation method thereof. The solid-state battery cell includes 50 solid-state battery cells, and the solid-state battery cell includes a positive electrode, a negative electrode, and a solid electrolyte between the positive electrode and the negative electrode. membrane, the length of the solid electrolyte membrane exceeds the edge of the positive electrode and the negative electrode by 3 μm, and a first current collector is arranged between adjacent solid-state battery cells, the material of the first current collector is aluminum-copper alloy, and the first current collector One side is connected to the positive electrode in the solid-state battery unit, the other side of the first current collector is connected to the negative electrode in the solid-state battery unit, and the outermost side of the solid-state battery unit is provided with a second current collector. The material of the second current collect...

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Abstract

The invention provides a solid-state battery cell and a preparation method thereof and an energy storage device. The solid-state battery cell comprises at least two solid-state battery units, and each solid-state battery unit comprises a positive electrode, a negative electrode and a solid-state electrolyte membrane located between the positive electrode and the negative electrode; a first current collector is arranged between every two adjacent solid-state battery units, one side of the first current collector is connected with a positive electrode in the solid-state battery unit, the other side of the first current collector is connected with a negative electrode in the solid-state battery unit, and a second current collector is arranged on the outermost side of the solid-state battery unit. The solid-state battery cell prepared by the invention has the advantages of high voltage, small internal resistance, high capacity, high capacity retention ratio, high energy density, large overcurrent area, high integration efficiency and the like.

Description

technical field [0001] The invention belongs to the technical field of solid-state batteries, and relates to a solid-state battery cell, a preparation method thereof, and an energy storage device. Background technique [0002] As an energy storage device with high energy, light weight, and high charging efficiency, lithium-ion batteries have been widely used in the fields of electronic products, daily necessities, and vehicles. However, the current commercial lithium-ion batteries usually use flammable and explosive organic electrolytes, which cannot meet people's safety requirements for batteries, and their energy density has reached the limit, and all-solid-state batteries that replace organic electrolytes with solid electrolytes are expected to become The safest alternative to lithium-ion batteries on the market today. [0003] CN110233298A discloses a preparation method of an all-solid-state lithium-ion battery. It stacks negative electrode current collectors, negative ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/058H01M10/0525H01M4/04
CPCH01M10/058H01M10/0525H01M4/0407H01M2300/0082H01M2300/0068H01M2300/0091Y02E60/10Y02P70/50
Inventor 翟喜民姜涛别晓非陈慧明
Owner CHINA FIRST AUTOMOBILE
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