A lithium ion battery pole piece, its preparation method and lithium ion battery

A lithium-ion battery and pole piece technology, applied in battery electrodes, electrode manufacturing, electrode collector coating, etc., can solve the problem that the gel state electrolyte cannot infiltrate the pole piece, etc.

Active Publication Date: 2020-09-15
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the above-mentioned various problems caused by the inability of the gel state electrolyte to infiltrate the pole piece, the present invention provides a lithium ion battery pole piece, its preparation method and lithium ion battery

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A lithium ion battery pole piece, its preparation method and lithium ion battery
  • A lithium ion battery pole piece, its preparation method and lithium ion battery
  • A lithium ion battery pole piece, its preparation method and lithium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] Example 1 Preparation of positive electrode plate ① of lithium ion battery

[0088] The porous material involved in this embodiment is a microporous ceramic; the electrode material is a positive electrode material. The positive electrode material is lithium cobalt oxide. The gel electrolyte is a gel electrolyte for lithium ion batteries.

[0089] 1) prepare the mixed membrane material for the upper and lower layers of the storage electrolyte layer;

[0090] 2) coating the surface of the current collector with the mixed film material for the lower layer prepared in step 1), heat treating the lower layer, cooling down and cooling;

[0091] 3) Cool and cool the mixed film material for the upper layer prepared in step 1), coat the surface of the lower layer of the pole piece obtained in step 2), stand and dry.

[0092] Step 1) The preparation of the mixed membrane material for the lower layer of the electrolyte layer includes: a porous material, an electrode material, a ...

Embodiment 2

[0109] Example 2 Preparation of negative pole piece ① of lithium ion battery

[0110] The steps and parameters not mentioned in this embodiment are the same as those in Embodiment 1. The porous material involved is a microporous ceramic; the electrode material is a negative electrode material. The negative electrode material is carbon nanotubes. The gel electrolyte is the same as in Example 1.

[0111] 1) prepare the mixed membrane material for the upper layer and the lower layer of the storage electrolyte layer;

[0112] 2) coating the surface of the current collector with the mixed film material for the lower layer prepared in step 1), heat treating the lower layer, cooling down and cooling;

[0113] 3) Cool and cool the mixed film material for the upper layer prepared in step 1), coat the surface of the lower layer of the pole piece obtained by the treatment in step 2), stand and dry.

[0114]Step 1) The preparation of the mixed membrane material for the lower layer of ...

Embodiment 3

[0131] Example 3 Preparation of positive electrode plate ② of lithium ion battery

[0132] The porous material involved in this embodiment is macroporous alumina; the electrode material is a positive electrode material. The positive electrode material is lithium iron phosphate. The gel electrolyte is a gel electrolyte for lithium ion batteries.

[0133] 1) prepare the mixed membrane material for the upper and lower layers of the storage electrolyte layer;

[0134] 2) coating the surface of the current collector with the mixed film material for the lower layer prepared in step 1), heat treating the lower layer, cooling down and cooling;

[0135] 3) Cool and cool the mixed film material for the upper layer prepared in step 1), coat the surface of the lower layer of the pole piece obtained in step 2), stand and dry.

[0136] Step 1) The preparation of the mixed membrane material for the lower layer of the electrolyte layer includes: a porous material, an electrode material, a ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
pore sizeaaaaaaaaaa
particle diameteraaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a lithium ion battery pole piece, a preparation method thereof and a lithium ion battery, and relates to the technical field of lithium ion battery preparation. The battery pole piece comprises a current collector and an electrolyte storage layer, wherein the storage electrolyte layer is located in the current collector A membrane layer on the surface containing porous material, electrode material and gel-state electrolyte. Using the pole piece to prepare a lithium-ion battery with a gel electrolyte can directly improve the energy density and charging speed of the lithium-ion battery.

Description

technical field [0001] The invention relates to the technical field of lithium ion battery preparation, in particular to a lithium ion battery pole piece, a preparation method thereof and a lithium ion battery. Background technique [0002] Lithium-ion batteries are widely used in various fields of today's social life because of their high voltage, high specific energy, long cycle life, good safety performance, small self-discharge, and fast charging speed. The essence of lithium-ion batteries is a secondary battery, that is, a rechargeable battery. The charging and discharging process mainly relies on Li + Works by moving between positive and negative electrodes: when charging, Li + Deintercalation from the positive electrode, moving through the electrolyte to the negative electrode diaphragm, and then embedding the negative electrode. After charging, the negative electrode is in a lithium-rich state; during discharge, the above process is reversed, and the same is true f...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/131H01M4/133H01M4/1391H01M4/1393H01M4/04H01M10/0525
CPCH01M4/0404H01M4/131H01M4/133H01M4/1391H01M4/1393H01M10/0525Y02E60/10
Inventor 高锃
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap