Lithium Ion Battery

A lithium-ion battery and separator technology, applied in the direction of batteries, battery electrodes, secondary batteries, etc., can solve problems that need to be improved, achieve the effects of improving electrochemical performance, improving overcharge safety, and overcoming poor oxidation resistance

Active Publication Date: 2021-08-06
CONTEMPORARY AMPEREX TECH CO
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still many deficiencies in the above-mentioned non-aqueous electrolyte. For example, in a high-voltage system, the cycle performance, storage performance and safety performance of the above-mentioned non-aqueous electrolyte need to be improved. Safety performance such as overcharge safety and hot box safety of ion batteries also needs to be improved

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
  • Lithium Ion Battery
  • Lithium Ion Battery
  • Lithium Ion Battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] (1) Preparation of non-aqueous electrolyte

[0056] Mix compound A1, ethyl methyl carbonate (EMC), and ethylene carbonate (EC) in a weight ratio of 60:35:5 as a non-aqueous solvent, and then dissolve 1.0mol / L LiPF 6 As a lithium salt, 2% DTD is then added to configure a non-aqueous electrolyte.

[0057] (2) Preparation of positive pole piece

[0058] The cathode active material LiNi 0.8 co 0.1 mn 0.1 o 2 , the conductive agent acetylene black, and the binder polyvinylidene fluoride (PVDF) at a weight ratio of 94:3:3 are fully stirred and mixed in the N-methylpyrrolidone solvent system, and then coated on the current collector Al foil and dried. Cold pressing to obtain the positive electrode sheet.

[0059] (3) Preparation of negative electrode sheet

[0060] Negative electrode active material artificial graphite, conductive agent acetylene black, binder styrene-butadiene rubber, thickener sodium carboxymethyl cellulose in a weight ratio of 95:2:2:1 are fully stir...

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
electrical conductivityaaaaaaaaaa
flash pointaaaaaaaaaa
Login to view more

Abstract

The invention provides a lithium ion battery, which comprises a positive pole piece, a negative pole piece, a separator and a non-aqueous electrolyte. The positive pole piece contains Li 1+x Ni a co b Me (1‑a‑b) o 2‑c Y c , ‑0.1≤x≤0.2, 0.8≤a<1, 0

Description

technical field [0001] The invention relates to the field of batteries, in particular to a lithium ion battery. Background technique [0002] Lithium-ion batteries are widely used in electric vehicles and consumer electronics due to their advantages such as high energy density, high output power, long cycle life and low environmental pollution. The current demand for lithium-ion batteries is: high voltage, high power, long cycle life, long storage life and excellent safety performance. [0003] Lithium-ion batteries currently widely use a non-aqueous electrolyte system using lithium hexafluorophosphate as a conductive lithium salt and cyclic carbonate and / or chain carbonate as a solvent. However, there are still many deficiencies in the above-mentioned non-aqueous electrolyte. For example, in a high-voltage system, the cycle performance, storage performance and safety performance of the above-mentioned non-aqueous electrolyte need to be improved. Safety performances such a...

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): H01M10/0569H01M10/0525
CPCH01M10/0525H01M10/0569H01M2300/0037H01M10/0568Y02E60/10H01M10/0567H01M4/525H01M4/1391H01M2300/0034H01M2220/20H01M2300/0022
Inventor 冯俊敏陈培培付成华梁成都
Owner CONTEMPORARY AMPEREX TECH CO
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