Unlock instant, AI-driven research and patent intelligence for your innovation.

Lithium-ion secondary battery and its electrolyte

A secondary battery and electrolyte technology, applied to secondary batteries, circuits, electrical components, etc., can solve the problem that the low-temperature internal resistance has not been significantly reduced, improve high-temperature cycle performance and high-temperature storage performance, and reduce low-temperature DC internal resistance. The effect of resistance

Active Publication Date: 2018-10-26
CONTEMPORARY AMPEREX TECH CO
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method improves the high-temperature storage performance, discharge capacity and cycle performance of the lithium-ion secondary battery, but the low-temperature internal resistance of the lithium-ion secondary battery has not been significantly reduced

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 secondary battery and its electrolyte
  • Lithium-ion secondary battery and its electrolyte
  • Lithium-ion secondary battery and its electrolyte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Preparation of the positive electrode sheet of the lithium-ion secondary battery

[0034] The positive electrode active material lithium nickel cobalt manganese oxide (LiNi 1 / 3 co 1 / 3 mn 1 / 3 o 2 ), the conductive agent Super-P, and the binder PVDF were dissolved in the solvent N-methylpyrrolidone at a mass ratio of 96:2.0:2.0 and mixed evenly to make a positive electrode slurry, and then the positive electrode slurry was evenly coated on the aluminum foil of the positive electrode current collector On, the coating amount is 0.0194g / cm 2 , followed by drying at 85°C, cold pressing, trimming, cutting, and slitting, and then drying at 85°C for 4 hours under vacuum conditions, welding the positive tabs, and making a positive electrode sheet of a lithium-ion secondary battery that meets the requirements .

[0035] (2) Preparation of the negative electrode sheet of the lithium-ion secondary battery

[0036] Negative electrode active material artificial graphite, con...

Embodiment 2

[0042] Lithium-ion secondary batteries were prepared according to the method of Example 1, except that in the preparation of the electrolyte of lithium-ion secondary batteries (i.e. step (3)), the additive was 0.5% of the total mass of the electrolyte of lithium-ion secondary batteries N,N-dimethylfluorosulfonamide (first additive).

Embodiment 3

[0044] Lithium-ion secondary batteries were prepared according to the method of Example 1, except that in the preparation of the electrolyte of lithium-ion secondary batteries (i.e. step (3)), the additive was 3% of the total mass of the electrolyte of lithium-ion secondary batteries N,N-dimethylfluorosulfonamide (first additive).

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
thicknessaaaaaaaaaa
widthaaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The present invention provides a lithium ion secondary battery and an electrolyte thereof. The lithium ion secondary battery electrolyte comprises: a non-aqueous organic solvent; a lithium salt dissolved in the non-aqueous organic solvent; and an additive, wherein the additive comprises a first additive, the first additive is N,N-dialkylfluorosulfonamide having a structure represented by a formula I, R1 and R2 are independently selected from C1-C4 alkyl, and the mass of the first additive is 0.01-15% of the total mass of the lithium ion secondary battery electrolyte. The lithium ion secondary battery comprises the lithium ion secondary battery electrolyte. The lithium ion secondary battery of the present invention has characteristics of good high-temperature cycle performance, good high-temperature storage property and low low-temperature direct current internal resistance. The formula I is defined in the specification.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a lithium-ion secondary battery and an electrolyte thereof. Background technique [0002] Lithium-ion secondary batteries are green, high-energy and environmentally friendly batteries that appeared in the 1990s. They have the advantages of high voltage, small size, light weight, high specific energy, no memory effect, no pollution, small self-discharge, and long life. It is widely used in portable electronic products such as telephones, notebook computers, video cameras, and digital cameras. With the upgrading of the functions of portable electronic products and the development of electric vehicles, higher requirements are placed on the performance of lithium-ion secondary batteries. In order to meet the requirements of portable electronic products and electric vehicles for sustainable operation, normal use in high and low temperature environments, fast charging and long servi...

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): H01M10/0567H01M10/0525
CPCY02E60/10
Inventor 冯绍伟付成华
Owner CONTEMPORARY AMPEREX TECH CO
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com