Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Lithium-ion battery electrolyte

A lithium-ion battery and electrolyte technology, applied in the field of materials, can solve problems such as failure to meet requirements, and achieve good capacity retention, good cycle performance, and low cost

Active Publication Date: 2013-11-27
轻工业化学电源研究所 +1
View PDF3 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, additives such as 1,3-propane sultone, fluoroethylene carbonate, and pyrimidine structure compounds are usually used, but although the above-mentioned additives can improve the high-temperature performance and cycle performance to a certain extent, when reaching 85 ℃ high temperature, still can not meet the requirements

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 electrolyte
  • Lithium-ion battery electrolyte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] in an argon-filled glove box (H 2 O6 ) in which, then 1 wt% of (3-isocyanopropyl) trimethoxysilane and 2 wt% of PS were added to the electrolyte.

[0024] Inject the electrolyte solution into a 1200mAh lithium cobaltate / natural graphite polymer battery, charge and discharge the battery at 0.1C to form, and then charge and discharge at 1C for 10 weeks, store the battery at 85°C for 48 hours, and test its thickness, Capacity retention rate, capacity recovery rate. The results are shown in Table 1.

Embodiment 2

[0026] in an argon-filled glove box (H 2 O6 ) in it, and then add 2wt% (3-isocyanopropyl) trimethoxysilane and 2wt% PS to the electrolyte.

[0027] The above electrolytic solution was charged and discharged under the same conditions as in Example 1, and then a high-temperature storage experiment was carried out under the same conditions as in Example 1. The results are shown in Table 1.

Embodiment 3

[0029] in an argon-filled glove box (H 2 O6 ) in which, then 3wt% of (3-isocyanopropyl) trimethoxysilane and 2wt% of PS were added to the electrolyte.

[0030] The above electrolytic solution was charged and discharged under the same conditions as in Example 1, and then a high-temperature storage experiment was carried out under the same conditions as in Example 1. The results are shown in Table 1.

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

No PUM Login to View More

Abstract

The invention relates to a lithium-ion battery electrolyte. The lithium-ion battery electrolyte consists of a lithium salt, a solvent and additives, wherein the additives consist of an additive A and an additive B, the additive A accounts for 0.01-10wt% of the electrolyte, the additive B accounts for 0.01-8wt% of the electrolyte. The structural formula of the additive A is shown in the specification, wherein R1, R2, R3 are independent C1-C3 alkyl, and R4 is an alkyl with a C1-C5 linear chain or branched chain; the additive B is selected from one or more of 1,3-propanesultone, propenyl-1,3-sulfonic lactone and methylene methanedisulfonate. The lithium-ion battery electrolyte provided by the invention has good circulation at a high temperature of 85 DEG C, ensures that a battery also has good capacity retention ratio when being stored at a high temperature, fully meets the application requirement of a lithium-ion battery in certain new fields, and is strong in operability and low in cost.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to an electrolyte solution of a lithium ion battery. Background technique [0002] Since the concept of lithium-ion batteries was put forward in the early 1890s and its commercial application was realized, lithium-ion batteries have developed rapidly. In the early days of lithium-ion batteries, they were mainly applied to mobile phones, MP3, notebook computers, power tools, aircraft models, etc. In recent years, small electrical appliances have been gradually applied to electric bicycles, electric vehicles, electric buses, energy storage batteries and other fields. [0003] With the expansion of the application field of lithium-ion batteries, the requirements for high-temperature performance of lithium-ion batteries are also getting higher and higher. In terms of electrolytes, traditional electrolytes are difficult to meet the corresponding requirements, and some innov...

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 Applications(China)
IPC IPC(8): H01M10/0567
CPCY02E60/12Y02E60/10
Inventor 甘朝伦郑军伟袁翔云钱臻程陈晓琴李怀明王婷婷赵世勇方剑慧
Owner 轻工业化学电源研究所
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com