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

Application of dioxazolone derivative in battery electrolyte

A technology of azlactone and its derivatives, which is applied in the field of application of azlactone derivatives in battery electrolytes, can solve the problems of battery capacity loss, battery performance degradation, and increased manufacturing costs, and achieve inflation rate Low, increased storage performance, long cycle life effect

Pending Publication Date: 2022-01-07
SHIJIAZHUANG SAN TAI CHEM CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solvent structure of these positive electrode materials changes under high voltage, and the transition metal is easy to dissolve and deposit on the negative electrode. In addition, the commonly used electrolyte usually decomposes at a voltage higher than 4V, producing gas, thereby will lead to a decrease in battery performance
In order to solve the above problems, researchers usually carry out surface protection coating or doping on the positive electrode material to improve the cycle performance under high voltage, but these methods are often accompanied by the loss of battery capacity, and the manufacturing process is cumbersome and the manufacturing cost increases.

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
  • Application of dioxazolone derivative in battery electrolyte
  • Application of dioxazolone derivative in battery electrolyte
  • Application of dioxazolone derivative in battery electrolyte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The battery electrolyte includes LiPF with a mass ratio of 15:84.99:0.01 6 , butyl trifluoroacetate and 3-trifluoromethyl-1,4,2-dioxazol-5-one (purity above 99.5%), the water content in the obtained battery electrolyte is 28ppm, and the acid value is 36ppm.

Embodiment 2

[0020] Take propylene carbonate, methyl propionate and methyl trifluoroacetate with a volume ratio of 30:40:30 and mix them to obtain an organic solvent;

[0021] Take LiBF with a weight ratio of 1:2 4 and LiSO 3 CF 3 together as a lithium salt;

[0022] Take 3-trifluoromethyl-1,4,2-dioxazol-5-one and 3-(2,3,4,5,6-pentafluorophenyl)-1,4 in a weight ratio of 1:1 , 2-dioxazolone-5-one is jointly used as a dioxazolone derivative;

[0023] The battery electrolyte includes lithium salts, organic solvents and dioxazolone derivatives (with a purity of more than 99.5%) in a mass ratio of 18:80:2. The water content in the battery electrolyte is 30ppm, and the acid value is 39ppm.

Embodiment 3

[0025] Mix ethylene carbonate, dimethyl carbonate, ethyl methyl carbonate, diethyl carbonate and ethyl trifluoroacetate with a volume ratio of 10:20:30:10:30 to obtain an organic solvent;

[0026] Take LiClO with a weight ratio of 1:2:1 4 , LiN(CF 3 SO 2 ) 2 and LiC(CF 3 SO 2 ) 3 together as a lithium salt;

[0027] Take 3-trifluoromethyl-1,4,2-dioxazol-5-one and 3-(2,3,4,5,6-pentafluorophenyl)-1,4 in a weight ratio of 2:1 , 2-dioxazolone-5-one is jointly used as a dioxazolone derivative;

[0028] The battery electrolyte includes lithium salts, organic solvents and dioxazolone derivatives (purity above 99.5%) in a mass ratio of 15.6:83:1.4. The water content in the battery electrolyte is 31ppm, and the acid value is 39ppm.

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 discloses application of a dioxazolone derivative in a battery electrolyte, and belongs to the technical field of battery electrolyte additives. The dioxazolone derivative is added into the battery electrolyte as an additive, and the dosage of the dioxazolone derivative is 0.01-6% of the mass of the battery electrolyte. The prepared battery electrolyte added with the dioxazolone derivative is high in charging and discharging efficiency and good in cycle performance, and the capacity retention rate can reach 95.1% or above under the condition of 60 DEG C after 300 times of charging and discharging cycles at 1C; and particularly, the low-temperature (-40 DEG C) discharge efficiency of 80.41% or above can be ensured while the high-temperature cycle performance of a lithium battery is improved, the storage performance of the battery can be improved, and other performances of the lithium battery are not influenced.

Description

technical field [0001] The invention relates to the technical field of battery electrolyte additives, in particular to the application of dioxazolone derivatives in battery electrolyte. Background technique [0002] Recently, there has been increasing interest in energy storage technologies. As energy storage technology extends to devices such as cellular phones, camcorders, notebook computers, personal computers, and electric vehicles, the demand for high energy density batteries used as energy sources for such electronic devices is also increasing. Lithium ion secondary batteries are one of the most satisfactory batteries, and various studies for their improvement are currently being actively conducted. [0003] Among the currently used secondary batteries, the lithium secondary battery developed in the early 1990s includes an anode made of a carbon material capable of intercalating or extracting lithium ions, a cathode made of a lithium-containing oxide, and a A non-aqu...

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
CPCH01M10/0567Y02E60/10
Inventor 杨世雄赵光华高山林胜赛李庆占邢艳召刘鹏田丽霞张茜张民彭鹏鹏郝俊侯荣雪王军葛建民武利斌闫彩桥许晓丹闫朋飞
Owner SHIJIAZHUANG SAN TAI CHEM CO LTD
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