High voltage electrolyte solution and lithium ion battery containing the same
An electrolyte and high-voltage technology, applied in secondary batteries, circuits, electrical components, etc., can solve the problems of rapid capacity loss and poor cycle performance of lithium-ion batteries, achieve excellent cycle performance, improve withstand voltage performance, and reduce hydrogen The effect of precipitation
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0024] The high-voltage electrolyte is prepared by the following steps: dissolve lithium hexafluorophosphate in vinylene carbonate under the effect of a magnetic field, stir for 0.5h, add chloroethylene carbonate, octamethylcyclotetrasiloxane and hexamethyldisilazane , ultrasonic vibration at room temperature for 4 hours, finally adding vitamin E, and ultrasonic vibration for 3 hours at -4°C to obtain a high-voltage electrolyte; wherein, the concentration of electrolyte in the electrolyte is 1.7mol / L, the frequency of ultrasonic vibration is 45Hz, and the strength of the magnetic field It is 2100GS, based on the total weight of the electrolyte, the amount of additives added is: 5% hexamethyldisilazane, 0.5% octamethylcyclotetrasiloxane, 3% vitamin E and 0.3% chlorine Vinyl carbonate.
Embodiment 2
[0026] The high-voltage electrolyte is prepared by the following steps: dissolving lithium tetrafluoroborate in a mixed solution of γ-butyrolactone and dipropyl carbonate under the effect of a magnetic field, and the volume ratio of γ-butyrolactone to dipropyl carbonate is 2:1, stirring for 2h, adding chloroethylene carbonate, octamethylcyclotetrasiloxane and hexamethyldisilazane, ultrasonic vibration at room temperature for 5h, finally adding vitamin E, ultrasonic vibration at 0°C for 4h, Obtain a high-voltage electrolyte; wherein, the concentration of the electrolyte in the electrolyte is 2.12mol / L, the frequency of the ultrasonic vibration is 50Hz, and the strength of the magnetic field is 2600GS, based on the total weight of the electrolyte, the addition of the additive is: 5.5% of six Methyldisilazane, 2.4% octamethylcyclotetrasiloxane, 4.1% vitamin E and 5% chloroethylene carbonate.
Embodiment 3
[0028] The high-voltage electrolyte is prepared by the following steps: LiAsF 6 Dissolve in diethyl carbonate under the effect of a magnetic field, stir for 3 hours, add chloroethylene carbonate, octamethylcyclotetrasiloxane and hexamethyldisilazane, ultrasonically vibrate for 6 hours at room temperature, and finally add vitamin E, in Ultrasonic vibration at 5°C for 4.5 hours to obtain a high-voltage electrolyte; wherein, the concentration of electrolyte in the electrolyte is 2.35mol / L, the frequency of ultrasonic vibration is 55Hz, and the strength of the magnetic field is 3200GS. Based on the total weight of the electrolyte, the amount of additives The addition amount is: 6.5% of hexamethyldisilazane, 3.5% of octamethylcyclotetrasiloxane, 5.2% of vitamin E and 10% of chloroethylene carbonate.
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
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