Electrolyte raw material composition, electrolyte, lithium ion secondary battery and preparation method thereof
A lithium-ion battery and raw material composition technology, applied in the direction of secondary batteries, organic electrolytes, non-aqueous electrolytes, etc., to achieve the effects of ensuring cycle performance, ensuring rate performance, and improving safety
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment approach
[0036] According to a preferred embodiment of the present invention, the acrylate is any one or more of the compounds shown in the following formula 1) and formula 2):
[0037]
[0038] Wherein, R in formula I) and formula II) 1 ~R 2 The number of carbon atoms contained in each is 0-3, preferably each is H, CH 3 、C 2 h 5 、C 3 h 7 、C 4 h 9 、C 6 h 5 、CF 3 、CF 3 CH 2 、CF 2 HCH 2 、CF 3 CF 2 、CF 2 HCF 2 CH 2 , OCH 2 CF 3 , any of the. Using the aforementioned preferred acrylate can improve the safety and durability of the electrolyte used in lithium-ion batteries.
[0039] According to a preferred embodiment of the present invention, the preferred acrylate is one or more of.
[0040] In the present invention, the non-aqueous organic solvent can be selected in a wide range, and the selection of the solvent should be reasonably matched to ensure that the electrolyte solution has a relatively low viscosity and relatively high electrical conductivity. C...
Embodiment 1
[0091] (1) Preparation of positive electrode sheet for lithium ion battery
[0092] The positive electrode active material nickel cobalt manganese lithium (LiNi 0.5 co 0.2 mn 0.3 o 2 ), the conductive agent super-P, and the binder PVDF are dissolved in the solvent N-methylpyrrolidone at a mass ratio of 96:2:2 and mixed evenly to process the positive electrode slurry, and then the positive electrode slurry is evenly coated on the current collector aluminum foil, Coating amount 0.040g / cm 2 , followed by drying at 120°C, cold pressing, cutting, slitting, and punching, and then drying at 85°C for 4 hours under vacuum conditions, welding the tabs, and making a positive electrode sheet of a lithium-ion battery that meets the requirements.
[0093] (2) Preparation of lithium-ion battery negative electrode sheet
[0094] Negative electrode active material artificial graphite, conductive agent super-P, thickener CMC, and binder SBR are dissolved in deionized water at a mass ratio ...
Embodiment 2-14
[0101] Examples 2 to 14 are used to illustrate the lithium-ion battery electrolyte, lithium-ion battery and preparation method thereof disclosed in the present invention, including most of the operating steps in Example 1. Except for the parameters in Table 1 below, other parameters are the same as in Example 1 unanimous.
[0102] Table 1
[0103]
[0104]
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