Lithium ion battery
A technology of lithium-ion batteries and electrolyte salts, which is applied in the field of secondary batteries, can solve the problems of severe gas production caused by electrolyte side reactions, achieve the effects of improving battery cycle performance, improving rate charge and discharge performance, and avoiding side reactions
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0080] This embodiment is used to illustrate the lithium ion battery disclosed in the present invention and the preparation method thereof, including the following operation steps:
[0081] 1) preparation of non-aqueous electrolyte: mixing ethylene carbonate (EC), ethyl methyl carbonate (EMC) and dimethyl carbonate (DMC) by mass ratio as EC:EMC:DMC=2:1:7, Then add lithium hexafluorophosphate (LiPF 6 ) to a mass concentration of 12.5%, and then add the additives corresponding to the content in the table below. The amount of the additive is calculated as a percentage of the total mass of the electrolyte.
[0082] VC(%) FEC(%) Compound 1 (%) LiFSI (%) 1 10 0.25 2.5
[0083] 2) Preparation of positive plate
[0084] The cathode active material NCM811, conductive carbon black Super-P and binder polyvinylidene fluoride (PVDF) were mixed in a mass ratio of 93:4:3, and then dispersed in N-methyl-2-pyrrolidone (NMP) , the positive electrode slurry was obta...
Embodiment 2~9
[0092] Examples 2 to 9 are used to illustrate the lithium ion battery disclosed in the present invention and the preparation method thereof, including most of the operation steps in Example 1, and the differences are:
[0093] In the preparation steps of the non-aqueous electrolyte:
[0094] Based on the total mass of the non-aqueous electrolyte solution as 100%, the non-aqueous electrolyte solution was added with the components in the mass percentages shown in Examples 2 to 9 in Table 1.
[0095] In the preparation steps of the negative plate:
[0096] The coating weight, the compaction density and the specific surface area of the negative electrode active material shown in Examples 2 to 9 in Table 1 were used for preparation.
PUM
Property | Measurement | Unit |
---|---|---|
density | aaaaa | aaaaa |
specific surface area | aaaaa | aaaaa |
specific surface area | aaaaa | aaaaa |
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