Nonaqueous electrolyte solution for secondary batteries and nonaqueous electrolyte secondary battery
A technology of non-aqueous electrolyte and secondary battery, which is applied in the field of non-aqueous electrolyte for secondary battery and non-aqueous electrolyte secondary battery, can solve the problems of insufficient battery resistance battery characteristics and insufficient properties, and achieve improvement Charge and discharge characteristics, improve thermal stability, and prevent deterioration
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0111] [Preparation of Electrolyte Solution]
[0112] Using LiPF 6 as an electrolyte. A solvent composed of a mixture containing 30% by volume of ethylene carbonate and 70% by volume of ethyl methyl carbonate was used. Dissolve LiPF in this solvent 6 It was adjusted to 1.0 mol / l, and a cyclic amide compound composed of N-acylsulfonate was added as an additive for forming an ion-conductive film on the electrode. In Example 1-1, 1.0% by weight of 3,6-dimethyl-3,4-dihydro-1,2,3- Thiazin-4-one 2,2-dioxide, in Example 1-2, 1.0% by weight of 6-methyl-3,4-dihydro-1,2 ,3- Thiazin-4-one 2,2-dioxide lithium salt, in Example 1-3, 1.0% by weight of 3-fluoro-6-methyl-3,4- Dihydro-1,2,3- Thiazin-4-one 2,2-dioxide, in Examples 1-4, 1.0% by weight of 5-fluoro-3-methyl-1,2,3- Thiazin-4-one 2,2-dioxide lithium salt, in Examples 1-5, 1.0% by weight of 6-methyl-3,4-dihydro-1 was added to 100% by weight of the solvent as a whole ,2,3- Thiazin-4-one 2,2-dioxide to obtain an electroly...
Embodiment 2-1~2-8
[0135] Regarding the fabricated examples 2-1 to 2-8, batteries were produced by the same method as in example 1-1, and 3,6-dimethyl-3,4-dihydro-1,2,3- The content of thiazin-4-one 2,2-dioxide was set to the amount shown in Table 2.
[0136] [Table 2]
[0137]
[0138] EC: ethylene carbonate
[0139] EMC: ethyl methyl carbonate
[0140] As shown in Table 2, the reaction resistance at low temperature increases with 3,6-dimethyl-3,4-dihydro-1,2,3- As the content of thiazin-4-one 2,2-dioxide increased, the resistance value decreased and showed a tendency to increase after showing a minimum value. In addition, the expansion rate at high temperature increases with 3,6-dimethyl-3,4-dihydro-1,2,3- The content of thiazin-4-one 2,2-dioxide increased and its swelling rate decreased. Therefore, according to the 3,6-dimethyl-3,4-dihydro-1,2,3- Examples 2-2 to 2-7 in which the content of thiazin-4-one 2,2-dioxide is set to be 0.05% by weight or more and 10% by weight or less, co...
Embodiment 3-1~3-3
[0142] In Example 3-1, except for 3,6-dimethyl-3,4-dihydro-1,2,3- In addition to thiazin-4-one 2,2-dioxide, 0.5% by weight of 2-acryloyloxyethyl isocyanate is added to the electrolyte composition. In Example 3-2, 0.5% by weight of 1, The electrolyte composition of 1-bis(acryloyloxymethyl) ethyl isocyanate, in embodiment 3-3, adopts the composition of electrolyte adding 0.5% by weight of 2-methacryloyloxyethyl isocyanate, except Otherwise, batteries were manufactured in the same manner as in Example 1-1, and the results of measuring the reaction resistance at low temperature and high temperature characteristics are shown in Table 3.
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