Non-aqueous electrolyte and lithium ion battery containing same
A non-aqueous electrolyte and lithium-ion battery technology, which is applied in the direction of secondary batteries, circuits, electrical components, etc., can solve the problems of limited battery performance improvement, and achieve a wide electrochemical window of the product, good negative electrode film-forming performance, and inhibition of reaction Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0023] The preparation method of the non-aqueous electrolyte provided by the present invention is a common method used by those skilled in the art, that is, to mix all components (including lithium salt, non-aqueous solvent and additives) uniformly, and the present invention is not particularly limited.
[0024] The present invention also provides a lithium-ion battery, including a casing, an electric core contained in the casing, and a non-aqueous electrolyte. The electric core includes a positive electrode, a negative electrode, and a separator between the positive electrode and the negative electrode, wherein the non-aqueous electrolyte The aqueous electrolyte is the non-aqueous electrolyte provided by the present invention. Compared with non-aqueous electrolytes using other common additives in the prior art, the non-aqueous electrolyte obtained by adding the specific additives in the same amount in the present invention can greatly improve the high-temperature performance o...
Embodiment 1
[0028] (1) Preparation of non-aqueous electrolyte
[0029] Mix ethylene carbonate (EC), diethyl carbonate (DEC), trimethylsilyl isocyanate (TMSIT), and triethyl orthoacetate (TEOA) at a mass ratio of 30:50:5:15 in the mixed solvent , adding the solute LiPF 6 , to make a non-aqueous electrolyte with a lithium salt content of 1.0 mol / L, denoted as S1.
[0030] (2) Preparation of Li-ion battery
[0031] LiCoO 2 , Conductive materials such as acetylene black, binder PVDF at 85:10:5 and an appropriate amount of NMP (N-methylpyrrolidone) are stirred into a slurry, which is applied to a 20 μm thick aluminum foil, dried and pressed to obtain a positive electrode sheet. The positive electrode piece is obtained after spot welding the tabs.
[0032] Mix graphite (type P15B) with SBR and CMC at a weight ratio of 100:3:2, and use deionized water as a solvent to obtain anode material paste. Apply it on a 12 μm thick copper foil, dry it, press it to obtain a negative electrode sheet, an...
Embodiment 2-7
[0035]Non-aqueous electrolytes S2-S7 and lithium-ion batteries S20-S70 were prepared in the same steps as in Example 1, the difference being that in step (1), trimethylsilyl isocyanate (TMSIT), orthoacetic acid The ratio of triethyl ester (TEOA) is shown in Table 1.
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