Lithium secondary battery
A lithium secondary battery and current collector technology, applied in the direction of secondary batteries, lithium storage batteries, battery electrodes, etc., to achieve the effects of small swelling, good charge-discharge cycle characteristics, and high capacity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment approach 1
[0034] The first lithium secondary battery of the present invention includes a positive electrode, a negative electrode, a nonaqueous electrolytic solution, and a separator. In addition, the above-mentioned positive electrode includes a current collector and a positive electrode mixture layer formed on the above-mentioned current collector, the above-mentioned positive electrode mixture layer contains a positive electrode active material, and the above-mentioned positive electrode active material contains a first lithium-containing composite oxide containing lithium and nickel. The molar ratio of the nickel to the lithium in the entire amount of the first lithium-containing composite oxide is 0.05 to 1.05. Moreover, the said non-aqueous electrolytic solution contains 0.5-20 mass % of the phosphonoacetate compound represented by following general formula (1).
[0035]
[0036] In the above general formula (1), R 1 , R 2 and R 3 Each independently represents an alkyl group...
Embodiment 1-1
[0217]
[0218] Aqueous ammonia whose pH was adjusted to about 12 by the addition of sodium hydroxide was added to the reaction vessel, and while it was vigorously stirred, the 3 / min, 6.6cm 3 The ratio of 2.4mol / dm / min is added dropwise using a quantitative pump 3 , 0.8mol / dm 3 , 0.8mol / dm 3The concentration contains a mixed aqueous solution of nickel sulfate, cobalt sulfate and manganese sulfate, and ammonia water at a concentration of 25% by mass to synthesize a co-precipitation compound (spherical co-precipitation compound) of Ni, Co and Mn. At this time, the temperature of the reaction solution was maintained at 50°C. In addition, in order to maintain the pH of the reaction solution at around 12, a 6.4mol / dm 3 Concentration of sodium hydroxide aqueous solution is added dropwise. In addition, in order to react in an inert atmosphere, 1dm 3 Nitrogen is blown in at a flow rate of / min.
[0219] The above coprecipitated compound was washed with water, filtered and drie...
Embodiment 1-2
[0241] A lithium secondary battery was produced in the same manner as in Example 1-1, except that triethylphosphonoacetate was added to the non-aqueous electrolytic solution in such an amount that the concentration became 0.5% by mass.
PUM
Property | Measurement | Unit |
---|---|---|
density | aaaaa | aaaaa |
density | aaaaa | aaaaa |
particle size | 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