Slurry for negative electrode of lithium ion secondary battery, electrode for lithium ion secondary battery and manufacturing method thereof, and lithium ion secondary battery
A secondary battery and lithium-ion technology, which is applied to battery electrodes, secondary batteries, non-aqueous electrolyte battery electrodes, etc., can solve the problems of reduced cycle characteristics and achieve excellent adhesion and cycle characteristics
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0268] (1-1. Production of particulate polymer)
[0269] Put 30 parts of 1,3-butadiene, 4 parts of itaconic acid as an ethylenically unsaturated carboxylic acid monomer, 65 parts of styrene as an aromatic vinyl monomer into a 5MPa pressure vessel with a stirrer, as 1 part of 2-hydroxyethyl acrylate containing hydroxyl monomer, 4 parts of sodium dodecylbenzene sulfonate as emulsifier, 150 parts of ion-exchange water, and 0.5 part of potassium persulfate as polymerization initiator, after fully stirring , Heat to 50°C to initiate polymerization.
[0270] When the polymerization conversion rate reached 96%, cooling was performed to terminate the reaction, and a mixture containing a particulate polymer (SBR) as a binder was obtained. A 5% sodium hydroxide aqueous solution was added to the mixture containing the particulate polymer to adjust the pH to 8. After that, the unreacted monomer was removed by heating and reduced pressure distillation. Then, it is cooled to 30 degrees C or l...
Embodiment 2
[0290] In the above (1-1. Production of particulate polymer), the amount of 1,3-butadiene was changed to 20 parts, and the amount of styrene was changed to 75 parts.
[0291] In the above (1-3. Production of slurry for negative electrode), the amount of the 1% aqueous solution of carboxymethyl cellulose was changed to 0.97 parts in terms of solid content, and the amount of the aqueous solution containing the water-soluble polymer 1 It was changed to 0.03 part based on the amount of the water-soluble polymer 1.
[0292] Except for the above-mentioned matters, in the same manner as in Example 1, a slurry for a negative electrode, a negative electrode, and a lithium ion secondary battery were produced and evaluated.
Embodiment 3
[0294] In the above (1-1. Production of particulate polymer), the amount of 1,3-butadiene was changed to 33 parts, and the amount of itaconic acid was changed to 1 part.
[0295] In the above (1-3. Production of slurry for negative electrode), the amount of the 1% aqueous solution of carboxymethyl cellulose was changed to 0.97 parts in terms of solid content, and the amount of the aqueous solution containing the water-soluble polymer 1 It was changed to 0.03 part based on the amount of the water-soluble polymer 1.
[0296] Except for the above-mentioned matters, in the same manner as in Example 1, a slurry for a negative electrode, a negative electrode, and a lithium ion secondary battery were produced and evaluated.
PUM
| Property | Measurement | Unit |
|---|---|---|
| glass transition temperature | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More