Negative electrode material for nonaqueous secondary batteries, negative electrode for nonaqueous secondary batteries, and nonaqueous secondary battery
A non-aqueous secondary battery and negative electrode material technology, applied in the direction of secondary batteries, battery electrodes, negative electrodes, etc., can solve the problem of insufficient formation of conductive paths, insufficient Li ion diffusivity, low temperature input and output characteristics, and rapid charge and discharge Insufficient cycle characteristics and other problems, to achieve the effect of excellent cycle characteristics and excellent fast charge and discharge characteristics
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0180] (Preparation of Negative Electrode for Nonaqueous Electrolyte Secondary Battery)
[0181] d50 is 8.0μm, d90 is 12.5μm, d10 is 5.3μm, d90 / d10 is 2.4, BET specific surface area is 10.9m 2 / g, the tap density is 0.90g / cm 3 , roundness (1.5-40μm) is 0.95, roundness (10-40μm) is 0.91, powder density is 1.1g / cm 3 To graphite particles with a volume resistivity of 0.053Ω·cm, 2.0 mass% of graphite particles with a primary particle size of 24nm and a BET specific surface area (SA) of 115m were added. 2 / g, DBP oil absorption is the carbon black of 110mL / 100g, and utilize the crushing mechanism of the carbon black aggregate based on the shredder and the mixing and stirring mechanism of the powder based on the rotation of the shovel to use the rotary mixer with the shredder Mixing and stirring were performed for 5 minutes at a rotation speed of 3000 rpm. This mixed powder is mixed with petroleum-based heavy oil obtained when naphtha, which is a precursor of carbonaceous substan...
Embodiment 2
[0199] A sample was obtained by the same method as in Example 1 except that 100 parts by mass of graphite particles were coated with 3 parts by weight of amorphous carbon, and the same evaluation as in Example 1 was performed. The results are shown in Table 1 (Table 1A, Table 1B) and Table 2.
Embodiment 3
[0201] Using d50 of 8.3μm, d90 of 13.3μm, d10 of 4.5μm, d90 / d10 of 3.0, BET specific surface area of 11.0m 2 / g, tap density is 0.83g / cm 3 , roundness (1.5-40μm) is 0.94, roundness (10-40μm) is 0.90, powder density is 1.1g / cm 3 Except for graphite particles having a volume resistivity of 0.049Ω·cm, a sample was obtained by the same method as in Example 2, and the same evaluation as in Example 1 was performed. The results are shown in Table 1 (Table 1A, Table 1B) and Table 2.
PUM
| Property | Measurement | Unit |
|---|---|---|
| electrical resistivity | aaaaa | aaaaa |
| density | aaaaa | aaaaa |
| density | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More