Separator for battery, and non-aqueous lithium battery
A separator and battery technology, applied in the direction of lithium storage battery, secondary battery, battery pack components, etc., can solve the problem of inability to use aqueous solution, and achieve the effect of excellent electrolyte retention, improved cycle characteristics, and improved battery characteristics
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1-1
[0286] Prepare polypropylene resin (manufactured by Prime Polymer, 300SV, density: 0.90g / cm 3 , MFR: 3.0 g / 10 minutes, Tm: 167°C) and N, N'-dicyclohexyl-2,6-naphthalene dicarboxamide as a nucleating agent for the β crystal form. With respect to 100 parts by mass of the polypropylene-based resin, a β crystal form nucleating agent was added in a ratio of 0.2 parts by mass, and the raw materials were mixed and put into a twin-screw extruder manufactured by Toshiba Machine Co., Ltd. (diameter: φ40mm, L / D: 32), after melting and mixing at a set temperature of 300°C, the extruded strands were cooled and solidified in a water tank, and the strands were cut with a granulator to produce a polypropylene resin particle. The β activity of the polypropylene resin composition was 80%.
[0287] Next, as the mixed resin composition constituting the B layer, high-density polyethylene (manufactured by JapanPolyethylene Co., Ltd., Novatec HD HF560, density: 0.963g / cm 3 , MFR: 7.0g / 10 minutes...
Embodiment 1-2
[0291] Make the A layer the same as in Example 1-1, and the B layer is high-density polyethylene (manufactured by Prime Polymer, Hi-ZEX3300F, density: 0.950g / cm 3 , MFR: 1.1g / 10 points), use the extruder to extrude these two kinds of raw materials from two kinds of three-layer dies respectively, and make the outer layer be polypropylene resin, the middle layer be B-layer resin, use 125 The casting roll at ℃ was used to cool and solidify, thereby producing a film.
[0292] The above-mentioned film was stretched 4.5 times in the longitudinal direction using a longitudinal stretching machine, and then stretched 2.2 times in the transverse direction at 100° C. by a transverse stretching machine, and then subjected to heat setting / relaxation treatment, thereby obtaining a battery separator. Table 1 shows the physical properties of the obtained battery separator.
Embodiment 1-3
[0294] A film was produced in the same manner as in Example 1-1. The film was stretched 4.1 times in the longitudinal direction using a longitudinal stretching machine, then stretched 1.8 times in the transverse direction at 100° C. by a transverse stretching machine, and then subjected to heat setting / relaxation treatment to obtain a battery separator. Table 1 shows the physical properties of the obtained battery separator.
PUM
| Property | Measurement | Unit |
|---|---|---|
| surface roughness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| strength | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More