Novel composite diaphragm for lithium ion battery
An ion battery, composite lithium technology, applied in secondary batteries, battery pack components, circuits, etc., can solve problems such as difficulty in meeting safety requirements, easy precipitation of lithium dendrites, battery explosion, etc., to improve thermal stability performance , The effect of improving heat shrinkage performance and high porosity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0020] HDPE, paraffin oil, KH550 crosslinking agent, ultra-fine glass fiber, ethanol, etc. are selected as raw materials. The preparation method has the following steps:
[0021] (1) Take one part of KH550 and add 4 parts of ethanol to make a solution;
[0022] (2) Take a glass fiber, take 0.5 part of the solution in (1) and spray it on the glass fiber, mix the glass fiber with the solution by grinding, and dry the mixed fiber in an oven at 90 degrees Celsius ;
[0023] (3) Take 0.1 part of dried glass fiber and add 1 part of mixed melt of HDPE and paraffin oil at 150 degrees Celsius, and stir and mix with a high-speed mixer;
[0024] (4) After the mixed slurry is passed through three processes of casting machine, extruder and widening machine, a film is obtained.
[0025] The physical properties of the prepared diaphragm are as follows: (1) Air permeability: ≤160s / 100cc; (2) Porosity: 30%-45%; (3) Tensile strength (MD): MD≥2230Kgf / Cm 2 ; (4) Tensile strength (TD): TD ≥ 198...
Embodiment 2
[0026] HDPP, paraffin oil, KH550 crosslinking agent, ultra-fine glass fiber, ethanol, etc. are selected as raw materials. The preparation method has the following steps:
[0027] (1) Take one part of KH550 and add 5 parts of ethanol to make a solution;
[0028] (2) Take a glass fiber, take 0.1 part of the solution in (1) and spray it on the glass fiber, mix the glass fiber with the solution by grinding, and dry the mixed fiber in an oven at 90 degrees Celsius ;
[0029] (3) Take 0.1 part of dried glass fiber and add 1 part of HDPP and paraffin oil mixed melt at 180 degrees Celsius, and stir and mix with a high-speed mixer;
[0030] (4) After the mixed slurry is passed through three processes of casting machine, extruder and widening machine, a film is obtained.
[0031] The physical properties of the prepared diaphragm are as follows: (1) Air permeability: ≤160s / 100cc; (2) Porosity: 30%-45%; (3) Tensile strength (MD): MD≥2300Kgf / Cm 2 ; (4) Tensile strength (TD): TD ≥ 2020Kg...
Embodiment 3
[0032] HDPE, paraffin oil, KH550 crosslinking agent, ultra-fine glass fiber, ethanol, etc. are selected as raw materials. The preparation method has the following steps:
[0033] (1) Take a portion of KH550 and add 3 portions of ethanol to make a solution;
[0034] (2) Take a glass fiber, take 0.08 parts of the solution in (1) and spray it on the glass fiber, mix the glass fiber with the solution by ball milling, and dry the mixed fiber in an oven at 100 degrees Celsius ;
[0035] (3) Take 0.2 parts of dried glass fiber and add 1 part of HDPE and paraffin oil mixed solution at 150 degrees Celsius, and stir and mix with a high-speed mixer;
[0036] (4) After the mixed slurry is passed through three processes of casting machine, extruder and widening machine, a film is obtained.
[0037] The physical properties of the prepared diaphragm are as follows: (1) Air permeability: ≤160s / 100cc; (2) Porosity: 30%-45%; (3) Tensile strength (MD): MD≥2320Kgf / Cm 2 ; (4) Tensile strength (...
PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| strength | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More