Separator, and secondary battery
A secondary battery and diaphragm technology, applied in the field of secondary batteries, can solve the problems of deterioration and coloring of the positive electrode side, and achieve the effects of low electrolyte swelling, high ion conductivity, and long cycle life
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example 1
[0132] Preparation Example 1 (Production of Fluoropolymer A)
[0133] In an autoclave with an inner volume of 6 L, 1.9 kg of pure water was added, and after nitrogen replacement was fully performed, 1.8 g of octafluorocyclobutane was added, and the inside of the system was maintained at 37° C. with a stirring speed of 580 rpm. Then, 260 g of a mixed gas of TFE / VdF=5 / 95 mol % and 0.6 g of ethyl acetate were added, and then 2.8 g of a 50 mass % methanol solution of di-n-propyl peroxydicarbonate was added to initiate polymerization. Since the pressure in the system decreased with the progress of the polymerization, a mixed gas of TFE / VdF=5 / 85 mol % was continuously supplied, and the pressure in the system was maintained at 1.3 MPaG. Stirring was continued for 32 hours. Then, after the pressure was released and returned to atmospheric pressure, the reaction product was washed with water and dried to obtain 900 g of a white powder of fluoropolymer A.
[0134] The obtained fluorop...
preparation example 2
[0138] Preparation Example 2 (Production of Fluoropolymer B)
[0139] In an autoclave with an inner volume of 6 L, 1.9 kg of pure water was added, and after nitrogen replacement was fully performed, 1.8 g of octafluorocyclobutane was added, and the inside of the system was maintained at 37° C. with a stirring speed of 580 rpm. Then, 260 g of a mixed gas of TFE / VdF=6 / 94 mol % and 0.6 g of ethyl acetate were added, and then 5.8 g of a 50 mass % methanol solution of di-n-propyl peroxydicarbonate was added to start the polymerization. Since the pressure in the system decreased with the progress of the polymerization, a mixed gas of TFE / VdF=5 / 85 mol % was continuously supplied, and the pressure in the system was maintained at 1.3 MPaG. Stirring was continued for 32 hours. Then, after the pressure was released and returned to atmospheric pressure, the reaction product was washed with water and dried to obtain 900 g of a white powder of fluoropolymer B.
[0140] The obtained fluoro...
preparation example 3
[0144] Preparation Example 3 (Production of Fluoropolymer C)
[0145] In an autoclave with an inner volume of 4 L, 1.3 kg of pure water was added, and after nitrogen substitution was fully performed, 1.3 kg of octafluorocyclobutane was added, and the inside of the system was maintained at 37° C. with a stirring speed of 580 rpm. Then, 200 g of a mixed gas of TFE / VdF=4 / 96 mol % and 0.4 g of ethyl acetate were added, and then 1 g of a 50 mass % methanol solution of di-n-propyl peroxydicarbonate was added to initiate polymerization. Since the pressure in the system decreased with the progress of the polymerization, a mixed gas of TFE / VdF=13 / 87 mol % was continuously supplied, and the pressure in the system was maintained at 1.3 MPaG. Stirring was continued for 17 hours. Then, after the pressure was released and returned to atmospheric pressure, the reaction product was washed with water and dried to obtain 190 g of a white powder of fluoropolymer C.
[0146] The obtained fluoro...
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More