| 摘要 |
The present invention is preferably directed to a polylactam ceramic coating for a microporous battery separator for a lithium ion secondary battery and a method of making this formulation and application of this formulation to make a coated microporous battery separator. The preferred inventive coating has excellent thermal and chemical stability, excellent adhesion to microporous base substrate, membrane, and/or electrode, improved binding properties to ceramic particles and/or has improved or excellent resistance to thermal shrinkage, dimensional integrity, and/or oxidation stability when used in a rechargeable lithium ion battery. |
| 主权项 |
1. A microporous battery separator membrane coated on one or both sides with a polylactam ceramic coating where the polylactam is defined by the chemical structure: where R1, R2, R3, and R4 can be an alkyl or aromatic substituents and R5 can be an alkyl, aromatic, or fused ring and; where the preferred polylactam can be a homopolymer or a copolymer where co-polymeric ‘X’ group can be a derived from vinyl, alkyl vinyl, substituted alkyl vinyl, vinyl alcohol, vinyl acetate, acrylic acid, alkyl acrylate, acrylonitrile, maleic anhydride, maleic imide, styrene, polyvinylpyrrolidone (PVP), polyvinylvalerolactam, polyvinylcaprolactam (PVCap), polyamide, or polyimide and; where ‘m’ can have values between 1 and 10, and preferably is between a value of 2 and 4. |
