NON-AQUEOUS-SECONDARY-BATTERY SEPARATOR AND NON-AQUEOUS SECONDARY BATTERY

• US 20150318528A1
• Filed: 03/05/2014
• Published: 11/05/2015
• Est. Priority Date: 03/06/2013
• Status: Abandoned Application

• Current Assignee: Teijin Limited
• Original Assignee: Teijin Limited
• Inventors: YOSHITOMI, Takashi, NISHIKAWA, Satoshi, IWAI, Ayumi
• Application Number:
  US14/651,390
• Publication Number:
  US 20150318528A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01M 50/417 Polyolefins
• CPC Class Codes: H01M 50/426 Fluorocarbon polymers
• CPC Class Codes: H01M 50/44 Fibrous material
• CPC Class Codes: H01M 50/461 with adhesive layers between electrodes and separators
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

Provided is a non-aqueous-secondary-battery separator including: a microporous membrane containing a fibrillar resin; and an adhesive porous layer which is provided on one or both surfaces of the microporous membrane and contains a fibrillar polyvinylidene fluoride resin, in which an average pore diameter acquired from a specific surface area of the microporous membrane is from 50 nm to 90 nm or a fibrillar diameter acquired from a specific surface area of the microporous membrane is from 150 nm to 350 nm.

Claims

1. A non-aqueous-secondary-battery separator comprising:

a microporous membrane containing a fibrillar resin; and

an adhesive porous layer which is provided on one or both surfaces of the microporous membrane and contains a fibrillar polyvinylidene fluoride resin,

wherein an average pore diameter acquired from a specific surface area of the microporous membrane is from 50 nm to 90 nm.

3. The non-aqueous-secondary-battery separator according to claim 1,

wherein a fibrillar diameter acquired from a specific surface area of the adhesive porous layer is from 50 nm to 70 nm.

4. The non-aqueous-secondary-battery separator according to claim 1,

wherein an average pore diameter acquired from a specific surface area of the adhesive porous layer is from 37 nm to 74 nm.

5. The non-aqueous-secondary-battery separator according to claim 1,

wherein a peeling force between the microporous membrane and the adhesive porous layer is equal to or greater than 0.10 N/cm.

6. A non-aqueous secondary battery using the separator according to claim 1.

2. A non-aqueous-secondary-battery separator comprising:

a microporous membrane containing a fibrillar resin; and

an adhesive porous layer which is provided on one or both surfaces of the microporous membrane and contains a fibrillar polyvinylidene fluoride resin,

wherein a fibrillar diameter acquired from a specific surface area of the microporous membrane is from 150 nm to 350 nm.

7. The non-aqueous-secondary-battery separator according to claim 2,

wherein a fibrillar diameter acquired from a specific surface area of the adhesive porous layer is from 50 nm to 70 nm.

8. The non-aqueous-secondary-battery separator according to claim 2,

wherein an average pore diameter acquired from a specific surface area of the adhesive porous layer is from 37 nm to 74 nm.

9. The non-aqueous-secondary-battery separator according to claim 2,

wherein a peeling force between the microporous membrane and the adhesive porous layer is equal to or greater than 0.10 N/cm.

10. A non-aqueous secondary battery using the separator according to claim 2.