Method of manufacturing a solid polymer electrolyte

• US 5,275,750 A
• Filed: 07/20/1992
• Issued: 01/04/1994
• Est. Priority Date: 07/18/1991
• Status: Expired due to Fees

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Sotomura, Tadashi, Sato, Yoshiko, Kanbara, Teruhisa, Uemachi, Hiroshi, Takeyama, Kenichi
• Primary Examiner(s): Willis, Jr., Prince
• Assistant Examiner(s): Diamond, Alan D.
• Application Number:
  US07/916,963
• Time in Patent Office: 533 Days
• Field of Search: 252/62.2, 252/500, 252/518, 429/192, 429/191
• US Class Current: 252/62.2
• CPC Class Codes: C08F 290/062 Polyethers
• CPC Class Codes: G02F 1/1525 characterised by a particular ion transporting layer, e.g. electrolyte
• CPC Class Codes: H01B 1/122 Ionic conductors
• CPC Class Codes: H01G 9/025 Solid electrolytes H01G11/54 takes precedence
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/0565 Polymeric materials, e.g. gel-type or solid-type
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A method of manufacturing a solid polymer electrolyte which comprises polymerizing an ester polymethoxyoxyalkylene, a diester polyoxyalkylene, an oxycompound having a double bond, and an inorganic salt, and the solid polymer electrolyte thus obtained. The electrolyte is suitable for application in electrochemical devices such as primary or secondary battery, condenser or electrochromic display.

Claims

1. A method of manufacturing a solid polymer electrolyte comprising polymerizing an ester compound, a diester compound and vinylenecarbonate in the presence of inorganic salt to form a cross-linked resin, wherein said ester compound is at least one selected from polymethoxyoxyalkylenes represented by the general formula:

##STR8## where R₁ is H, CH₃

R₂ is H, CH₃, C₂ H₅

n is 1 to 30,

said diester compound is at least one selected from polyoxyalkylenes represented by the general formula;

##STR9## where R₁ is H, CH₃

R₂ is H, CH₃, C₂ H₅

n is 1 to 30.

4. The solid polymer electrolyte obtained from the method according to claim 1.

2. A method of manufacturing a solid polymer electrolyte comprising the steps of:

copolymerizing an ester compound and a diester compound to form a cross-linked resin,

absorbing into the cross-linked resin, an inorganic salt and an oxycompound having a double bond, and then copolymerizing again,

wherein said ester compound is at least one selected from polymethoxyoxyalkylenes represented by the general formula;

##STR10## where R₁ is H, CH₃

R₂ is H, CH₃, C₂ H₅

n is 1 to 30,

and said diester compound is at least one selected from polyoxyalkylenes represented by the general formula;

##STR11## where R₁ is H, CH₃

R₂ is H, CH₃, C₂ H₅

n is 1 to 30.

3. The method of manufacturing a solid polymer electrolyte according to claim 2, wherein said oxycompound having a double bond is vinylenecarbonate represented by the structural formula;

##STR12##

5. The solid polymer electrolyte obtained from the method according to claim 2.

6. The solid polymer electrolyte obtained from the method according to claim 3.