US5609795A
Expired / Lapsed
US
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Solid polymer electrolyte and method of manufacture thereof
Assignee: NTT Inc
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Filing: 1995-06-06
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Granted: 1997-03-11
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Expires: 2015-06-06
Abstract
Abstract The present invention presents a solid polymer electrolyte consisting of a multiphase polymer matrix and an electrolyte solution. The polymer matrix consists of a highly polar polymeric (HPP) phase impregnated with the electrolyte solution to form ion conducting channels, and a less polar polymeric (LPP) phase, constituting the support structure. Further, the invented solid polymer electrolyte may also include a second ion conducting channels, forming a multiphase microstructure in which the electrolyte solution is present around the LPP particles as a fine mesh-like network. The invention also presents two kinds of method for making such a solid polymer electrolyte. The first includes the steps of: making a multiphase polymer matrix; and impregnating the polymer matrix with an electrolyte solution. The second includes the steps of: making a multiphase polymer matrix containing an electrolyte in advance; and impregnating the multiphase polymer matrix containing the electrolyte with a solvent to dissolve the electrolyte or electrolyte solution in the polymer matrix.
Inventors
- 👤 Morihiko Matsumoto
- 👤 Toshihiro Ichino
- 👤 Shiro Nishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:47
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/18; H01M6/181; H01M6/16; H01M6/162; H01M6/164; Y; Y10; Y10S; Y10S205/00; Y10S205/923; Y10S205/924; Y10S205/928
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
106 words
A method for making a solid polymer electrolyte comprising: a step of making a polymer matrix having a multiphase microstructure; and a step of impregnating said polymer matrix with a liquid electrolyte solution, wherein said multiphase microstructure comprises a high polar phase having a highly polar solid polymeric component and a less polar phase having a solid polymeric component that is less polar than the highly polar polymeric component and selected from the group consisting of polystyrene, polypropylene, polyisobutene, polyethylene, polybutadiene, polyisoprene, polychloroprene, poly(α-methylstyrene), a polybutylmethacrylate, polybutylacrylate, poly( 2-ethylhexylacrylate), polydibutylphthalate, polyvinylbutylether, polyvinyl butyral, polyvinyl formal, and copolymers, mixtures and derivatives of said less polar polymeric components.
Claim 2
Independent Claim
106 words
A method for making a solid polymer electrolyte comprising: a step of making a polymer matrix having a multiphase microstructure; and a step of impregnating said polymer matrix with a liquid electrolyte solution, wherein said multiphase microstructure comprises a high polar phase having a highly polar solid polymeric component and a less polar phase having a solid polymeric component that is less polar than the highly polar polymeric component and selected from the group consisting of polystyrene, polypropylene, polyisobutene, polyethylene, polybutadiene, polyisoprene, polychloroprene, poly(α-methylstyrene), a polybutylmethacrylate, polybutylacrylate, poly( 2-ethylhexylacrylate), polydibutylphthalate, polyvinylbutylether, polyvinyl butyral, polyvinyl formal, and copolymers, mixtures and derivatives of said less polar polymeric components.
Claim 3
Independent Claim
123 words
A method for making a solid polymer electrolyte comprising: a step of making a polymer matrix having a multiphase microstructure and comprising an electrolyte component; and a step of impregnating said polymer matrix comprising an electrolyte component with a liquid solvent or a liquid electrolyte solution for dissolving said electrolyte component, wherein said multiphase microstructure comprises a high polar phase having a highly polar solid polymeric component and a less polar phase having a solid polymeric component that is less polar than the highly polar polymeric component and selected from the group consisting of polystyrene, polypropylene, polyisobutene, polyethylene, polybutadiene, polyisoprene, polychloroprene, poly(α-methylstyrene), a polybutylmethacrylate, polybutylacrylate, poly(2-ethylhexylacrylate), polydibutylphthalate, polyvinylbutylether, polyvinyl butyral, polyvinyl formal, and copolymers, mixtures and derivatives of said less polar polymeric components.
Claim 4
Independent Claim
123 words
A method for making a solid polymer electrolyte comprising: a step of making a polymer matrix having a multiphase microstructure and comprising an electrolyte component; and a step of impregnating said polymer matrix comprising an electrolyte component with a liquid solvent or a liquid electrolyte solution for dissolving said electrolyte component, wherein said multiphase microstructure comprises a high polar phase having a highly polar solid polymeric component and a less polar phase having a solid polymeric component that is less polar than the highly polar polymeric component and selected from the group consisting of polystyrene, polypropylene, polyisobutene, polyethylene, polybutadiene, polyisoprene, polychloroprene, poly(α-methylstyrene), a polybutylmethacrylate, polybutylacrylate, poly(2-ethylhexylacrylate), polydibutylphthalate, polyvinylbutylether, polyvinyl butyral, polyvinyl formal, and copolymers, mixtures and derivatives of said less polar polymeric components.
Claim 5
Dependent Claim
55 words
A method for making a solid polymer electrolyte as claimed in claim 1, further comprising the steps of: dispersing highly polar polymer particles and less polar polymer particles in a dispersion medium; removing said dispersion medium thereby making a polymer matrix having a multiphase microstructure; followed by impregnating said polymer matrix with an electrolyte solution.
Claim 6
Dependent Claim
71 words
A method for making a solid polymer electrolyte as claimed in claim 2, further comprising the steps of: dispersing highly polar polymer particles and less polar polymer particles in a dispersion medium containing an electrolyte material; removing said dispersion medium thereby making said polymer matrix of a multiphase microstructure comprising said electrolyte component; followed by impregnating said polymer matrix with a solvent or an electrolyte solution for dissolving said electrolyte component.
Claim 7
Dependent Claim
96 words
A method for making a solid polymer electrolyte as claimed in claim 1, wherein said step of making said polymer matrix of a multiphase microstructure, comprises the steps of: (a) dispersing highly polar polymeric particles and less polar polymeric particles in a dispersion medium; (b) removing said dispersion medium thus making a first polymer matrix; (c) dissolving said first polymer matrix in a solvent; (d) removing said solvent to make a second polymer matrix containing a multiphase microstructure; and said impregnating step includes a step of (e) impregnating said second polymer matrix with an electrolyte solution.
Claim 8
Dependent Claim
131 words
A method for making a solid polymer electrolyte as claimed in claim 2, wherein said step of making a polymer matrix of a multiphase microstructure comprising an electrolyte component, comprises the steps of: (a) dispersing highly polar polymer particles and less polar polymer particles in a dispersion medium containing said electrolyte component; (b) removing said dispersion medium thus making a first polymer matrix containing said electrolyte component; (c) dissolving said polymer matrix containing said electrolyte component in a solvent; (d) removing said solvent thus making a second polymer matrix containing said electrolyte component; and said step of impregnating said polymer matrix comprising an electrolyte component includes a step of: (e) impregnating said second polymer matrix containing said electrolyte component with a solvent or an electrolyte solution for dissolving said electrolyte component.
Claim 9
Dependent Claim
63 words
A method for making a solid polymer electrolyte as claimed in claim 1, wherein said step of making said polymer matrix of a multiphase microstructure, comprises the steps of: dissolving a highly polar polymeric feed material and less polar polymeric feed material in a solvent; removing said solvent thus making a polymer matrix; followed by impregnating said polymer matrix with an electrolyte solution.
Claim 10
Dependent Claim
106 words
A method for making a solid polymer electrolyte as claimed in claim 2, wherein said step of making a polymer matrix of a multiphase microstructure and comprising an electrolyte component, comprises the steps of: (a) dissolving highly polar polymeric feed material, less polar polymeric feed material and said electrolyte in a solvent; (b) removing said solvent thus making a polymer matrix of said multiphase microstructure comprising said electrolyte component; and said step of impregnating said polymer matrix comprising an electrolyte component includes a step of: (c) impregnating said polymer matrix containing said electrolyte component with a solvent or an electrolyte solution for dissolving said electrolyte component.
Claim 11
Independent Claim
35 words
A method for making a solid polymer electrolyte as claimed in one of claims 3 to 6, wherein at least one of said highly polar polymer particles and less polar polymer particles comprise latex particles.
Claim 12
Independent Claim
27 words
A method for making a solid polymer electrolyte as claimed in one of claims 3 to 6, wherein said highly polar polymer particles comprise a polyacrylonitrile material.
Claim 13
Independent Claim
36 words
A method for making a solid polymer electrolyte as claimed in one of claims 3 to 6, wherein at least one of said highly polar polymer particles and less polar polymer particles comprise a rubber material.
Claim 14
Dependent Claim
36 words
A method for making a solid polymer electrolyte as claimed in claim 7 or 8, wherein at least one of said highly polar polymeric feed material and less polar polymeric feed material comprise a rubber material.
Claim 15
Independent Claim
37 words
A method for making a solid polymer electrolyte as claimed in one of claims 3, 4, 5, or 6, wherein said highly polar polymer particles comprise poly(acrylonitrile-butadiene) particles, and said less polar polymer particles comprise poly(styrene-butadiene) particles.
Claim 16
Independent Claim
46 words
A method for making a solid polymer electrolyte as claimed in one of claims 3 to 6, wherein at least one of said highly polar polymeric particles and said less polar polymeric particles includes at least one of a polar organic material and a cross-linking material.
Claim 17
Dependent Claim
46 words
A method for making a solid polymer electrolyte as claimed in claim 7 or 8, wherein at least one of said highly polar polymeric feed material and said less polar polymeric feed material includes at least one of a polar organic material and a cross-linking material.
Claim 18
Dependent Claim
31 words
A method for making a solid polymer electrolyte as claimed in claim 14, wherein said organic polar material includes a carboxyl group material or a carboxylate metal salt substituent group material.
Claim 19
Dependent Claim
24 words
A method for making a solid polymer electrolyte as claimed in claim 1 or 2, wherein said electrolyte solution is a metal salt solution.
Claim 20
Dependent Claim
23 words
A method for making a solid polymer electrolyte as claimed in claim 17, wherein said metal salt solution is a lithium salt solution.
Claim 21
Independent Claim
37 words
A method for making a solid polymer electrolyte as claimed in one of claims 3 to 8, wherein said step of removing said solvent and said step of removing said dispersion medium includes a step of heating.
Claim 22
Independent Claim
28 words
A method for making a solid polymer electrolyte as claimed in one of claims 7 or 8, wherein said highly polar polymeric feed material comprises a polyacrylonitrile material.
Claim 23
Independent Claim
35 words
A method for making a solid polymer electrolyte as claimed in one of claims 7 or 8, wherein said highly polar polymeric feed material comprises poly(acrylonitrile-butadiene), and said less polar polymeric feed material comprises poly(styrene-butadiene).
Claim 24
Dependent Claim
31 words
A method for making a solid polymer electrolyte as claimed in claim 11, wherein said highly polar polymer particles comprise poly(acrylonitrile-butadiene) particles, and said less polar polymer particles comprise poly(styrene-butadiene) particles.
Claim 25
Dependent Claim
31 words
A method for making a solid polymer electrolyte as claimed in claim 12, wherein said highly polar polymeric feed material comprises poly(acrylonitrile-butadiene), and said less polar polymeric feed material comprises poly(styrene-butadiene).
Claim 26
Dependent Claim
31 words
A method for making a solid polymer electrolyte as claimed in claim 15, wherein said organic polar material includes a carboxyl group material or a carboxylate metal salt substituent group material.
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| 3.5 Years (Year 4) | 2000-03-10 | 2000-09-09 | 2001-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-10 | 2004-09-09 | 2005-03-11 | $3760.00 | Window Closed / Lapsed |
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