US5523181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer solid-electrolyte composition and electrochemical cell using the composition
Assignee: Stonehart Associates Inc
•
Filing: 1993-09-24
•
Granted: 1996-06-04
•
Expires: 2013-09-24
Abstract
Abstract The polymer solid-electrolyte composition according to the present invention comprises a polymer solid electrolyte selected from the group consisting of perfluorocarbon sulfonic acid, polysulfones, perfluorocarbonic acid, styrene-divinylbenzene sulfonic acid cation-exchange resins and styrene-butadiene anion-exchange resins, and 0.01-50% by weight of fine particle silica and/or fibrous silica fiber relative to the weight of the polymer solid electrolyte.
Inventors
- 👤 Paul Stonehart
- 👤 Masahiro Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:58
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/10; H01M8/1004; C; C25; C25B; C25B9/00; C25B9/17; C25B9/19; C25B9/23; G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/406; G01N27/407; G01N27/4073; G01N27/4074; H01M8/1016; H01M8/1018; H01M8/102; H01M8/1023; H01M8/1039; H01M8/1041; H01M8/1046; H01M8/1051; C25B3/00; C25B3/01; C25B3/07; C25B3/20; C25B3/23; H01M2300/00; H01M2300/0017; H01M2300/0065; H01M2300/0082; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
94 words
A polymer solid-electrolyte composition comprising a resin selected from the group consisting of cationic-exchange resins and anionic-exchange resins, wherein the cationic-exchange resin is selected from the group consisting of perfluorocarbon sulfonic acids, polysulfones, perfluorocarbonic acid and styrene-divinylbenzene sulfonic acid, said resin containing a silica dispersed therein in an amount of 0.01-50 wt. %, based on the weight of the composition, and said silica is selected from the group consisting of particulate silicas having a mean primary particle size of 0.1 μm or less and fibrous silicas having a diameter of 6 μm or less.
Claim 2
Dependent Claim
94 words
A polymer solid-electrolyte composition comprising a resin selected from the group consisting of cationic-exchange resins and anionic-exchange resins, wherein the cationic-exchange resin is selected from the group consisting of perfluorocarbon sulfonic acids, polysulfones, perfluorocarbonic acid and styrene-divinylbenzene sulfonic acid, said resin containing a silica dispersed therein in an amount of 0.01-50 wt. %, based on the weight of the composition, and said silica is selected from the group consisting of particulate silicas having a mean primary particle size of 0.1 μm or less and fibrous silicas having a diameter of 6 μm or less.
Claim 3
Dependent Claim
13 words
The composition of claim 1, wherein the anionic-exchange resin is a styrene-butadiene resin.
Claim 4
Dependent Claim
130 words
An electrochemical cell consisting of an anode, a layer of a polymer solid-electrolyte composition and a cathode, said composition comprising a resin selected from the group consisting of cationic-exchange resins and anionic-exchange resins, wherein the cationic-exchange resin is selected from the group consisting of perfluorocarbon sulfonic acids, polysulfones, perfluorocarbonic acid and styrene-divinylbenzene sulfonic acid, said resin containing a silica dispersed therein in an amount of 0.01-50 wt. %, based on the weight of the composition, and said silica is selected from the group consisting of particulate silicas having a mean primary particle size of 0.1 μm or less and fibrous silicas having a diameter of 6 μm or less and said composition is used as at least one of said electrolyte in said anode and/or said cathode, or said layer.
Claim 5
Dependent Claim
130 words
An electrochemical cell consisting of an anode, a layer of a polymer solid-electrolyte composition and a cathode, said composition comprising a resin selected from the group consisting of cationic-exchange resins and anionic-exchange resins, wherein the cationic-exchange resin is selected from the group consisting of perfluorocarbon sulfonic acids, polysulfones, perfluorocarbonic acid and styrene-divinylbenzene sulfonic acid, said resin containing a silica dispersed therein in an amount of 0.01-50 wt. %, based on the weight of the composition, and said silica is selected from the group consisting of particulate silicas having a mean primary particle size of 0.1 μm or less and fibrous silicas having a diameter of 6 μm or less and said composition is used as at least one of said electrolyte in said anode and/or said cathode, or said layer.
Claim 6
Dependent Claim
14 words
The electrochemical cell of claim 3 wherein the anionic-exchange resin is a styrene-butadiene resin.
Claim 7
Dependent Claim
159 words
A fuel cell having a cathode current collector, a cathode catalyst layer, a layer of a polymer solid-electrolyte composition, an anode catalyst layer and an anode current collector laminate, said catalyst layer supplied with an oxidative gas and anode catalyst layer supplied with a fuel gas, said composition comprising a resin selected from the group consisting of cationic-exchange resins and anionic-exchange resins, wherein the cationic-exchange resin is selected from the group consisting of perfluorocarbon sulfonic acids, polysulfones, perfluorocarbonic acid and styrene-divinylbenzene sulfonic acid, said resin containing a silica dispersed therein in an amount of 0.01-50 wt. %, based on the weight of the composition, and said silica is selected from the group consisting of particulate silicas having a mean primary particle size of 0.1 μm or less and fibrous silicas having a diameter of 6 μm or less, wherein at least one of said cathode catalyst layer, layer of polymer solid-electrolyte composition and anode catalyst layer comprises said silica.
Claim 8
Dependent Claim
159 words
A fuel cell having a cathode current collector, a cathode catalyst layer, a layer of a polymer solid-electrolyte composition, an anode catalyst layer and an anode current collector laminate, said catalyst layer supplied with an oxidative gas and anode catalyst layer supplied with a fuel gas, said composition comprising a resin selected from the group consisting of cationic-exchange resins and anionic-exchange resins, wherein the cationic-exchange resin is selected from the group consisting of perfluorocarbon sulfonic acids, polysulfones, perfluorocarbonic acid and styrene-divinylbenzene sulfonic acid, said resin containing a silica dispersed therein in an amount of 0.01-50 wt. %, based on the weight of the composition, and said silica is selected from the group consisting of particulate silicas having a mean primary particle size of 0.1 μm or less and fibrous silicas having a diameter of 6 μm or less, wherein at least one of said cathode catalyst layer, layer of polymer solid-electrolyte composition and anode catalyst layer comprises said silica.
Claim 9
Dependent Claim
14 words
The fuel cell of claim 5 wherein the anionic-exchange resin is a styrene-butadiene resin.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-06-04 | 1999-12-04 | 2000-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-06-04 | 2003-12-04 | 2004-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-06-04 | 2007-12-04 | 2008-06-04 | $7700.00 | Window Closed / Lapsed |