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US5264307A
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Solid, polymeric, polyether based electrolyte
Assignee: Eni Tecnologie SpA
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Filing: 1993-02-23
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Granted: 1993-11-23
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Expires: 2013-02-23
Abstract
Abstract A solid, polymeric electrolyte is prepared by: 1) blending: (a) a macromer of formula (I) ##STR1## wherein R =methyl, ethyl, n is an integer comprised within the range of from 2 to 20, x is an integer comprised within the range of from 2 to 5; (b) a difunctional comonomer of formula (II) CH 2 ═C(CH 3 )COO(CH 2 CH 2 O) m --CO--(CH 3 )C═CH 2 wherein m is an integer comprised within the range of from 2 to 5; with a molar ratio of the macromer (I) to the difunctional comonomer (II) comprised within the range of from 98:2 to 60:40; (c) an ionic compound in an amount comprised within the range of from 1 to 30% by weight; (d) an oligomer or a dipolar aprotic liquid in an amount comprised within the range of from 0 to 80% by weight; (e) a photoinitiator in an amount comprised within the range of from 0 to 10% by weight; 2) applying the above mixture on an inert support and exposing it to a source of ultraviolet light, thermal radiations, or electron beam.
Inventors
- 👤 Maria Andrei
- 👤 Luca Marchese
- 👤 Arnaldo Roggero
- 👤 Marco Ferrari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:12
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/18; H01M6/181; C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/14; C07C43/15; C07C43/16; C07C69/00; C07C69/52; C07C69/533; C07C69/54; C08; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/331; C08L; C08L71/00; C08L71/02; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/122
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
226 words
Solid, polymeric electrolyte, comprising a solid solution of an ionic compound in a solid, crosslinked polymeric matrix of polyether, characterized in that said polymeric electrolyte is prepared by: 1) preparing a mixture containing: (a) a macromer of formula (I) ##STR8## wherein R is methyl or ethyl, n is an integer within the range of from 2 to 20, x is an integer within the range of from 2 to 5; (b) a difunctional comonomer of formula (II) CH 2 ═C(CH 3 )COO(CH 2 CH 2 O) m --CO--(CH 3 )C═CH 2 wherein m is an integer within the range of from 2 to 5; with a molar ratio of the macromer (I) to the difunctional comonomer (II) within the range of from 98:2 to 60:40; (c) an ionic compound in an amount within the range of from 1 to 30% by weight; (d) an oligomer or a dipolar aprotic liquid in an amount within the range of from 0 to 80% by weight; (e) a photoinitiator in an amount within the range of from 0 to 10% by weight; (2) applying the above mixture on an inert support and exposing it to a source of ultraviolet light, thermal radiation, or electron beam, with the amount of the component (e) present in the mixture being larger than zero only in the case of exposure to ultraviolet light.
Claim 2
Dependent Claim
226 words
Solid, polymeric electrolyte, comprising a solid solution of an ionic compound in a solid, crosslinked polymeric matrix of polyether, characterized in that said polymeric electrolyte is prepared by: 1) preparing a mixture containing: (a) a macromer of formula (I) ##STR8## wherein R is methyl or ethyl, n is an integer within the range of from 2 to 20, x is an integer within the range of from 2 to 5; (b) a difunctional comonomer of formula (II) CH 2 ═C(CH 3 )COO(CH 2 CH 2 O) m --CO--(CH 3 )C═CH 2 wherein m is an integer within the range of from 2 to 5; with a molar ratio of the macromer (I) to the difunctional comonomer (II) within the range of from 98:2 to 60:40; (c) an ionic compound in an amount within the range of from 1 to 30% by weight; (d) an oligomer or a dipolar aprotic liquid in an amount within the range of from 0 to 80% by weight; (e) a photoinitiator in an amount within the range of from 0 to 10% by weight; (2) applying the above mixture on an inert support and exposing it to a source of ultraviolet light, thermal radiation, or electron beam, with the amount of the component (e) present in the mixture being larger than zero only in the case of exposure to ultraviolet light.
Claim 3
Dependent Claim
26 words
Polymeric electrolyte according to claim 1, in which the molar ratio of macromer (I) to comonomer (II) is within the range of from 95:5 to 70:30.
Claim 4
Dependent Claim
27 words
Solid, polymeric electrolyte according to claim 1, in which the ionic compound is present in an amount within the range of from 5 to 20% by weight.
Claim 5
Dependent Claim
35 words
Solid, polymeric electrolyte according to claim 1, in which the ionic compound is a salt of a metal selected from the group consisting of lithium, sodium, potassium, calcium, copper, zinc, magnesium, lead, tin and aluminum.
Claim 6
Dependent Claim
23 words
Solid, polymeric electrolyte according to claim 4, in which the salt is selected from the group consisting of perchlorate, triflate, tetrafluoroborate, and hexafluoroarsenate.
Claim 7
Dependent Claim
13 words
Solid, polymeric electrolyte according to claim 4, in which said metal is lithium.
Claim 8
Dependent Claim
28 words
Solid, polymeric electrolyte according to claim 1, in which the dipolar aprotic liquid is present in an amount within the range of from 30 to 70% by weight.
Claim 9
Dependent Claim
22 words
Solid, polymeric electrolyte according to claim 1, in which the dipolar aprotic liquid is propylene carbonate, ethylene carbonate, dimethoxyethane or mixtures thereof.
Claim 10
Dependent Claim
21 words
Electrolyte according to claim 1, in which the oligomer is selected from oligoethylene glycol dialkyl ethers, and polyethylene glycol dialkyl ethers.
Claim 11
Dependent Claim
23 words
Electrolyte according to claim 1, in which the photoinitiator is in an amount within the range of from 0.5 to 10% by weight.
Claim 12
Dependent Claim
14 words
Electrolyte according to claim 1, in which the photoinitiator is benzophenone or benzoin methylether.
Claim 13
Dependent Claim
48 words
Electrolyte according to claim 1, in which the support is a film of an inert plastics material, glass, metal foil, or a surface of a composite cathode constituted by an oxide or sulfide of a transition metal in mixture with an ionically conductive material and an electronic conductor.
Claim 14
Dependent Claim
15 words
Electrolyte according to claim 9, wherein the oligoethylene glycol dialkyl ether is diglyme or tetraglyme.
Claim 15
Dependent Claim
17 words
Electrolyte according to claim 10, wherein the photoinitiator is within the range of from 1 to 5%.
Claim 16
Dependent Claim
22 words
Electrolyte according to claim 1, in membrane form, used as an electrolytic separator in electrochemical devices, optical and electrochromic displays and sensors.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-11-22 | 1997-05-24 | 1997-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-22 | 2001-05-24 | 2001-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-22 | 2005-05-24 | 2005-11-23 | $7700.00 | Window Closed / Lapsed |