EP0331342A2
Expired / Lapsed
EP
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Solid electrolyte devices
Assignee: Imperial Chemical Industries Ltd
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Filing: 1989-02-22
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Granted: —
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Expires: 2009-02-22
Abstract
Abstract An electrochemical or an electrolytic device comprises a conductive anode (3) and cathode (2) separated by a solid electrolyte (1), and wherein one electrode surrounds the other, and the solid electrolyte (1) comprises: a) a matrix of polymer main chains, having side-chains linked to the main chains, which side chains compris polar groups free from active hydrogen atoms, b) a polar aprotic liquid dispersed in the matrix, and c) an ionised ammonium, alkali metal or alkaline earth metal salt dissolved in the matrix and/or liquid, and a process for the preparation thereof.
Inventors
- 👤 Philip Cheshire
- 👤 Jozef Emilio Przeworski
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 10:51
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/14; C08G65/22; H; H01; H01G; H01G11/00; H01G11/54; H01G9/00; H01G9/004; H01G9/022; H01G9/025; H01G9/028; H01M; H01M4/00; H01M4/02; H01M6/00; H01M6/14; H01M6/16; H01M6/18; H01M6/181; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/13; Y02P; Y02P70/00; Y02P70/50; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49108; Y10T29/49115
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
82 words
An electrochemical or an electrolytic device which comprises a conductive anode and cathode separated by a solid electrolyte, and wherein one electrode surrounds the other, and the solid electrolyte comprises: a) a matrix of polymer main chains, having side-chains linked to the main chains, which side chains compris polar groups free from active hydrogen atoms, b) a polar aprotic liquid dispersed in the matrix, and c) an ionised ammonium, alkali metal or alkaline earth metal salt dissolved in the matrix and/or liquid.
Claim 2
Dependent Claim
82 words
An electrochemical or an electrolytic device which comprises a conductive anode and cathode separated by a solid electrolyte, and wherein one electrode surrounds the other, and the solid electrolyte comprises: a) a matrix of polymer main chains, having side-chains linked to the main chains, which side chains compris polar groups free from active hydrogen atoms, b) a polar aprotic liquid dispersed in the matrix, and c) an ionised ammonium, alkali metal or alkaline earth metal salt dissolved in the matrix and/or liquid.
Claim 3
Dependent Claim
18 words
A device according to claim 1 which is an electrochemical cell comprising electrodes capable of mutual electrochemical reaction.
Claim 4
Dependent Claim
19 words
A device according to claim 1, characterised in that it is in the form of a flexible multi-sheathed cable.
Claim 5
Dependent Claim
27 words
A device according to claim 1, characterised in that the matrix polymer main chains are cross-linked and essentially organic, and the side-chains comprise ester or ether linkages.
Claim 6
Dependent Claim
34 words
A device according to claim 4, characterised in that the main chains are hydrocarbons or polyethers cross-linked by C-C bonds or oxy functions between the main and/or side chains, or in other pendent groups.
Claim 7
Dependent Claim
42 words
A device according to claim 5, characterised in that 2 to 8% of the monomer units of the main chains are cross-linked via the side-chains or other pendent groups, and the main chains average 2,500 to 10,000 backbone monomer units per chain.
Claim 8
Dependent Claim
53 words
A device according to claim 1, characterised in that the aprotic polar liquid is ethylene or propylene carbonate, a dialkylforamide or -sulphoxide, a cyclic ether, sulpholane or a bis(polyalkoxyalkyl) carbonate. or a cyclic amide present in the matrix at 35 to 200 parts by weight per 100 parts by weight of the matrix.
Claim 9
Dependent Claim
59 words
A cell according to claim 2, characterised in that it comprises a cathode which comprises a solid dispersion of 30 to 60% MnO₂ and 2 to 10% carbon black, acetylene black or a transition metal (w/w on total cathode) as particles of less than 40µ grain size in a matrix of a solid electrolyte as defined in claim 1.
Claim 10
Dependent Claim
42 words
A process for preparing a device according to claim 1, characterised by surrounding one electrode with the solid electrolyte or a precursor thereof, as necessary converting any such precursor to the solid electrolyte, and surrounding the solid electrolyte with the other electrode.
Claim 11
Dependent Claim
53 words
A process according to claim 9 for preparing a device according t claim 3, characterised in that the solid electrolyte or precursor thereof is applied as a thin cylindrical film to a circular cross-section wire electrode or electrode assembly, and the other electrode is applied to the solid electrolyte also as thin film.
References Cited (Backward Citations)
No citation records indexed.
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