US4439502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Galvanic element having a porous solid-electrolyte sinter framework containing the cathode material
Assignee: VARTA Batterie AG
•
Filing: 1982-03-12
•
Granted: 1984-03-27
•
Expires: 2002-03-12
Abstract
Abstract In a galvanic solid cell, for example of the Na/SbCl 3 systems, the cathode space is occupied by a self-supporting porous sinter framework of solid electrolyte material, in whose pores the active cathode material is retained. A porous structure can be united with the massive solid electrolyte-separator into a unitary sinter composite of high ion conductivity, to which, if desired, there can also be joined on the anode side a porous sinter framework for receiving the alkali metal. The meltable active electrode materials are introduced by immersion into the porous portions of the sinter composite. The porous solid electrolyte structure can also be used advantageously as the separator system for cells with molten liquid electrodes, e.g. of the Na/S high temperature cell type.
Inventors
- 👤 Rainer Bittihn
- 👤 Eren Yalcin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:03
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/18; H01M10/00; H01M10/36; H01M10/39; H01M10/3909; H01M10/3918; H01M4/00; H01M4/02; H01M4/64; H01M4/70; H01M4/80; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
29 words
A galvanic element with solid electrolyte, a negative alkali metal electrode and positive electrode, wherein the solid electrolyte forms a self-supporting porous sinter framework in at least one electrode.
Claim 2
Dependent Claim
29 words
A galvanic element with solid electrolyte, a negative alkali metal electrode and positive electrode, wherein the solid electrolyte forms a self-supporting porous sinter framework in at least one electrode.
Claim 3
Dependent Claim
19 words
The galvanic element of claim 1, wherein an electrode which contains the solid electrolyte framework is the positive electrode.
Claim 4
Dependent Claim
26 words
The galvanic element of claim 1, wherein the solid electrolyte framework of the electrode is homogeneously sintered to a non-porous solid electrolyte material constituting the separator.
Claim 5
Dependent Claim
33 words
The galvanic element of claim 1, wherein the solid electrolyte material is a mixed crystal, of the components of the quaternary system Na 2 O--ZrO 2 --SiO 2 --P 2 O 5 .
Claim 6
Dependent Claim
37 words
The galvanic element of claim 1, wherein the solid electrolyte material is selected from the group of Li 2 O.11 Al 2 O 3 (Li-β-alumina), Na 2 O.11 Al 2 O 3 (Na-β-alumina), and Li 3 N.
Claim 7
Dependent Claim
16 words
The galvanic element of claim 1, wherein the negative electrode is a Li or Na electrode.
Claim 8
Dependent Claim
36 words
The galvanic element of claim 1, wherein the active material of the positive electrode is a meltable compound selected from the group of SbCl 3 , SbBr 3 , SbI 3 , and PbI 2 .
Claim 9
Dependent Claim
16 words
The galvanic element of claim 1, wherein the active material of the positive electrode is sulfur.
Claim 10
Dependent Claim
58 words
In a galvanic element having a solid electrolyte, an alkali metal cathode and an anode, the improvement which comprises, said solid electrolyte forming a self-supporting porous sinter framework in whose pores anode material is disposed so as to constitute said anode, and said framework constituting said anode being joined to non-porous solid electrolyte material which constitutes a separator.
Claim 11
Dependent Claim
58 words
In a galvanic element having a solid electrolyte, an alkali metal cathode and an anode, the improvement which comprises, said solid electrolyte forming a self-supporting porous sinter framework in whose pores anode material is disposed so as to constitute said anode, and said framework constituting said anode being joined to non-porous solid electrolyte material which constitutes a separator.
Claim 12
Dependent Claim
30 words
The galvanic element of claim 9 including a self-supporting porous sinter framework in whose pores cathode material is retained and which is joined to said separator and constitutes the cathode.
Claim 13
Dependent Claim
33 words
The galvanic element of claim 10 wherein said solid electrolyte material is a mixed crystal of the components of the quaternary system Na 2 O--ZrO 2 --SiO 2 --P 2 O 5 .
References Cited (Backward Citations)
US3443997A
Cited
US3476605A
Cited
US3558357A
Cited
US3647549A
Cited
US4230778A
Cited
US4219613A
Cited
US4302518A
Cited
US4226921A
Cited
US4357399A
Cited
US4362793A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-27 | 1987-09-26 | 1988-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-27 | 1991-09-26 | 1992-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-27 | 1995-09-26 | 1996-03-27 | $7700.00 | Window Closed / Lapsed |