US4066824A
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US
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Cell containing chalcogenide cathode, alkali metal anode and solid halo-aluminum alkali metal compound electrolyte
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1977-01-04
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Granted: 1978-01-03
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Expires: 1997-01-04
Abstract
Abstract A novel electrochemical cell is disclosed utilizing: (a) an anode which contains as the anode-active material an alkali metal; (b) a cathode which contains as the cathode-active material a chalcogenide of the empirical formula M'Zn wherein M' is one or more metals selected from the group consisting of titanium, zirconium hafnium, niobium, tantalum and vanadium, Z is one or more chalcogens selected from the group consisting of oxygen, sulfur, selenium and tellurium, and n is a numerical value between about 1.8 and about 3.2; and (c) an electrolyte consisting essentially of one or more solid alkali metal aluminum tetrahalide compounds of the formula MAlX4 wherein M is an alkali metal and X is one or more halogens selected from the group consisting of chlorine, bromine and iodine. Preferred is the cell wherein the anode is lithium, the cathode contains as its cathode-active material TiS2, and the electrolyte consists essentially of LiAlCl4.
Inventors
- 👤 Bhaskara M. L. Rao
- 👤 Bernard G. Silbernagel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:53
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/581; H01M10/00; H01M10/05; H01M10/052; H01M10/056; H01M10/0561; H01M10/0562; H01M4/48; H01M4/483; H01M4/485; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
144 words
A method of operating an electric current-producing cell, comprising: drawing a current from the cell at a temperature below the melting point of the electrolyte of the cell, wherein the cell contains: a. an alkali metal-containing anode; b. a cathode containing as its cathode-active material, one or more chalcogenides of the empirical formula: M'Z.sub.n wherein M' is one or more metals selected from the group consisting of titanium, zirconium, hafnium, niobium, tantalum and vanadium, wherein Z is one or more chalcogens selected from the group consisting of oxygen, sulfur, selenium and tellurium, and wherein n is a numerical value between about 1.8 and about 3.2; and c. a solid electrolyte consisting essentially of one or more compounds of the formula: MAlX.sub.4 wherein M is an alkali metal and X is one or more halogens selected from the group consisting of chlorine, bromine and iodine.
Claim 2
Independent Claim
144 words
A method of operating an electric current-producing cell, comprising: drawing a current from the cell at a temperature below the melting point of the electrolyte of the cell, wherein the cell contains: a. an alkali metal-containing anode; b. a cathode containing as its cathode-active material, one or more chalcogenides of the empirical formula: M'Z.sub.n wherein M' is one or more metals selected from the group consisting of titanium, zirconium, hafnium, niobium, tantalum and vanadium, wherein Z is one or more chalcogens selected from the group consisting of oxygen, sulfur, selenium and tellurium, and wherein n is a numerical value between about 1.8 and about 3.2; and c. a solid electrolyte consisting essentially of one or more compounds of the formula: MAlX.sub.4 wherein M is an alkali metal and X is one or more halogens selected from the group consisting of chlorine, bromine and iodine.
Claim 3
Dependent Claim
53 words
The method of claim 1 wherein the anode is substantially sodium, lithium, potassium, or alloys containing these, wherein M' is one or more metals selected from the group consisting of titanium, niobium, tantalum and vanadium, wherein Z is sulfur, and wherein M is selected from the group consisting of sodium, lithium and potassium.
Claim 4
Dependent Claim
20 words
The method of claim 2 wherein the anode is substantially lithium or a lithium alloy and wherein M is lithium.
Claim 5
Dependent Claim
23 words
The method of claim 3 wherein the cathode-active material is titanium disulfide, and wherein the solid electrolyte consists essentially of LiAlCl 4 .
Claim 6
Dependent Claim
134 words
An electric current-producing cell from which a current may be drawn at a temperature below the melting point of the electrolyte, comprising: a. an alkali metal-containing anode; b. a cathode containing as its cathode-active material, one or more chalcogenides of the empirical formula: M'Z.sub.n wherein M' is one or more metals selected from the group consisting of titanium, zirconium, hafnium, niobium, tantalum and vanadium, wherein Z is one or more chalcogens selected from the group consisting of oxygen, sulfur, selenium and tellurium, and wherein n is a numerical value between about 1.8 and about 3.2; and c. a solid electrolyte consisting essentially of one or more compounds of the formula: MAlX.sub.4 wherein M is an alkali metal and X is one or more halogens selected from the group consisting of chlorine, bromine and iodine.
Claim 7
Dependent Claim
134 words
An electric current-producing cell from which a current may be drawn at a temperature below the melting point of the electrolyte, comprising: a. an alkali metal-containing anode; b. a cathode containing as its cathode-active material, one or more chalcogenides of the empirical formula: M'Z.sub.n wherein M' is one or more metals selected from the group consisting of titanium, zirconium, hafnium, niobium, tantalum and vanadium, wherein Z is one or more chalcogens selected from the group consisting of oxygen, sulfur, selenium and tellurium, and wherein n is a numerical value between about 1.8 and about 3.2; and c. a solid electrolyte consisting essentially of one or more compounds of the formula: MAlX.sub.4 wherein M is an alkali metal and X is one or more halogens selected from the group consisting of chlorine, bromine and iodine.
Claim 8
Dependent Claim
35 words
The cell of claim 5 wherein the anode is substantially sodium, lithium, potassium or alloys containing these, and M' is one or more metals selected from the group consisting of titanium, niobium, tantalum and vanadium.
Claim 9
Dependent Claim
22 words
The cell of claim 6 wherein M in the electrolyte formula is selected from the group consisting of sodium, lithium and potassium.
Claim 10
Dependent Claim
9 words
The cell of claim 7 wherein X is chlorine.
Claim 11
Dependent Claim
24 words
The cell of claim 8 wherein M' is titanium, Z is sulfur and n is a numerical value between about 1.8 and about 2.1
Claim 12
Dependent Claim
15 words
The cell of claim 9 wherein the anode is substantially lithium or a lithium alloy.
Claim 13
Dependent Claim
9 words
The cell of claim 10 wherein M is lithium.
Claim 14
Dependent Claim
48 words
An electric current-producing cell from which a current may be drawn at a temperature below the melting point of the electrolyte, comprising: a. a lithium metal-containing anode; b. a cathode containing titanium disulfide as the cathode-active material; and c. a solid electrolyte consisting essentially of LiAlCl 4 .
Claim 15
Dependent Claim
48 words
An electric current-producing cell from which a current may be drawn at a temperature below the melting point of the electrolyte, comprising: a. a lithium metal-containing anode; b. a cathode containing titanium disulfide as the cathode-active material; and c. a solid electrolyte consisting essentially of LiAlCl 4 .
Claim 16
Dependent Claim
19 words
The cell of claim 12 wherein the solid electrolyte has been melted and cooled to form a glassy phase.
References Cited (Backward Citations)
US3751298A
Cited
US3791867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-02 | 1981-07-04 | 1982-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-02 | 1985-07-04 | 1986-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-02 | 1989-07-04 | 1990-01-03 | $7700.00 | Window Closed / Lapsed |