§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
US4001043A Expired / Lapsed US ⏱️ 0.0 years remaining

Anode moderator for reactive metal electrochemical cells

Assignee: Lockheed Martin Corp
•
Filing: 1975-05-23
•
Granted: 1977-01-04
•
Expires: 1995-05-23
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract In a reactive metal-water electrochemical cell, an alkaline electrolyte, containing soluble peroxide ions which improve the uniformity of reaction at the anode, reduces the anode's sensitivity to changes in the hydroxyl ion concentration of the electrolyte, reduces the anode's sensitivity to electrolyte flow rate and reduces the anode's sensitivity to temperature. The improved characteristics of the cell result from the ability of the peroxide ions to stabilize the anode and also to be reduced at a more electronegative potential than is required for the reduction of water. The soluble peroxide ion, HO 2 - , is formed when hydrogen peroxide, sodium peroxide and other soluble inorganic peroxide compounds are dissolved in the alkaline solution.

Inventors

  • 👤 William R. Momyer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 10:29
CPC Classifications
H; H01; H01M; H01M12/00; H01M12/04; H01M6/00; H01M6/04

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 75 words
An electrochemical cell consisting essentially of a lithium anode spaced from a cathode by an electrically insulating film formed on said anode in the presence of water, an aqueous lithium hydroxide electrolyte in which said anode and cathode are immersed, and an anode moderator for improving the efficiency of said cell by reducing the said anode's sensitivity to changes in electrolyte molarity, flow rate and temperature, said anode moderator consisting essentially of soluble peroxide ions.
Claim 2
Dependent Claim 75 words
An electrochemical cell consisting essentially of a lithium anode spaced from a cathode by an electrically insulating film formed on said anode in the presence of water, an aqueous lithium hydroxide electrolyte in which said anode and cathode are immersed, and an anode moderator for improving the efficiency of said cell by reducing the said anode's sensitivity to changes in electrolyte molarity, flow rate and temperature, said anode moderator consisting essentially of soluble peroxide ions.
Claim 3
Dependent Claim 40 words
An electrochemical cell in accordance with claim 1, wherein said soluble peroxide ions are formed from soluble peroxide compounds selected from the group consisting of hydrogen peroxide, sodium peroxide, sodium super oxide, lithium peroxide, potassium peroxide and potassium super oxide.
Claim 4
Dependent Claim 16 words
An electrochemical cell in accordance with claim 2, wherein said soluble peroxide compound is hydrogen peroxide.
Claim 5
Dependent Claim 16 words
An electrochemical cell in accordance with claim 2, wherein said soluble peroxide compound is sodium peroxide.
Claim 6
Dependent Claim 16 words
An electrochemical cell in accordance with claim 2, wherein said soluble peroxide compound is lithium peroxide.
Claim 7
Dependent Claim 16 words
An electrochemical cell in accordance with claim 2, wherein said soluble peroxide compound is potassium peroxide.
Claim 8
Dependent Claim 41 words
An electrochemical cell in accordance with claim 2, wherein sufficient peroxide ions are utilized to sustain the desired current density of the cell with the maximum amount being dictated by the production of excess heat and spontaneous decomposition of said anode.

References Cited (Backward Citations)

US2706213A Cited
US3791871A Cited
US3833422A Cited
US3833420A Cited
US3825445A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-01-04 1980-07-05 1981-01-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-01-04 1984-07-05 1985-01-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-01-04 1988-07-05 1989-01-04 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag