US5445905A
Expired / Lapsed
US
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Dual flow aluminum hydrogen peroxide battery
Assignee: United States Department of the Navy
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Filing: 1993-11-30
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Granted: 1995-08-29
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Expires: 2013-11-30
Abstract
Abstract A novel dual flow battery configuration is provided comprising an aqueous drogen peroxide catholyte, an aqueous anolyte, a porous solid electrocatalyst capable of reducing said hydrogen peroxide and separating said anolyte, and an aluminum anode positioned within said anolyte. Separation of catholyte and anolyte chambers prevents hydrogen peroxide poisoning of the aluminum anode.
Inventors
- 👤 Catherine L. Marsh
- 👤 Stuart L. Licht
- 👤 Donna E. Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:25
CPC Classifications
H; H01; H01M; H01M12/00; H01M12/04
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
54 words
An electrical storage cell comprising: a housing; an aqueous hydrogen peroxide catholyte within said housing; an aqueous anolyte within said housing; a porous solid electrocatalyst positioned to separate said anolyte from said catholyte and formed of a material capable of converting hydrogen peroxide to hydroxide ion; and an aluminum anode positioned within said anolyte.
Claim 2
Dependent Claim
54 words
An electrical storage cell comprising: a housing; an aqueous hydrogen peroxide catholyte within said housing; an aqueous anolyte within said housing; a porous solid electrocatalyst positioned to separate said anolyte from said catholyte and formed of a material capable of converting hydrogen peroxide to hydroxide ion; and an aluminum anode positioned within said anolyte.
Claim 3
Dependent Claim
14 words
The electrical storage cell of claim 1 wherein said electrocatalyst is a porous conductor.
Claim 4
Dependent Claim
54 words
The electrical storage cell of claim 2 wherein said porous conductor used as an electrocatalyst is a member selected from the group consisting of porous nickel, copper, silver, zinc or graphite, coated with a material electrocatalytic to the reduction of hydrogen peroxide, selected from the group consisting of platinum, iridium, palladium and alloys thereof.
Claim 5
Dependent Claim
15 words
The electrical storage cell of claim 1 wherein said aqueous anolyte includes a hydroxide compound.
Claim 6
Dependent Claim
16 words
The electrical storage cell of claim 1 wherein said aqueous catholyte solutions includes a hydroxide compound.
Claim 7
Dependent Claim
50 words
The electrical storage cell of claim 1 wherein the hydroxide has a cation selected from the group consisting of Li + ions, Na + ions, K + ions, Cs + ions, NH 4 + ions, Mg 2+ ions, Ca 2+ ions, Ba 2+ ions, Al 3+ ions and mixtures thereof.
Claim 8
Dependent Claim
15 words
The electrical storage cell of claim 1 wherein sad aqueous anolyte solution includes a salt.
Claim 9
Dependent Claim
15 words
The electrical storage cell of claim 1 wherein said aqueous catholyte solution includes a salt.
Claim 10
Dependent Claim
50 words
The electrical storage cell of claim 7 wherein said salt has a cation selected from the group consisting of Li + ions, Na + ions, K + ions, Cs + ions, NH 4 + ions, Mg 2+ ions, Ca 2+ ions, Ba 2+ ions, Al 3+ ions and mixtures thereof.
Claim 11
Dependent Claim
50 words
The electrical storage cell of claim 8 wherein said salt has a cation selected from the group consisting of Li + ions, Na + ions, K + ions, Cs + ions, NH 4 + ions, Mg 2+ ions, Ca 2+ ions, Ba 2+ ions, Al 3+ ions and mixtures thereof.
Claim 12
Dependent Claim
31 words
The electrical storage cell of claim 1 wherein at least one of said aqueous anolyte or catholyte solutions has a conductivity selected from the range of 0.001 millimho/cm to 2 mho/cm.
Claim 13
Dependent Claim
13 words
The electrical storage cell of claim 1 wherein said aqueous anolyte includes seawater.
Claim 14
Dependent Claim
18 words
The electrical storage cell of claim 1 in which said catholyte is 0.001 molar to saturated hydrogen peroxide.
Claim 15
Dependent Claim
18 words
The electrical storage cell of claim 1 in which said catholyte is 0.5 to 1.5 molar hydrogen peroxide.
Claim 16
Dependent Claim
39 words
The electrical storage cell of claim 1 in which the aluminum anode material is replaced by a material selected from the group consisting of a lithium anode material comprised of at least about 99.99% purity or a lithium alloy.
Claim 17
Dependent Claim
31 words
The electrical storage cell of claim 1 in which the aluminum anode material is replaced by a calcium anode material comprised of at least about 99.99% purity or a calcium alloy.
Claim 18
Dependent Claim
31 words
The electrical storage cell of claim 1 in which the aluminum anode material is replaced by a magnesium anode material comprised of at least about 99.99% purity or a magnesium alloy.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-08-28 | 1999-02-27 | 1999-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-08-28 | 2003-02-27 | 2003-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-08-28 | 2007-02-27 | 2007-08-29 | $7700.00 | Window Closed / Lapsed |