US5013618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ternary alloy fuel cell catalysts and phosphoric acid fuel cell containing the catalysts
Assignee: UTC Power Corp
•
Filing: 1989-09-05
•
Granted: 1991-05-07
•
Expires: 2009-09-05
Abstract
Abstract A noble metal ternary alloy catalyst, which has increased mass activity and stability. This catalyst comprises a ternary alloy of platinum, iridium and a metal selected from the group consisting of iron, chromium, cobalt, nickel, vanadium, titanium and manganese.
Inventors
- 👤 Francis J. Luczak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:24
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/90; H01M4/92; H01M4/925; H01M4/926; B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/46; B01J23/468; B01J23/54; B01J23/56; B01J23/64; B01J23/70; B01J23/89; H01M2004/8678; H01M2004/8689; H01M2300/00; H01M2300/0002; H01M2300/0005; H01M2300/0008; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
77 words
A high activity, high stability phosphoric acid fuel cell catalyst particularly adapted for the reduction of oxygen in phosphoric acid fuel cells consisting essentially of: a ternary noble metal catalyst having the composition Pt i Ir j X k where X is selected from the group consisting essentially of Ti, Mn, Ni, Co, V, Cr, and Fe and i is between 40 and 80, j is between 20 and 50, and k is between 10 and 30.
Claim 2
Dependent Claim
77 words
A high activity, high stability phosphoric acid fuel cell catalyst particularly adapted for the reduction of oxygen in phosphoric acid fuel cells consisting essentially of: a ternary noble metal catalyst having the composition Pt i Ir j X k where X is selected from the group consisting essentially of Ti, Mn, Ni, Co, V, Cr, and Fe and i is between 40 and 80, j is between 20 and 50, and k is between 10 and 30.
Claim 3
Dependent Claim
13 words
The catalyst as recited in claim 1 wherein X is Cr or Fe.
Claim 4
Dependent Claim
11 words
The catalyst as recited in claim 1 wherein X is Fe.
Claim 5
Dependent Claim
69 words
A phosphoric acid fuel cell having an anode and a cathode with phosphoric acid disposed therebetween, said cathode comprising a platinum containing ternary alloy supported catalyst wherein the improvement consisting essentially of: said platinum alloy having alloys having the composition Pt i Ir j , X k where X is selected from the group consisting of Ti, Mn, Ni, Co, V, Cr, and Fe and 40≦i≦80, 20≦j≦50 and 10≦k≦30.
Claim 6
Dependent Claim
69 words
A phosphoric acid fuel cell having an anode and a cathode with phosphoric acid disposed therebetween, said cathode comprising a platinum containing ternary alloy supported catalyst wherein the improvement consisting essentially of: said platinum alloy having alloys having the composition Pt i Ir j , X k where X is selected from the group consisting of Ti, Mn, Ni, Co, V, Cr, and Fe and 40≦i≦80, 20≦j≦50 and 10≦k≦30.
Claim 7
Dependent Claim
14 words
The phosphoric acid fuel cell of claim 4, wherein X is Cr or Fe.
Claim 8
Dependent Claim
12 words
The phosphoric acid fuel cell of claim 4, wherein X is Fe.
References Cited (Backward Citations)
US3291753A
Cited
US3428544A
Cited
US4202934A
Cited
US4316944A
Cited
US4447506A
Cited
US4613582A
Cited
US4806515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-05-06 | 1994-11-05 | 1995-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-06 | 1998-11-05 | 1999-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-06 | 2002-11-05 | 2003-05-07 | $7700.00 | Window Closed / Lapsed |