Patent US4609599A successfully refreshed from Google Patents.
US4609599A
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New lanthanum and nickel based alloys, their manufacture and their electrochemical applications
Assignee: Bpifrance Financement SA
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Filing: 1981-05-18
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Granted: 1986-09-02
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Expires: 2001-05-18
Abstract
Abstract The invention relates to lanthanum and nickel based alloys comprising components of the La Ni 5 type where the lanthanum and/or nickel are partially substituted, the substituent element comprising a metal M chosen in the VI or VII group of the elements periodic system and this according to an atomic proportion comprised between 0.1 and 2 relative to nickel, and preferably between 0.5 and 1. The invention relates also to hydrogen electrodes made from such an alloy, and to an alkaline electrode type accumulator comprising such an electrode.
Inventors
- 👤 Annick Percheron nee Guegan
- 👤 Jean-Claude Achard
- 👤 Guy Bronoel
- 👤 Joel Sarradin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:19
CPC Classifications
C; C22; C22C; C22C19/00; C01; C01B; C01B6/00; C01B6/24; H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/38; H01M4/383; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10S; Y10S420/00; Y10S420/90
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
77 words
An electrode material suitable for use in forming a hydrogen electrode of an energy accumulator based on lanthanum and nickel, and consisting of an alloy corresponding substantially to the formula LaNi 5 in which one of the components La and Ni or both of them are partially substituted by a metal M selected from group VI or VII of the periodic table of elements, in an atomic proportion from 0.1 to 2 with respect to the nickel.
Claim 2
Dependent Claim
77 words
An electrode material suitable for use in forming a hydrogen electrode of an energy accumulator based on lanthanum and nickel, and consisting of an alloy corresponding substantially to the formula LaNi 5 in which one of the components La and Ni or both of them are partially substituted by a metal M selected from group VI or VII of the periodic table of elements, in an atomic proportion from 0.1 to 2 with respect to the nickel.
Claim 3
Dependent Claim
15 words
An electrode material according to claim 1, wherein the partial substitution relates essentially to nickel.
Claim 4
Dependent Claim
51 words
An electrode material according to claim 2, comprising a ternary alloy having the formula LaNi.sub.x-y M.sub.y wherein M is a metal of the VI or VII group of the periodic table of elements, x is a number from 4.7 to 5.5 and y is a number from 0.1 to b 2.
Claim 5
Dependent Claim
16 words
An electrode material according to claim 3, wherein y is a number from 0.5 to 1.
Claim 6
Dependent Claim
102 words
An electrode material suitable for use in forming a hydrogen electrode of an energy accumulator based on lanthanum and nickel, and consisting of an alloy corresponding substantially to the formula LaNi 5 in which one of the components La and Ni or the both are partially substituted by a metal M of group VII of the periodic table of elements in an atomic proportion from 0.1 to 2 with respect to the nickel, further including at least another element M' partially substituting the lanthanum and/or nickel selected from the groups Ia, II, III, IV and V of the periodic table of elements.
Claim 7
Dependent Claim
102 words
An electrode material suitable for use in forming a hydrogen electrode of an energy accumulator based on lanthanum and nickel, and consisting of an alloy corresponding substantially to the formula LaNi 5 in which one of the components La and Ni or the both are partially substituted by a metal M of group VII of the periodic table of elements in an atomic proportion from 0.1 to 2 with respect to the nickel, further including at least another element M' partially substituting the lanthanum and/or nickel selected from the groups Ia, II, III, IV and V of the periodic table of elements.
Claim 8
Dependent Claim
71 words
An electrode material according to claim 5 corresponding substantially to the formula La.sub.a Ni.sub.x-y-b M.sub.y M' wherein M' is a metal selected from those of groups Ia, II, III, IV and V of the periodic table of elements, x is a number from 4.7 to 5.5, Y is a number from 0.1 to 2, a is a number from 0.8 to 1 and b is a number from 0.1 to 1.
Claim 9
Dependent Claim
26 words
An electrode material according to claim 5, wherein the substitution by M' relates essentially to lanthanum, M' being chosen from the IIb, IIIa and IVa groups.
Claim 10
Dependent Claim
26 words
An electrode material according to claim 6, wherein the substitution by M' relates essentially to nickel, M' being chosen from the Ia, IIIb and Va groups.
Claim 11
Dependent Claim
16 words
An electrode material according to any one of claims 5 to 7, wherein M' represents aluminium.
Claim 12
Dependent Claim
10 words
Electrode material according to claim 1, wherein M is manganese.
Claim 13
Dependent Claim
32 words
Lanthanum and nickel based ternary alloys selected from the group consisting of La 1 .00 Ni 4 .50 Mn 0 .50, and La 1 .00 Ni 4 .25 Mn 0 .75, alloys.
Claim 14
Dependent Claim
32 words
Lanthanum and nickel based ternary alloys selected from the group consisting of La 1 .00 Ni 4 .50 Mn 0 .50, and La 1 .00 Ni 4 .25 Mn 0 .75, alloys.
Claim 15
Dependent Claim
50 words
Lanthanum and nickel based quaternary alloys selected from the group consisting of La 1 .00 Ni 4 .25 Al 0 .50 Mn 0 .25, La 1 .00 Ni 4 .00 Al 0 .75 Mn 0 .25 and La 1 .00 Ni 4 .25 Cr 0 .25 Al 0 .5 alloys.
Claim 16
Dependent Claim
50 words
Lanthanum and nickel based quaternary alloys selected from the group consisting of La 1 .00 Ni 4 .25 Al 0 .50 Mn 0 .25, La 1 .00 Ni 4 .00 Al 0 .75 Mn 0 .25 and La 1 .00 Ni 4 .25 Cr 0 .25 Al 0 .5 alloys.
Claim 17
Dependent Claim
7 words
Hydrided electrode materials according to claim 1.
Claim 18
Dependent Claim
10 words
A hydrogen electrode comprising a material according to claim 1.
Claim 19
Dependent Claim
41 words
Hydrogen electrode according to claim 14, characterized in that it comprises a material having on at least a part of its surface compounds which, while authorizing passage of hydrogen during the cathodic charge, slow down the desorption of the adsorbed hydrogen.
Claim 20
Dependent Claim
76 words
An electrochemical energy accumulator of the alkaline electrolyte type including a negative electrode based on lanthanum and nickel, said negative electrode comprising an alloy, corresponding substantially to the formula LaNi 5 in which one of the components La and Ni or both of them are partially substituted by a metal M selected from group VI or VII of the periodic table of elements, in an atomic proportion from 0.1 to 2 with respect to the nickel.
Claim 21
Dependent Claim
76 words
An electrochemical energy accumulator of the alkaline electrolyte type including a negative electrode based on lanthanum and nickel, said negative electrode comprising an alloy, corresponding substantially to the formula LaNi 5 in which one of the components La and Ni or both of them are partially substituted by a metal M selected from group VI or VII of the periodic table of elements, in an atomic proportion from 0.1 to 2 with respect to the nickel.
Claim 22
Dependent Claim
108 words
A process for preparing an alloy corresponding substantially to the formula LaNi 5 in which one of the components La and Ni or both of them are partially substituted by a metal M selected from group VI or VII of the periodic table of elements, in an atomic proportion from 0.1 to 2 with respect to the nickel which comprises mixing the alloy constitutents in melted state, by using a cooled down crucible for avoiding eventual contamination of the alloy by the crucible constitutents, cooling the mixture of solidify it and subjecting the solidified mixture to a re-heating operation at a temperature between 600° C. and 1300° C.
Claim 23
Dependent Claim
108 words
A process for preparing an alloy corresponding substantially to the formula LaNi 5 in which one of the components La and Ni or both of them are partially substituted by a metal M selected from group VI or VII of the periodic table of elements, in an atomic proportion from 0.1 to 2 with respect to the nickel which comprises mixing the alloy constitutents in melted state, by using a cooled down crucible for avoiding eventual contamination of the alloy by the crucible constitutents, cooling the mixture of solidify it and subjecting the solidified mixture to a re-heating operation at a temperature between 600° C. and 1300° C.
Claim 24
Dependent Claim
14 words
An accumulator according to claim 16 wherein the partial substitution relates essentially to nickel.
Claim 25
Dependent Claim
51 words
An accumulator according to claim 16, which includes a ternary alloy having the formula LaNi x-y M y wherein M is a metal of the VI or VII group of the periodic table of elements, x is a number from 4.7 to 5.5 and y a number from 0.1 to 2.
Claim 26
Dependent Claim
84 words
An accumulator according to claim 16, including an alloy corresponding substantially to the formula LaNi 5 in which one of the compoennts La and Ni or the both are partially substituted by a metal M of group VII of the periodic table of elements in an atomic proportion form 0.1 to 2 with respect to the nickel further comprising at least another element M' partially substituting the lanthanum and/or nickel selected from the groups Ia, II, III, IV and V of the periodic table.
Claim 27
Dependent Claim
73 words
An accumulator according to claim 20 which includes a quaternary alloy having the formula La.sub.a Ni.sub.x-y-b M.sub.y M'.sub.b wherein M' is a metal selected from those of groups Ia, II, III, IV, and V of the periodic table of elements, x is a number from 4.7 to 5.5, y is a number from 0.1 to 2, a is a number from 0.8 to 1 and b is a number from 0.1 to 1.
References Cited (Backward Citations)
US4107405A
Cited
US4154364A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-01 | 1990-03-03 | 1990-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-01 | 1994-03-03 | 1994-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-01 | 1998-03-03 | 1998-09-02 | $7700.00 | Window Closed / Lapsed |