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US5567401A
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Method of producing stable metal oxides and chalcogenides and power source
Assignee: National Technology and Engineering Solutions of Sandia LLC
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Filing: 1995-03-14
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Granted: 1996-10-22
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Expires: 2015-03-14
Abstract
Abstract A method of making chemically and electrochemically stable oxides or other chalcogenides for use as cathodes for power source applications, and of making batteries comprising such materials.
Inventors
- 👤 Narayan Doddapaneni
- 👤 David Ingersoll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:32
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/485; C; C01; C01B; C01B13/00; C01B13/14; C01B13/18; C01B13/185; C01B17/00; C01B17/20; C01G; C01G45/00; C01G45/12; C01G45/1221; C01G45/1242; C01G51/00; C01G51/40; C01G51/42; C01G51/44; C01G51/54; C01G53/00; C01G53/40; C01G53/42; C01G53/44; C01G53/54; H01B; H01B1/00; H01B1/06; H01B1/08; H01B1/10; H01M4/50; H01M4/505; H01M4/52; H01M4/525; H01M4/58; H01M4/581; H01M4/5815; C01P; C01P2002/00; C01P2002/30; C01P2002/32; C01P2002/50; C01P2002/52; C01P2002/54; C01P2002/70; C01P2002/72; C01P2004/00; C01P2004/51; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/40; H01M10/00; H01M10/05; H01M10/052; H01M2300/00; H01M2300/0017; H01M2300/0025; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
65 words
A method of producing chemically and electrochemically stable oxides or other chalcogenides for use as cathodes for power source applications, the method comprising the steps of: a) mixing a lithium salt, a metal salt, a pore former, and a solvent; b) removing the solvent; c) drying the mixture; d) performing a stepwise heating of the mixture; and e) cooling the mixture in a dry atmosphere.
Claim 2
Independent Claim
65 words
A method of producing chemically and electrochemically stable oxides or other chalcogenides for use as cathodes for power source applications, the method comprising the steps of: a) mixing a lithium salt, a metal salt, a pore former, and a solvent; b) removing the solvent; c) drying the mixture; d) performing a stepwise heating of the mixture; and e) cooling the mixture in a dry atmosphere.
Claim 3
Dependent Claim
23 words
The method of claim 1 wherein the mixing step comprises mixing a lithium nitrate, a metal salt, a pore former, and a solvent.
Claim 4
Dependent Claim
23 words
The method of claim 1 wherein the mixing step comprises mixing a lithium salt, a metal nitrate, a pore former, and a solvent.
Claim 5
Dependent Claim
40 words
The method of claim 1 wherein the mixing step comprises mixing a lithium salt, a pore former, a solvent, and a metal salt selected from the group consisting of nickel salts, cobalt salts, vanadium salts, titanium salts, and molybdenum salts.
Claim 6
Dependent Claim
37 words
The method of claim 1 wherein the mixing step comprises mixing a lithium nitrate, a metal salt, a solvent, and a pore former selected from the group consisting of ammonium nitrate, ammonium bicarbonate, ammonium carbonate, and urea.
Claim 7
Dependent Claim
22 words
The method of claim 1 wherein the mixing step comprises mixing a lithium nitrate, a metal salt, a pore former, and water.
Claim 8
Dependent Claim
17 words
The method of claim 1 wherein the drying step comprises drying the mixture at approximately 125° C.
Claim 9
Dependent Claim
24 words
The method of claim 1 wherein the performing step comprises performing a stepwise heating of the mixture over a period of approximately four hours.
Claim 10
Dependent Claim
38 words
The method of claim 8 wherein the performing step comprises heating the mixture for approximately two hours at approximately 250° C., for approximately one hour at approximately 350° C., and for approximately one hour at approximately 480° C.
Claim 11
Dependent Claim
27 words
The method of claim 1 wherein the performing step comprises performing a stepwise heating of the mixture up to a maximum temperature of 800° C. or less.
Claim 12
Dependent Claim
18 words
The method of claim 1 wherein the removing step comprises removing the solvent from the mixture by evaporation.
Claim 13
Dependent Claim
25 words
The method of claim 1 wherein the mixing step comprises mixing a lithium nitrate, a plurality of metal salts, a pore former, and a solvent.
Claim 14
Dependent Claim
42 words
The method of claim 12 wherein the mixing step comprises mixing a lithium nitrate, a pore former, a solvent, and a plurality of metal salts selected from the group consisting of nickel salts, cobalt salts, vanadium salts, titanium salts, and molybdenum salts.
Claim 15
Dependent Claim
70 words
The method of claim 1 wherein the mixing step comprises the steps of: a) dissolving the metal salt in water to form a solution; b) adding the solution to a solution of alkali metal hydroxide to form a third solution; c) washing the resulting precipitate; d) dissolving lithium hydroxide and a pore former in a solvent to form a fourth solution; and e) adding the fourth solution to the precipitate.
Claim 16
Dependent Claim
40 words
The method of claim 14 wherein the performing step comprises the steps of heating the mixture to approximately 480° C. over approximately two hours and maintaining the temperature at approximately 480° C. for approximately three hours in an oxygen atmosphere.
Claim 17
Dependent Claim
26 words
The method of claim 1 wherein the mixing step comprises mixing a lithium salt, a metal salt, a pore former, a solvent, and an aluminum oxide.
Claim 18
Dependent Claim
17 words
The method of claim 1 additionally comprising the step of doping the mixture with an aluminum oxide.
Claim 19
Dependent Claim
63 words
A power source comprising: an anode; and a cathode comprising chemically and electrochemically stable oxides or other chalcogenides made according to the steps of: a) mixing a lithium salt, a metal salt, a pore former, and a solvent; b) removing the solvent; c) drying the mixture; d) performing a stepwise heating of the mixture; and e) cooling the mixture in a dry atmosphere.
Claim 20
Dependent Claim
63 words
A power source comprising: an anode; and a cathode comprising chemically and electrochemically stable oxides or other chalcogenides made according to the steps of: a) mixing a lithium salt, a metal salt, a pore former, and a solvent; b) removing the solvent; c) drying the mixture; d) performing a stepwise heating of the mixture; and e) cooling the mixture in a dry atmosphere.
References Cited (Backward Citations)
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| 3.5 Years (Year 4) | 1999-10-22 | 2000-04-22 | 2000-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-10-22 | 2004-04-22 | 2004-10-22 | $3760.00 | Window Closed / Lapsed |
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