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6063345 |
Method of separating NaCl from a LiCl solution
Disclosed is a method of separating NaCl from a NaCl contaminated aqueous LiCl solution involving concentration of the solution, cooling of concentrated solution and separation of the crystallized...
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6048507 |
Process for the purification of lithium carbonate
Disclosed are methods for preparing high purity lithium carbonate which can be used for pharmaceutical applications, electronic grade crystals of lithium or to prepare battery-grade lithium metal....
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6042622 |
Process for crystallization of alkali metal bicarbonate salts
Alkali metal bicarbonate salts, e.g., sodium bicarbonate, are crystallized from aqueous solutions thereof in the presence of a crystal growth promoting amount of lecithin or lecithin containing...
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6017500 |
High purity lithium salts and lithium salt solutions
The present invention provides an inexpensive process for the preparation of lithium salts of formula LiX having a desired or required level of purity using lithium chloride and lithium sulfate. In...
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5997836 |
Alkali aluminum complex hydroxide carbonate salt, and a process for producing said salt and its uses
According to this invention, an amorphous or pseudo-boehmite-type hydrated alumina gel and an alkali metal carbonate or bicarbonate as starting materials are reacted in an aqueous medium to give a...
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5993759 |
Production of lithium carbonate from brines
Lithium carbonate can be efficiently produced from a brine by (i) removing the boron therefrom, (ii) diluting the boron-free brine, (iii) removing magnesium from the diluted brine, and (iv) adding...
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5980856 |
Synthetic chalcoalumite-type compounds and processes for producing the same
This invention relates to synthetic chalcoalumite-type compounds represented by formula (1) below: M 2 + a -x/2 Li x 1 + Al 4 3 + (OH) b (A n -) c .mH 2 O (1) ...
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5980855 |
Method for preparing lithiated metal oxides
A method for lithiating a metal compound with lithium metal in the presence of a catalyst, wherein the lithiated metal compound is useful as a cathode in an electrochemical battery, is described.
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5961950 |
Method for preparing solid solution materials such as lithium manganese oxide
Lithiated manganese oxides are synthesized using a novel two stage process. Using appropriate starting materials, lithiation is accomplished via low temperature ion exchange in aqueous warm salt...
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5911920 |
Manufacturing method for Li composite oxides employed as electrode materials in Li batteries
It is an object of the present invention to provide a manufacturing method for Li composite oxides employed as electrode materials for Li ion batteries which is capable of obtaining Li composite...
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5888463 |
Li reclamation process
Li batteries are cryogenically cooled, comminuted and reacted with water having its pH adjusted with the addition of LiOH. The resulting salts are substantially dewatered and optionally further...
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5863512 |
Process for preparing layered rock salt type lithium ferrite by mixed alkali hydrothermal method
A process for preparing LiFeO 2 having a layered rock salt type structure is characterized in that at least one member selected from the group consisting of water-soluble iron salts, iron...
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5714129 |
Lithium cell treating method
A treating fluid is in contact with a negative electrode containing lithium of a lithium cell under a first condition to react a surface portion of the negative electrode, and a treating fluid is...
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5711019 |
Method for treating electrolyte to remove Li.sub.2 O
A method of removing Li 2 O present in an electrolyte predominantly of LiCl and KCl. The electrolyte is heated to a temperature not less than about 500° C. and then Al is introduced into the...
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5676919 |
Method for producing sintered lithium oxide granules
High-purity, sintered spherical Li 2 O granules is produced by a gel precipitation technique. Li 2 CO 3 powder is dispersed in an aqueous solution of a water-soluble resin, whose drops are...
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5650006 |
Process for producing a lithium niobate-lithium tantalate single crystal substrate
A film made of lithium niobate-lithium tantalate solid solution may be formed on a single crystal substrate having a composition of LiNb 1 -z Ta z O 3 (0≤z<0.8) by the liquid phase epitaxial...
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5641465 |
Lithium maganese oxide compound and method of preparation
A method for manufacturing Li 2 Mn 2 O 4 comprising the steps of providing β-MnO 2 or λ-MnO 2 ; providing a source of lithium; dissolving lithium from the lithium source in a liquid medium...
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5628973 |
Lithium cell treating method and lithium cell treating apparatus
A treating fluid is in contact with a negative electrode containing lithium of a lithium cell under a first condition to react a surface portion of the negative electrode, and a treating fluid is...
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5628974 |
Process for treating by-products of lithium/sulfur hexafluoride
A process is provided for treating the solid reaction by-products of lith and sulfur hexafluoride. Lithium in the by-product solid waste is converted to lithium hydroxide. Lithium sulfide in the...
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5599516 |
Recovery of lithium values from brines
Pellets of a polycrystalline hydrated alumina, especially Gibbsite, are infused with LiOH to obtain loadings up to 0.33 mol fraction of LiOH in the LiOH/Al(OH) 3 . The so-prepared material is...
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5587133 |
Delithiated cobalt oxide and nickel oxide phases and method of preparing same
LiCoO 2 and LiNiO 2 are fully delithiated electrochemically using solid state electrolytic cells and oxidation resistant electrolytes to yield new phases of CoO 2 and NiO 2 .
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5574197 |
Method of making a stable non-pyrophoric lithium diorganoamide solution
The method of making the stable non-pyrophoric solution containing a lithium diorganoamide of the formula, LiNR'R" wherein R' and R" each have from 2 to 6 carbon atoms, in an inert liquid...
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5567401 |
Method of producing stable metal oxides and chalcogenides and power source
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.
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5466798 |
Synthesis of lithium aminoborohydrides and reactions thereof
The present invention relates to novel, powerful reducing agents, lithium aminoborohydrides which are prepared by addition of BH 3 THF to the corresponding dialkylamine at 25° C. to give the...
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5451383 |
Lithium recovery
In the production of lithium-exchange adsorbents, lithium recovery from spent ion-exchange solutions is achieved with advantageous secondary recovery of lithium from zeolite wash liquor and...
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5419883 |
Lithium aluminum complex hydroxide salt and process for preparation thereof
An lithium aluminum complex hydroxide salt (LAHS) and a process for preparation thereof is provided. The LAHS is represented by the formula; (Al 2 Li(OH) 6 ) n X, mH 2 O wherein X is an...
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5391824 |
Stabilized lithium reagents
An ether free organolithium reagent composition comprising a solution of a lithium alkylamide having 4 to 20 carbon atoms, and lithium alkoxide present in a amount to increase the solubility of the...
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5352270 |
Method for recycling metal containing electrical components
The present invention relates to methods of recycling metal containing electrical components to recover one or more metal values therefrom by comminuting the used metal containing electrical...
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5334334 |
Method of preparing lithium battery electrode compositions
Fine particles of vanadium oxide or compound thereof, respectively represented by the general formulas V 2 O 5 and LiV 3 O 8 , are prepared by freeze-drying a wet mixture containing a precursor....
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5262137 |
Method for recovering lithium chloride
A method for recovery of lithium chloride wherein a dihalogen aromatic compound is reacted with an alkali metal sulfide and/or an alkali metal hydrosulfide in a polar solvent in the presence of...
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H001227 |
Method for immobilizing mixed waste chloride salts containing radionuclides and other hazardous wastes
The invention is a method for the encapsulation of soluble radioactive waste chloride salts containing radionuclides such as strontium, cesium and hazardous wastes such as barium so that they may...
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5219550 |
Production of low boron lithium carbonate from lithium-containing brine
The present invention relates to a novel process for producing, from a lithium-containing brine, a low boron lithium carbonate compound. This compound is particularly useful for conversion to a...
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5135732 |
Method for preparation of LiMn.sub.2 O.sub.4 intercalation compounds and use thereof in secondary lithium batteries
Method is described for the low temperature preparation of the spinel LiMn 2 O 4 phase which is an intercalable compound of interest for use in lithium secondary batteries. This phase can be...
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5131988 |
Method of extracting lithium from aluminum-lithium alloys
An improved method for extracting lithium from aluminum-lithium alloys includes providing an electrorefining cell which contains a cathode comprising a pure molten tin pool and a source of lithium...
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4980136 |
Production of lithium metal grade lithium chloride from lithium-containing brine
The present invention relates to a novel process for producing, from a lithium-containing brine, a substantially pure lithium chloride product. This product is particularly useful for the...
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4959282 |
Cathode active materials, methods of making same and electrochemical cells incorporating the same
Cathode-active material for electrochemial cells is prepared by reacting gamma phase MnO 2 with Li. The molar ratio of Li to MnO 2 is about 0.33 to about 0.43.
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4855059 |
Purification of brines with hydrous metal oxide ion exchangers
A process for the substantial removal of calcium or other divalent ions from natural or industrial brines containing high levels of another ion comprising (a) adjusting the pH of the brine to an...
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4731307 |
Methods for achieving the equilibrium number of phases in mixtures suitable for use in battery electrodes, e.g., for lithiating FeS.sub.2
In a method for preparing lithiated, particulate FeS 2 useful as a catholyte material in a lithium thermal battery, whereby the latter's voltage regulation properties are improved, comprising...
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4723962 |
Process for recovering lithium from salt brines
An improved process is described for recovering lithium from evaporatively concentrated brines. Epsom salt recovered from the brine at about 0° C. is added to the concentrated lithium-containing...
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4704266 |
Method for producing lithium aluminate powders
A method for producing γ-form lithium aluminate powders usable as a material for an electrolyte tile of molten carbonate fuel cells which comprises mixing aluminum alkoxide with one member...
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4655828 |
Separation of metallic lithium
Lithium metal is separated from lithium salts in spent torpedo boiler fuel by solubilizing said salts in a solution of a Lewis acid such as boron trifluoride in a polar solvent such as...
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4637928 |
Method and apparatus for neutralizing reactive material such as batteries
A method and apparatus for treating articles such as batteries in a manner permitting safe disposal thereof, each of the articles comprising a casing having reactive material therein, wherein the...
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4600566 |
Method of lithium isotope separation
A method of lithium isotope separation by using a cryptand resin as an adsorbent is herein disclosed.
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4588566 |
Extraction of lithium from lithium-containing materials
This invention relates to the separation of lithium from lithium-containing materials, primarily ores such as hectoritic montmorillonite, having about 0.02 to 2.0 percent lithium by weight. The...
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4588565 |
Separation of lithium chloride from impurities
Lithium chloride is separated from its mixtures with calcium chloride by preferentially dissolving the lithium chloride in tetrahydrofuran. The separation is achieved since the lithium chloride is...
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4540509 |
Crystalline 3-layer lithium aluminates
Ion exchange resins in the base form, e.g., DOWEX MWA--1--OH ion exchange resin, which contain crystalline Al(OH) 3 , e.g., gibbsite, and/or bayerite, and/or norstrandite, are treated with hot,...
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4526855 |
Process for the production of thermodynamically stable solid ion conductor materials
The present invention provides a process for the production of solid in conductor materials based on the following formula: A 3u +2v+w XuYuZw wherein A is lithium or sodium, X is nitrogen,...
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4477367 |
Crystalline 2-layer lithium-hydroxy aluminates
Crystalline 2-layer LiOH.2Al(OH) 3 .nH 2 O, preferably supported by a porous substrate, is prepared by treating crystalline 2-layer LiX.2Al(OH) 3 .nH 2 O, where X is anion, with a LiOH solution...
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4472362 |
Regeneration of crystalline lithium aluminates
Crystalline 2-layer lithium aluminate, especially when carried in an ion exchange resin, is regenerated for use as an extractor for Li + values in aqueous solution, said regeneration being done by...
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4461714 |
Method of making crystalline 2-layer lithium aluminates in ion exchange resins
The bayerite form of crystalline alumina, Al(OH) 3 , contained within a macroporous ion exchange resin is converted to the gibbsite form of Al(OH) 3 by reaction with hot MgX 2 , where X is halide,...
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