14 results about "Lithium Cation" patented technology

An additive composition comprises phosphate ester anions conforming to a specified structure, aromatic carboxylate anions, optionally cycloaliphatic dicarboxylate anions, aluminum (III) cations, sodium cations, optionally calcium cations, optionally lithium cations, and optionally zinc (II) cations. The anions are present in the additive composition in specified molar percentages. The cations are also present in the additive composition in specified molar percentages.

The invention discloses a lithium-rich cation disordered rock salt positive electrode material as well as a preparation method and application thereof, and belongs to the technical field of preparation of lithium ion battery positive electrode materials. The method comprises the following steps: mixing a lithium source, a vanadium source and a titanium source according to a stoichiometric ratio of a general formula Li1 + xVyTizO2, carrying out ethanol wet grinding and drying, and pressing into a pure inorganic precursor green sheet under the condition of not adding a carbon source; clamping the precursor sheet between two carbon plates, initiating a reaction by using Joule heat conducted by the external carbon plates, executing multi-cycle short-time pulse heating, and realizing ultra-fast high-temperature sintering; and cooling the product, and performing ball-milling compounding on the cooled product and conductive carbon to obtain the target positive electrode material. The material prepared by the method is highly consistent with a product prepared by a traditional solid phase method in crystal structure, microstructure and electrochemical performance, and is an efficient and low-energy-consumption alternative scheme with great industrialization prospects.

The invention relates to a method for preparing a material capable of extracting lithium, comprising the following steps: (a) preparing a geopolymer mixture by mixing (i) an activating solution comprising at least lithium hydroxide and (ii) an aluminosilicate source; (b) curing the geopolymer mixture prepared in step a), thereby obtaining a geopolymer matrix material; and (c) washing the geopolymeric matrix material obtained in step b) so as to remove at least a portion of the lithium cations (Li +) contained in the geopolymeric matrix material and obtain a material capable of extracting lithium The invention also relates to the material thus obtained and to the use thereof.

Disclosed is a conversion composition containing a trivalent chromium cation in an amount of 0.001 g / L to 20 g / L. Also disclosed is a system for treating a metal substrate that includes the conversion composition and a sealing composition comprising a lithium cation. Also disclosed is a method for treating a metal substrate that includes contacting at least a portion of a surface of the substrate with the conversion composition and then contacting at least a portion of the surface of the substrate with the sealing composition. Also disclosed is a substrate obtainable by treatment with the system and / or obtainable by the method of treating.

The present invention relates to a process for producing a solution of lithium cations on the one hand, while producing a molecular sieve having a low lithium content on the other hand, said process comprising providing a lithium exchange molecular sieve which is a molecular sieve that is waste or not suitable for its intended application, the co-produced molecular sieve with low lithium content can be reused as a molecular sieve.

Described herein are tandem methods for producing a lithium-containing product from a lithium-containing solution and systems for performing. A method may involve supplying the lithium-containing solution into a lithium-extraction reactor and applying a negative potential to the working electrode, thereby electrochemically incorporating lithium into the working electrode. The lithium-containing solution may then be replaced with a recovery solution and a positive potential to the working electrode, thereby extracting lithium from the working electrode into the recovery solution. The recovery solution comprising lithium cations is then transferred to a lithium-conversion reactor, and a conversion potential is applied between the electrodes, thereby converting the lithium cations into a lithium-containing product, such as lithium carbonate (Li2CO3), lithium hydroxide (LiOH), lithium chloride (LiCl), and lithium sulfate (Li2SO4). For example, carbon dioxide (CO2) may be pumped through the recovery solution while applying the conversion potential to lithium carbonate (Li2CO3).

Carbon dioxide (CO2) mineralization methods. Methods may comprise: (i) providing a high salinity water comprising at least one monovalent and at least one divalent cation selected from the group consisting of: Mg, Ca, Na, K, and Li cations; (ii) if necessary, increasing the high salinity water pH value, thereby forming a Mg(OH)2 precipitate if Mg cations are present; (iii) separating any formed Mg(OH)2 precipitate from a first supernatant comprising monovalent and / or divalent ions selected form the group consisting of: Ca, Na, K, and Li cations; (iv) if necessary, increasing the pH value of the first supernatant to about 12 or greater; (v) introducing CO2 nanobubbles into the first supernatant, thereby forming a CaCO3 precipitate if Ca cations are present; and (vi) separating any formed CaCO3 precipitate from a second supernatant comprising monovalent ions selected from the group consisting of: Na, K, and Li cations.

Chemical compositions and related methods for synthesizing furans (e.g., oil furans, surfactants) include calcium, magnesium, ammonium, and / or lithium cations and one of several furan derivatives. Methods for synthesizing such furan surfactants containing calcium, magnesium, ammonium, and / or lithium cations can include chemical reagents and purification processes to produce furan surfactants containing calcium, magnesium, ammonium, and / or lithium cations. These furan surfactant compositions can be free of dioxane and ethoxylates.

Disclosed are a system and methods for producing lithium hydroxide directly from natural brine by an electrochemical approach. In one example version of the system, an electrochemical cell operates in two states. In one state, lithium cations (Li+) intercalate into a first electrode from the brine, and sodium cations (Na+) deintercalate from a second electrode into the brine. In another state, lithium cations deintercalate from the first electrode into a dilute lithium hydroxide (LiOH) solution, and sodium cations intercalate to the second electrode from a concentrated sodium hydroxide (NaOH) solution. Hydroxide anions (OH−) transport through an anion exchange membrane to combine with lithium cations (Li+) to form LiOH, continuously increasing its concentration.

A method for processing spent nickel-based cathode material useful in lithium-based batteries, the method comprising: (i) producing an initial mixture containing the spent nickel-based cathode material and a molten salt system comprising cations and anions, wherein the cations comprise lithium cations; (ii) heating the initial mixture to a temperature of 700° C. to 900° C. for at least 1 hour to produce a relithiated cathode material; and (iii) washing the relithiated cathode material to remove any residual salt. In a further method, the cations comprise nickel and lithium cations and the anions comprise chloride or bromide anion in combination with at least one of nitrate, sulfate, and carbonate anions in further combination with hydroxide anion, wherein the method results in upcycling of the nickel-based cathode material to produce a version of said relithiated cathode material having a greater nickel content.

Methods and systems directed to recovery of lithium (e.g., lithium salts) from liquid streams are provided. In some embodiments, methods relate to obtaining lithium (e.g., as a solid lithium salt) by removing at least a portion of liquid from a feed stream to form a concentrated stream with respect to solubilized lithium cations. Liquid removal may include transporting at least a portion of the feed stream to a membrane separator and / or a humidifier. Some methods include removing impurities (e.g., non-lithium cations) from the concentrated stream (e.g., via precipitation and / or crystallization). In some embodiments, solutions containing solubilized lithium cations and anions are electrochemically-treated such that first solubilized anions are replaced with second, different anions. In some embodiments, solid lithium salt containing at least a portion of the lithium cations and the second anions is obtained (e.g., via precipitation and / or crystallization following concentration of the electrochemically-treated solution in a humidifier).

The invention relates to an electrochemical cell comprising: —at least one anode comprising metallic lithium or a lithium alloy or at least one anode comprising a current collector at least partially covered with metallic lithium deposited after at least one charge of the cell, the cell not containing metallic lithium at the time of its manufacture, —at least one cathode, —a liquid or gelled electrolyte composition comprising: a) a solvent comprising: i) either a mixture of 1,1,1,3,3,3-hexafluoro-2-methoxypropane (HFMP) and / or 1,1,1,3,3,3-hexafluoro-2-(fluoromethoxy)propane (HFMFP), ethylene monofluorocarbonate (F1EC) and 2,2,2-trifluoroethyl methyl carbonate (F3EMC), ii) or a mixture of 1,1,1,3,3,3-hexafluoro-2-methoxypropane (HFMP) and / or 1,1,1,3,3,3-hexafluo-ro-2-(fluoromethoxy)propane (HFMFP), ethylene monofluorocarbonate (F1EC) and 2,2,2-trifluoroethyl acetate (F3EA), b) at least one salt whose cation is the lithium cation, c) lithium difluorophosphate LiPO2F2 in an amount representing from 0.05 to 5% of the mass of the combination made up of the solvent and said at least one dissolved lithium salt.

The present invention relates to a lithium cation exchange membrane, for water electrolysis, having high lithium cation conductivity, and a water electrolysis system using same, and a water electrolysis system using a lithium cation exchange membrane (LEM) for water electrolysis according to the present invention, comprising a hydrophilic polymer solution and a monomer solution having a sulfonic acid group, is an economically feasible water electrolysis system achieving lower costs than conventional proton exchange membrane (PEM) water electrolysis and a higher current density than alkali water electrolysis.

------ Hydrophobic Organic Liquid Composition for the Selective Extraction of a Lithium Salt The present invention relates to a hydrophobic organic liquid composition for the selective extraction of a diionic lithium salt comprising a lithium cation and an anion complementary to the lithium cation selected in particular from Cl-, I-, Br-, CN-, NO3-, HCO3- from a lithium-rich brine to be treated, said composition comprising (A) at least one compound extracting lithium cation, selected from compounds of formula: in which R1, R2, R3, R4, R5 and R6 are as defined in the description; (B) at least one organic, protic and hydrophobic compound solvating the anion complementary to the lithium cation; and (C) at least one hydrophobic polar organic diluent having a flash point at atmospheric pressure above 60°C, preferably above 75°C, more preferably above 90°C.