38 results about "Lithium Cation" patented technology

Metal oxide structures, devices, and fabrication methods are provided. In addition, applications of such structures, devices, and methods are provided. In some embodiments, an oxide material can include a substrate and a single-crystal epitaxial layer of an oxide composition disposed on a surface of the substrate, where the oxide composition is represented by ABO₂ such that A is a lithium cation, B is a cation selected from the group consisting of trivalent transition metal cations, trivalent lanthanide cations, trivalent actinide cations, trivalent p-block cations, and combinations thereof, and O is an oxygen anion. The unit cell of crystal structure of the oxide composition can be characterized by first layer of a plane of lithium cations and a second layer of a plurality of edge-sharing octahedra having a B cation positioned in a center of each octahedron and an oxygen anion at each corner of each octahedron. The first layer and the second layer of the unit cell are alternatingly stacked along one axis of the unit cell. Other aspects, features, and embodiments are also claimed and described.

The invention belongs to the technical field of ion selective separators, and in particular relates to an ion selective separator for a lithium sulfur secondary battery, and a preparation method and an application method of the ion selective separator. According to the ion selective separator provided by the invention, the separator of the lithium sulfur battery is made from an ion selective material or a compound structure of the ion selective material, and the shortcomings of quite low charging and discharging efficiency and quite poor battery performance stability caused by the dispersion of polysulfide of an original lithium sulfur battery between the anode and the cathode are conquered. As the selective transmission of the lithium cation is allowed to transmit and the transmission of the polysulfide anion is blocked in an electrolyte system of the lithium sulfur battery, the whole electrochemical performance of the battery system is improved. Targeted at that the original separator system only provides the single type function of electron insulation between the anode and the cathode, the ion selective separator provided by the invention can simultaneously achieve the two functions of electron insulation and ion selective transmission and has the potential to provide a new solution scheme for the technical obstacles of polysulfide migration inhibition and the like of the lithium sulfur battery, and the practicability of the sulfur in the lithium sulfur secondary battery can be promoted with a high-capacity anode material used in combination.

The present invention relates to a thermal energy storage material (TESM) system (and associated methods). The TESM system comprises i) a container having a wall surface; and ii) a TESM in at least partial contact with the wall surface. The TESM may include, consist essentially of, or consist of a metal containing compound comprising at least two different metal cations and one or more polyatomic anions. The at least two metal cations may include lithium cations. The TESM may have a liquidus temperature, T_L, from about 100° C. to about 250° C. The TESM may exhibits a heat storage density from 300° C. to 80° C. of at least 1 MJ/l. The TESM system may be free of water. If any water is present in the TESM system, the water concentration preferably is less than about 10 wt. %. Preferably, the TESM system is generally resistant to corrosion at temperatures of about 300° C.

Disclosed is a composition comprising a polyamide composition comprising nylon-66 or nylon 66/6T, and optionally nylon-6, nylon-610, nylon-612, nylon-11, nylon-12, an ionomer composition comprising at least one ethylene acid copolymer wherein 30 to 90% of the total acid functionalities are neutralized to salts with a mixture of zinc cations and sodium or lithium cations, wherein the salts comprise from 20 to 90% equivalents of zinc; and optionally reinforcing filler. Articles prepared from the composition exhibit improved calcium chloride salt stress crack resistance over polyamide compositions not containing the ionomer.

Method and system on board an aircraft for the production of an oxygen-enriched gas stream from an oxygen/nitrogen gas mixture, particularly air, comprising at least one adsorber containing at least one adsorbent for adsorbing at least some of the nitrogen molecules contained in the oxygen/nitrogen feed mixture, characterized in that the adsorbent comprises a faujasite-type zeolite, having a Si/Al ratio of 1 to 1.50, exchanged to at least 80% with lithium cations. Aircraft equipped with such a system, in particular an airliner, especially an airliner of the long-range, large-capacity type.

A lithium sulfur secondary battery includes a positive electrode containing a sulfur-based positive electrode active substance, an electrolytic solution, a negative electrode containing a negative electrode active substance that occludes and releases lithium, and a polymeric film that covers a surface of the positive electrode and allows lithium cations to pass but does not allow polysulfide anions to pass.

2:1 cocrystals of amino acids and Li+ salts crystallize from hot water to afford water stable cationic networks based upon tetrahedral lithium cations: bilayered square grids, a lithium zeolitic metal-organic material (LiZMOM) and several lithium diamondoid metal-organic materials (LiDMOMs). The compositions may be used as a pharmaceutical for the treatment of suicidality and other disorders that require lithium to penetrate the blood brain barrier and exert therapeutic effects in the CNS. Advantageously, the novel cocrystal forms described herein may be used to lower the oral dose required to achieve therapeutic concentrations of lithium in the brain, thus reducing the peripheral toxicity and potentially broadening the therapeutic index in comparison to conventional lithium forms.

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.

There is disclosed a process for making a mono-lithium salt of 5-sulfoisophthalic acid (LiSIPA) having less than 200 ppm sulfate. The process uses a reaction mixture of acetic acid, water, a lithium cation producing compound, and 5-sulfoisophthalic acid. The reaction mixture is heated to reflux, cooled, filtered and washed to obtain a high quality LiSIPA having less than 200 ppm sulfate. Also disclosed is a high quality mono-lithium salt of 5-sulfoisophthalic acid having less than 200 ppm sulfate.

The invention relates to a lithium ion battery Li3MnO4 positive material doped with vanadium and a preparation method thereof. The chemical formula of the lithium ion battery Li3MnO4 positive material is Li3Mn(1-x)VxO4, wherein x is more than or equal to 0.1 and smaller than or equal to 0.4. The preparation method comprises the following steps: 1) converting a KMnO4 solution into a LiMnO4 solution through lithium cation exchange resin, carrying out vacuum drying on the LiMnO4 solution to obtain LiMnO4.3H2O powder; 2) according to the stoichiometric ratio, weighing a lithium source, a manganese source and a vanadium source, fully mixing and grinding, calcining, grinding for one time at an interval being every 10DEG C in a range from 70 to 120DEG C, carrying out heat preservation for 1 hour after grinding at 125DEG C; raising the temperature to 170 DEG C and carrying out the heat preservation for 2.5 hours. The preparation method disclosed by the invention has the characteristics that (1) the preparation method has a simple process and a short reaction period, saves the cost and is easy to control; (2) through the doping of appropriate amount of the vanadium, the impedance is reduced to a certain extent, so that the discharge performance of the material is improved.

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 conversioncomposition 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 substratewith 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 invention discloses a preparation method of a lithium/sulfur rechargeable battery electrolyte. An inorganic salt containing lithium cations or an organic salt is used as the electrolyte to be added into an organic solvent, constant-temperature stirring is performed for sufficient dissolution, the concentration of the electrolyte is controlled within the range of 0.01-6 mol/L, elemental sulfur and elemental lithium are added into the organic solvent, constant-temperature stirring is performed to achieve sufficient reaction and dissolution, standing is performed and then a supernate is taken to be used as the electrolyte. The electrolyte can stably exist between positive and negative electrodes of a battery, has the high lithium ion concentration and high conductivity, can sufficiently utilize positive and negative active materials, and can remarkably improve the cycle performance and the coulombic efficiency of the lithium/sulfur battery.

Provided are a high-nickel single-crystal ternary precursor and a preparation method thereof. The preparation method comprises the following steps of: preparing a mixed salt solution from Ni < 2 + >, Co < 2 + >, Mn < 2 + > and potassium trioxalato (III) acid according to the general formula, the molar ratio of Mn < 3 + > to Mn < 2 + > of the potassium trioxalato (III) acid is 2-4, primary particles of secondary particles are refined, and the specific surface area is increased. adding the mixed salt solution, a precipitant solution and a complexing agent solution into a reaction kettle, and reacting to generate high-nickel single-crystal ternary precursor slurry; and carrying out filter pressing, washing and drying to obtain the high-nickel single crystal ternary precursor. The primary particles are sheet-shaped, and the thickness is 50-110 nm. The technical problems of material capacity attenuation and inappropriate primary particle thickness caused by mixed arrangement of nickel and lithium cations in the subsequent mixed calcining process of the existing high-nickel single crystal ternary precursor and a lithium source are solved.

An electrochemical cell is disclosed comprising a carbonate:nitrile type solvent mixture based electrolyte. The electrolyte may comprise an alkali salt and/or at least one polymer additive. The alkali salt cation may be a lithium cation and/or the alkali salt anion may comprise an oxalato-borate group. The electrolyte may further comprise one or more electrolyte additives, which may be an SEI improving additive. The anode may comprise carbon. The anode may be an alkali metal anode. The operating voltage and energy density performance of the disclosed invention is at the same level as the performance of presently market—leading battery cells, thereby these disclosed improvements do not come at the expense of battery performance. The utility of the herein disclosed battery electrolyte allows stable cycling of advanced Li-ion battery electrodes, an extended operating temperature range and improves battery safety by making the electrolyte less reactive and volatile than conventional LiPF6 electrolyte salt in carbonate solvents.