A method of preparing a lithium lanthanum zirconate (LLZO) cubic garnet material is provided which comprises the following steps: (a) milling a slurry comprising one or more precursor compounds in an aqueous medium, wherein the one or more precursor compounds comprise lithium, lanthanum, zirconium and optionally one or more dopant elements, to provide a milled slurry; (b) spray drying the milled slurry to provide a spray-dried powder; and (c) annealing the spray-dried powder. The resultant LLZO cubic garnet material may be used as a lithium ion conductive solid electrolyte in secondary lithium-ion batteries.

A SCM-33 molecular sieve has a schematic chemical composition as shown in the formula “SiO.sub.2.Math.1/x XO.sub.1.5.Math.m MO.sub.0.5”, wherein X is a framework trivalent element, the Si/X molar ratio x is ≥5, M is a framework equilibrium cation, and the M/Si molar ratio is 0 <m≤1. The molecular sieve is a novel molecular sieve with RTE topology and the molecular sieve requires short preparation time, involves a low synthesis cost and can be used as adsorbent or catalyst.

The present disclosure relates to the technical field of lithium ion batteries. Disclosed are a multi-element positive electrode material, and a preparation method therefor and the application thereof.

An anode active material for a lithium secondary battery is provided which includes a composite including: a silicon-based material including a lithium silicate; and a lithium-containing phosphate, wherein a peak intensity ratio B/A is 0.01 to 0.5, wherein A is a peak intensity at 2θ=28.5°, and B is a peak intensity at 2θ=22.3°, when an X-ray diffraction (XRD) analysis is performed using a Cu—Kα ray.

A cathode active material precursor for a lithium secondary battery has a structure of a nickel composite hydroxide. A first peak intensity ratio represented by Equation 1 is 0.5 or more, and a second peak intensity ratio represented by Equation 2 is 0.7 or more. A cathode active material and a lithium secondary battery having a stabilized crystal structure are provided using the cathode active material precursor.

A lithium secondary battery is produced by employing a charging method where a positive electrode upon charging has a maximum achieved potential of 4.3 V (vs. Li/Li.sup.+) or lower. The lithium secondary battery contains an active material including a solid solution of a lithium transition metal composite oxide having an α-NaFeO.sub.2-type crystal structure. The solid solution has a diffraction peak observed near 20 to 30° in X-ray diffractometry using CuKα radiation for a monoclinic Li[Li.sub.1/3Mn.sub.2/3]O.sub.2-type before charge-discharge. The lithium secondary battery is charged to reach at least a region with substantially flat fluctuation of potential appearing in a positive electrode potential region exceeding 4.3 V (vs. Li/Li.sup.+) and 4.8 V (vs. Li/Li.sup.+) or lower. A dischargeable electric quantity in a potential region of 4.3 V (vs. Li/Li.sup.+) or lower is 177 mAh/g or higher.

The present invention relates to the synthesis of molecular sieves of the STT and ITE framework types using, as structure directing agent Q, [L(DETA)2].sup.2+ cation or [L(TEPA)].sup.2+ cation, or a mixture thereof, where L is a divalent metal cation comprising at least one of Ni, Co and Mn and DETA is diethylene triamine and TEPA is tetraethylene pentamine.

Various lithium cobalt oxides materials having a chemical formula of Li.sub.xCo.sub.yO.sub.z, and method and apparatus of producing the various lithium cobalt oxides materials are provided. The method includes adjusting a molar ratio M.sub.LiSalt:M.sub.CoSalt of a lithium-containing salt, and a cobalt-containing salt within a liquid mixture to be equivalent to a ratio of x:y, drying a mist of the liquid mixture in the presence of a gas to form a gas-solid mixture, separating the gas-solid mixture into one or more solid particles of an oxide material, and annealing the solid particles of the oxide material in the presence of another gas flow to obtain crystallized particles of the lithium cobalt oxide material. The process system has a mist generator, a drying chamber, one or more gas-solid separator, and one or more reactors.

A mixed conductor, a method of preparing the same, and a cathode, a lithium-air battery, and an electrochemical device each including the mixed conductor. The mixed conductor is represented by Formula 1 and having electronic conductivity and ionic conductivity:

Li.sub.xMO.sub.2-δ  Formula 1 wherein, in Formula 1, M is a Group 4 element, a Group 5 element, a Group 6 element, a Group 7 element, a Group 8 element, a Group 10 element, a Group 11 element, a Group 12 element, or a combination thereof, and 0<x<1 and 0≤δ≤1 are satisfied.

A mixed conductor represented by Formula 1:
A.sub.4±xTi.sub.5−yG.sub.zO.sub.12−δ  Formula 1 wherein, in Formula 1, A is a monovalent cation, G is at least one of a monovalent cation, a divalent cation, a trivalent cation, a tetravalent cation, a pentavalent cation, or a hexavalent cation, with the proviso that G is not Ti or Cr, wherein 0<x<2, 0.3<y<5, 0<z<5, and 0<δ≤3.