32results about How to "High Li ion conductivity" patented technology

A positive electrode material for a nonaqueous lithium secondary battery and a lithium secondary battery that has superior cycle life and safety and reduced internal resistance of the battery at low temperature is provided. The positive electrode material for a nonaqueous lithium secondary battery comprise a layered structured complex oxide expressed by a composition formula LiaMnxNiyCozMαO2, where 0<a≦1.2, 0.1≦x≦0.9, 0≦y≦0.44, 0.1≦z≦0.6, 0.01≦α≦0.1, and x+y+z+α=1. A diffraction peak intensity ratio between the (003) plane and the (104) plane (I(003) / I(104)) in an X-ray powder diffractometry using a Cu—Kα line in the X-ray source is not less than 1.0 and not more than 1.5.

A method for producing a sulfide solid electrolyte material having a small amount of hydrogen sulfide generation and a high Li ion conductivity. To achieve the above, a method for producing a sulfide solid electrolyte material is provided, including steps of: a providing step for providing a crystallized sulfide solid electrolyte material prepared by using a raw material composition containing Li2S and P2S5; and an amorphizing step for applying amorphization treatment to the crystallized sulfide solid electrolyte material.

A solid electrolyte material represented by Formula 1:L1+2x(M1)1−x(M2)(M3)4  Formula 1wherein 0.25<x<1, L is at least one element selected from a Group 1 element, M1 is at least one element selected from a Group 2 element, a Group 3 element, a Group 12 element, and a Group 13 element, M2 is at least one element selected from a Group 5 element, a Group 14 element, and a Group 15 element, and M3 is at least one element selected from a Group 16 element, and wherein the solid electrolyte material has an I-4 crystal structure.

Provided is a positive electrode for nonaqueous electrolyte secondary batteries, which enables a battery to have a higher output power if used as a positive electrode of the battery, and which causesless deterioration in the battery performance. Provided is a positive electrode for nonaqueous electrolyte secondary batteries, which comprises a positive electrode element that is configured from a positive electrode active material composed of a lithium metal composite oxide and an amorphous coating layer that is formed on the surface of the positive electrode element from a compound containingniobium and lithium, and wherein the compound is a lithium ion conductor. Consequently, lithium ion conductivity in the electrode is able to be improved, and deterioration in the lithium ion conductivity and dielectric properties in the atmosphere is able to be suppressed. In addition, a positive electrode for nonaqueous electrolyte secondary batteries, which is able to achieve a higher output power and is not susceptible to deterioration in the high output performance if handled in the atmosphere can be obtained by using the above-described electrode.

The invention discloses a double-chain polyethylene oxide modified covalent organic framework, a preparation method and an application thereof. The covalent organic framework is obtained by PEG‑n, n‑NHNH 2 (n=1,2,3,6) and 1,3,5-tris(4-formylphenyl)benzene as raw materials, mesitylene and 1,4-dioxane as solvent, acetic acid as catalyst , prepared by solvothermal method. The covalent organic framework of the present invention has good crystallinity and thermal stability, and exhibits good lithium ion conductivity and solid state lithium battery cycle performance at high temperatures.

The invention discloses a solid thin film electrolyte material and a preparation method thereof. The solid thin film electrolyte material has a structure as shown in the formula: Li-(Mn1-Xm1x)-(Til-yM2y)-O, wherein, 0<=x<=1, 0<=y<=1, M1 is selected from at least one of La, Sr, Na, Nd, Pr, Sm, Gd, Dy, Y, Eu, Tb and Ba, and M2 is selected from at least one of Mg, W, Al, Ge, Ru, Nb, Ni, Ta, Co, Fe, Zr, Hf, Fe, Cr and Ga. The solid thin film electrolyte material is obtained by using a sol-gel method or radio frequency magnetron sputtering method. The solid thin film electrolyte material has relatively high Li ion conductivity, relatively low electron conductivity and favorable thermodynamic stability, and is particularly suitable for producing solid lithium ion batteries.