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Positive Electrode Active Material for High Voltage Comprising Lithium Manganese-Based Oxide and Preparation Method Thereof

A cathode active material, lithium-manganese-based technology, applied in the field of high-voltage cathode active materials and their preparation, to achieve the effect of excellent performance

Active Publication Date: 2019-10-25
LG ENERGY SOLUTION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above technologies have limitations in continuously increasing the operating voltage to meet the ever-increasing demand

Method used

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  • Positive Electrode Active Material for High Voltage Comprising Lithium Manganese-Based Oxide and Preparation Method Thereof
  • Positive Electrode Active Material for High Voltage Comprising Lithium Manganese-Based Oxide and Preparation Method Thereof
  • Positive Electrode Active Material for High Voltage Comprising Lithium Manganese-Based Oxide and Preparation Method Thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0089] 30g Li was 1.15 Ni 0.1 Co 0.1 Mn 0.65 O 2 and by 0.15g Li 1.4 Al 0.2 Ti 1.8 Si 0.2 P 2.8 O 12 Composition of Li-ion Conductive Glass-Ceramic Solid Electrolytes with ZrO 2 were mixed together for 1 hour, and the mixture was heat-treated in a furnace at 650 °C for 5 hours to produce Li-coated 1.4 Al 0.2 Ti 1.8 Si 0.2 P 2.8 O 12 Li 1.15 Ni 0.1 Co 0.1 Mn 0.65 O 2 Positive active material.

Embodiment 2

[0091] A positive electrode active material was fabricated in the same manner as in Example 1, except that 0.15 g Li was used 1.4 Al 0.2 Ti 1.8 Si 0.2 P 2.8 S 12 Lithium-ion conductive glass-ceramic solid electrolyte instead of 0.15gLi 1.4 Al 0.2 Ti 1.8 Si 0.2 P 2.8 O 12 .

Embodiment 3

[0093] A positive electrode active material was fabricated in the same manner as in Example 1, except that 0.15 g Li was used 1.4 Al 0.2 Ge 1.8 Si 0.2 P 2.8 O 12 Lithium-ion conductive glass-ceramic solid electrolyte instead of 0.15gLi 1.4 Al 0.2 Ti 1.8 Si 0.2 P 2.8 O 12 .

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Abstract

The present invention relates to an anode active material including lithium manganese-based oxide of excess lithium. The lithium manganese-based oxide has a composition represented by chemical formula1, Li_(1+x)M_yMn_(1-x-y)O_(2-z)Q_ z(1), and is formed with a lithium ion conductive glass-ceramic solid electrolyte layer including at least one selected from a group consisting of a thio-lithium super ionic conductor (thio-LISICON), a lithium super ionic conductor (LISICON), Li_2S-SiS_2-Li_4SiO_4, and Li_2S-SiS_2-P_2S_5-Lil, on a particle surface thereof. In the chemical formula 1, 0<x<=0.2, 0<y<=0.2, 0<=z<=0.5, M is one or more elements selected from a group consisting of Al, Mg, Ni, Co, Fe, Cr, V, Ti, Cu, B, Ca, Ga, In, Ru, Zn, Zr, Nb, Sn, Mo, Sr, Sb, W, Ti and Bi, and Q is one or more elements selected from a group consisting of P, N, F, S and Cl.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims the filing date of Korean Patent Application No. 10-2017-0124381 filed on September 26, 2017 and Korean Patent Application No. 10-2018-0091426 filed on August 6, 2018 with the Korean Intellectual Property Office Interest, the disclosure of which is hereby incorporated by reference. technical field [0003] The present invention relates to a high-voltage positive electrode active material comprising a lithium manganese-based oxide and a preparation method thereof. Background technique [0004] With technological development and increased demand for mobile devices, the need to use secondary batteries as an energy source is rapidly increasing. Among these secondary batteries, lithium secondary batteries having high energy density and operating potential, long cycle life, and low self-discharge rate have become commercially available and widely used. [0005] In addition, with increasing concerns a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/505H01M4/62H01M10/052
CPCH01M4/36H01M4/505H01M4/62H01M10/052H01M4/366H01M10/0562H01M2004/028H01M4/0404H01M4/131H01M4/1391Y02E60/10H01M4/624H01M4/362H01M4/525H01M10/0525H01M2300/0071
Inventor 韩玑范黄进泰郑王谟柳玟圭赵治皓朴星彬朱仁晟许赫朴英旭柳泰求
Owner LG ENERGY SOLUTION LTD
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