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Solid electrolyte for all-solid battery and method of preparing same

A solid electrolyte and all-solid-state battery technology, applied in solid electrolytes, electrolytes, battery electrodes, etc., can solve the problems of high material cost, increase battery area, etc., and achieve the effect of safe and cheap preparation

Active Publication Date: 2019-06-28
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High material cost is a barrier to increasing battery area in response to demand for high-capacity energy storage technologies

Method used

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  • Solid electrolyte for all-solid battery and method of preparing same
  • Solid electrolyte for all-solid battery and method of preparing same
  • Solid electrolyte for all-solid battery and method of preparing same

Examples

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[0085] (S1) By mixing sulfur elemental powder (manufactured by Sigma Aldrich, sulfur), phosphorus elemental powder (manufactured by SigmaAldrich, phosphorus), lithium elemental powder (manufactured by FMC, lithium powder), and lithium chloride powder (manufactured by Sigma Aldrich, LiCl) to obtain a powder mixture.

[0086] Specifically, 11.9 g of sulfur elemental powder, 2.3 g of phosphorus elemental powder, 2.6 g of lithium elemental powder, and 3.1 g of lithium chloride were weighed and mixed to obtain a powder mixture. The molar ratio of raw materials is Li:P:S:LiCl=5:1:5:1.

[0087] (S2) The powder mixture was mixed with 165g of xylene solvent, and then placed in a planetary ball mill together with 1150g of zirconia balls. Thereafter, milling was performed at about 360 RPM, thereby amorphizing the powder mixture.

[0088] (S3) The amorphized powder mixture was crystallized by heat treatment at a temperature of about 500° C. for 4 h, thereby producing a solid electrolyte...

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Abstract

Disclosed is a solid electrolyte for an all-solid battery and a method of preparing the same. Particularly, the solid electrolyte may have an argyrodite-type crystal structure.

Description

technical field [0001] The invention relates to a solid electrolyte for an all-solid battery (all-solid battery) and a preparation method thereof. The solid electrolyte may have an argyrodite-type crystal structure. Background technique [0002] Secondary batteries have been widely used in large devices such as vehicles and power storage systems and in small devices such as mobile phones, camcorders, laptop computers, and the like. [0003] As application fields of secondary batteries have expanded, there has been an increasing demand for improved safety and performance of batteries. For example, lithium secondary batteries have higher energy density and larger capacity per unit area than nickel-manganese batteries or nickel-cadmium batteries. [0004] However, most electrolytes used in conventional lithium secondary batteries are liquid electrolytes including organic solvents. Therefore, safety issues such as electrolyte leakage and fire risk resulting therefrom have bee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01D15/00C01D15/04H01M10/0562H01M10/0525
CPCC01B17/22H01M10/052H01M10/0562C01P2002/72Y02E60/10H01B1/10C01D15/00H01M2300/0068C01P2002/30H01M4/136H01M4/364H01M4/5815H01M4/388H01M2300/0091H01M10/0525H01M4/0471H01M2300/004H01M10/0569
Inventor 成柱咏张容准吴必建尹龙燮林栽敏金思钦闵泓锡
Owner HYUNDAI MOTOR CO LTD
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