Method of manufacturing sulfide-based solid electrolyte through wet process

A solid electrolyte, sulfide technology, applied in the direction of solid electrolyte, sulfide conductor, electrolyte, etc., can solve the problems of uneven physical properties and uneven application of physical energy, and achieve the effect of low reproducibility

Active Publication Date: 2018-05-25
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Because the material easily sticks to the wall surface of the container used in mechanical grinding, physical energy is not uniformly applied to the material, thus producing a difference in amorphization between sulfide-based solid electrolyte particles (powders), and further, sulfide-based The physical properties of solid electrolytes become inhomogeneous during crystallization by heat treatment

Method used

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  • Method of manufacturing sulfide-based solid electrolyte through wet process
  • Method of manufacturing sulfide-based solid electrolyte through wet process
  • Method of manufacturing sulfide-based solid electrolyte through wet process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] In addition to performing only the steps of the example (S 3 ) except for primary drying without secondary drying, a sulfide-based solid electrolyte containing nickel (Ni) element was produced by the same method as in Examples.

Embodiment 2

[0089] (1) Determination of Li 2 S:P 2 S 5 :Ni 3 S 2 The composition ratio of is 90mol:30mol:10mol to prepare 45g of the mixture.

[0090] (2) The mixture and 2300 g of zirconia balls were poured into a 1000 cc container of a planetary ball mill. The mixture was amorphized by milling for 20 hours.

[0091] (3) The amorphized mixture was crystallized by heat treatment at 260° C. for 2 hours to obtain a sulfide-based solid electrolyte containing nickel (Ni) element.

[0092] Evaluation of Physical Properties

[0093] (Amorphization Evaluation of Examples)

[0094] In manufacturing the sulfide-based solid electrolyte according to the example, when a solvent (xylene) was added so that the solid content of the slurry became 10% by weight, it was evaluated whether the mixture was amorphized by wet milling. To this end, X-ray diffraction spectroscopy (XRD) was performed on the mixture contained in the amorphized slurry. The result is shown in figure 1 middle.

[0095] refe...

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Abstract

The invention provides a method of manufacturing a sulfide-based solid electrolyte through a wet process. The method includes preparing a slurry by adding a solvent to a mixture including lithium sulfide and a sulfide of a group 14 or group 15 element and amorphizing the mixture by milling the slurry. The slurry is dried in order to remove the solvent. The dried mixture is crystallized by heat-treating to form the sulfide-based solid electrolyte.

Description

technical field [0001] The present disclosure relates to a method of manufacturing a sulfide-based solid electrolyte through a wet process. Background technique [0002] Currently, secondary batteries have been widely used in large equipment (such as vehicles, power storage systems) to small equipment (such as mobile phones, video cameras, laptop computers). [0003] As application fields of secondary batteries have become wider, demands for improved safety and high performance of batteries have increased. [0004] Lithium secondary batteries, which are one type of secondary batteries, have the benefit of higher energy density and larger capacity per unit area than nickel manganese or nickel cadmium batteries. [0005] However, most electrolytes used in related art lithium secondary batteries are liquid electrolytes such as organic solvents. Therefore, there have always been safety concerns such as electrolyte leakage and the resulting fire risk [0006] Therefore, recent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0562H01M10/052
CPCH01M10/052H01M10/0562H01M2300/0068C03C3/321C03C4/14C03C10/00H01B1/10H01M2300/002H01M10/0525Y02E60/10Y02P70/50Y02T10/70C04B35/547C04B2235/446C04B2235/6567
Inventor 成柱咏李豪泽林栽敏张容准
Owner HYUNDAI MOTOR CO LTD
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