Preparation method of argyrodite

A technology for preparing solution, phosphorus sulfide, applied in the step of preparing solution S1 as solid electrolyte, quality and form, solution S1 contains solvent and P substance in at least 3-form, capable of solving damage, short circuit, heat generation, etc. question

Pending Publication Date: 2022-07-08
SOLVAY SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lithium dendrites form and pass through the liquid electrolyte medium which can cause a short circuit and generate heat that can cause an accident leading to serious injury

Method used

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  • Preparation method of argyrodite
  • Preparation method of argyrodite
  • Preparation method of argyrodite

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Embodiment Construction

[0022] The method of the present invention is based on the preparation of a homogeneous solution comprising ionic species. Therefore, the method of the present invention does not involve a suspension.

[0023] Therefore, Li 6 PS 5 All species involved in the preparation of X are dissolved in solvent and in the form of ionic species as mentioned above.

[0024] An essential feature of the method of the invention is the temperature T1 as defined above. Therefore, the method of the present invention is carried out at low temperature, notably in order to stabilize (PS) in solution 4 ) 3- substance and thus obtain solution S1 at the required temperature.

[0025] Once solution S1 has been prepared, a step for removing at least a portion of the solvent is performed. Li is then obtained as a solid, preferably as a powder 6 PS 5 X.

[0026] Preferably, the term "at least part of the solvent" means at least 50% by weight, preferably at least 60% by weight of the solvent.

[0...

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PUM

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Abstract

The invention relates to a novel method for producing lithium argyrodite, as well as to the products obtainable by said method, and to the use thereof, in particular as solid electrolytes.

Description

[0001] The present invention relates to a method for the preparation of lithium arginite, as well as the product as obtained, and the use of said product, in particular as a solid electrolyte. Background technique [0002] Lithium batteries are used to power portable electronics and electric vehicles due to their high energy and power density. Conventional lithium batteries utilize liquid electrolytes consisting of lithium salts dissolved in organic solvents. Since organic solvents are flammable, the aforementioned systems raise safety concerns. Lithium dendrites forming and passing through the liquid electrolyte medium can cause short circuits and generate heat, resulting in accidents that can lead to serious injury. [0003] Nonflammable inorganic solid electrolytes offer a solution to the safety problem. In addition, the mechanical stability of the nonflammable inorganic solid electrolyte helps to suppress lithium dendrite formation, prevent self-discharge and heat genera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01D15/00
CPCC01D15/00H01M10/0562H01M10/052H01M2300/0068H01M2220/20Y02E60/10
Inventor M-D·布拉伊达L·德伦康J-D·康彭T·勒默希埃尔
Owner SOLVAY SA
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