Production method for solid electrolyte and electrolyte precursor
AssigneeIdemitsu Kosan Co., Ltd.
InventorsTakayoshi Kambara, Nobuhito Nakaya, Hiroaki Yamada
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Abstract
The present invention provides a production method of a solid electrolyte containing a lithium element, a sulfur element, a phosphorous element, and a halogen element, wherein the solid electrolyte has a high ionic conductivity and capable of suppressing hydrogen sulfide by adopting a liquid-phase method, wherein the method includes mixing a complexing agent having an ester group and also having at least one branch with a solid electrolyte raw material. The present invention also relates to an electrolyte precursor.
Claims18
A production method of a solid electrolyte containing a lithium element, a sulfur element, a phosphorous element, and a halogen element, the method comprising:
- mixing a complexing agent having an ester group and also having at least one branch with a solid electrolyte raw material, and drying to obtain an electrolyte precursor comprising the complexing agent, a lithium element, a sulfur element, a phosphorus element, and a halogen element;
- heating the electrolyte precursor to obtain an amorphous solid electrolyte;
- and
- heating the amorphous solid electrolyte in an inert gas atmosphere or a reduced pressure atmosphere to obtain a crystalline solid electrolyte,
- wherein the crystalline solid electrolyte is in a form of particles, and
- wherein the halogen element comprises bromine and iodine.
A production method of a solid electrolyte containing a lithium element, a sulfur element, a phosphorous element, and a halogen element, the method comprising:
- mixing a complexing agent having an ester group and also having at least one branch with a solid electrolyte raw material, and drying to obtain an electrolyte precursor comprising the complexing agent, a lithium element, a sulfur element, a phosphorus element, and a halogen element;
- heating the electrolyte precursor to obtain an amorphous solid electrolyte;
- and
- heating the amorphous solid electrolyte at a temperature of 130° C. to 300° C. in an inert gas atmosphere or a reduced pressure atmosphere to obtain a crystalline solid electrolyte,
- wherein the halogen element comprises bromine and iodine.
A production method of a solid electrolyte containing a lithium element, a sulfur element, a phosphorous element, and a halogen element, the method comprising:
- mixing a complexing agent having an ester group and also having at least one branch with a solid electrolyte raw material, and drying to obtain an electrolyte precursor comprising the complexing agent, a lithium element, a sulfur element, a phosphorus element, and a halogen element, wherein a content of the solid electrolyte raw material is 5 g to 300 g relative to an amount of one liter of the complexing agent;
- heating the electrolyte precursor to obtain an amorphous solid electrolyte;
- and
- heating the amorphous solid electrolyte in an inert gas atmosphere or a reduced pressure atmosphere to obtain a crystalline solid electrolyte,
- wherein the halogen element comprises bromine and iodine.
Dependencies are inferred from the claim text.