Idemitsu Kosan Company, Limited

Naoya Masuda

Hironari Kimpara

Atsushi Yao

Minoru Senga

Takayoshi Kambara

Shota Totsuka

Katsuhito Kondo

Atsushi Sato

Futoshi Utsuno

Hiroyuki Tamura

Takashi Umeki

Yusuke Iseki

Junpei Maruyama

Takehiro Fujita

Akito Takashima

A method of production of a solid electrolyte having an Argyrodite-type crystal structure, including steps of mixing raw materials such that lithium (Li), phosphorus (P), sulfur (S), oxygen (O), and halogen (X) satisfy the following formulas (11) to (14) to obtain a mixture; and heating the mixture:4.8≤Li/P≤5.3  (11)3.8≤S/P≤4.4  (12)0<O/P≤0.8  (13)1.0<X/P≤2.0  (14)

Solid electrolyte and method for producing same

Provided is a method for producing a sulfide solid electrolyte having a high purity as side reaction hardly occurs, and having a high ionic conductivity, in a simplified manner. The method is for producing a sulfide solid electrolyte containing a lithium atom, a sulfur atom, a phosphorus atom and a halogen atom, comprising separately preparing a complex (1) containing a sulfide that contains a lithium atom, a sulfur atom and a phosphorus atom, as a constituent element, and a complex (2) containing a halide that contains a lithium atom and a halogen atom, as a constituent element, and mixing the complex (1) and the complex (2).

Method for producing sulfide solid electrolyte

A method for producing a sulfide solid electrolyte having an argyrodite-type crystal structure may involve: mixing a raw material containing elemental phosphorus at an integrated power of 0.5 kWh/kg or more, and heat-treating a precursor obtained in the mixing at 350 to 500° C.

Method for producing sulfide solid electrolyte having argyrodite-type crystal structure

A method for producing a solid electrolyte having an argyrodite-type crystal structure, the method comprising:

Method for producing solid electrolyte having argyrodite type crystal structure

A method for producing a solid electrolyte comprising feeding a solid electrolyte raw material-containing liquid comprising: a solid electrolyte raw material comprising lithium, phosphorus, sulfur and chlorine; and a solvent, to a liquid or gas medium having a temperature higher than the boiling point of the solvent, thereby evaporating the solvent and reacting the solid electrolyte raw material to precipitate a solid electrolyte having an argyrodite-type crystal structure.

Method for producing solid electrolyte

Growing community of inventors

Sodegaura, Japan

Naoya Masuda