Samsung Electronics Co., Ltd.

Nobuya Machida

Yuichi Aihara

Tomoyuki Tsujimura

Seitaro Ito

Yuich Aihara

A method of preparing a solid electrolyte and an all-solid battery including a solid electrolyte prepared by the method, the method including: contacting a first solvent and a first starting material comprising an alkali metal, sulfur, phosphorus, an element M, or a combination thereof to form a first solution; precipitating a first precursor from the first solution; contacting a second solvent, the first precursor, and a second starting material comprising an alkali metal, sulfur, phosphorus, an element M, or a combination thereof to form a second solution; precipitating a second precursor from the second solution; and heat treating the second precursor to prepare the solid electrolyte, wherein the element M comprises an element of Group 14 of the Periodic Table of the Elements, and the element M and the alkali metal in the first starting material and the second starting material are the same or different.

Method of preparing solid electrolyte and all-solid battery including solid electrolyte prepared by the method

A method of preparing a sulfide solid electrolyte, the method including: first contacting a starting materials including LiS, PS, and LiI in a first solvent to provide a precursor; and second contacting the precursor with a second solvent to prepare the sulfide solid electrolyte, wherein the first solvent includes a C-Calkyl group or a cyclic ether compound which is unsubstituted or substituted with a C-Calkoxy group, and the second solvent includes a C-Chydrocarbon substituted with a Cto Calkoxy group.

Method of preparing sulfide-based solid electrolyte, sulfide-based solid electrolyte prepared therefrom, and solid secondary battery including the sulfide electrolyte

A lithium battery and a method of preparing the lithium battery, wherein the lithium battery includes: a cathode layer including a cathode active material including a core, and an ion conductive phosphate coating layer on a surface of the core; an anode layer; and a solid electrolyte layer that is disposed between the cathode layer and the anode layer, wherein the solid electrolyte layer includes a sulfide solid electrolyte.

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Kobe, Japan

Nobuya Machida