PRODUCTION METHOD OF SOLID ELECTROLYTE MEMBER

• Main Authors: HAGA KENICHI, HISAYOSHI KANJI, SHIMIZU SHO
• Format: Patent
• Language: English; Japanese
• Published: 07.04.2023
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CHEMISTRY; COMPOUNDS THEREOF; CONDUCTORS; ELECTRICITY; INORGANIC CHEMISTRY; INSULATORS; METALLURGY; NON-METALLIC ELEMENTS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES

To produce a solid electrolyte member having sufficient ionic conductivity with ease.SOLUTION: A production method of a sulfide-based solid electrolyte member includes: a preparation step to prepare an assembly of starting materials which consist of a material for an electrolyte containing at least one element other than sulfur out of elements constituting the solid electrolyte member and elemental sulfur; and a generation step to generate the solid electrolyte member by heating the assembly of starting materials. In the preparation step, a volume ratio of the elemental sulfur to the total assembly when heated to 120°C in the assembly of the starting materials is 20% or more.SELECTED DRAWING: Figure 1 【課題】十分なイオン導電率を有する固体電解質部材を、容易に製造する。【解決手段】固体電解質部材の製造方法は、硫化物系の固体電解質部材の製造方法であって、固体電解質部材を構成する元素のうちの、少なくとも硫黄以外の元素を含む電解質用原料と、単体硫黄と、を出発原料とし、出発原料の集合物を準備する準備ステップと、出発原料の集合物を加熱して固体電解質部材を生成する生成ステップと、を含む。準備ステップにおいて、出発原料の集合物は、１２０℃に加熱した際の、集合物全体に対する単体硫黄の体積比率が、２０％以上である。【選択図】図１