METHOD OF PRODUCING SOLID ELECTROLYTE-CONTAINING SHEET, METHOD OF PRODUCING ELECTRODE SHEET FOR ALL-SOLID SECONDARY BATTERY, AND METHOD OF MANUFACTURING ALL-SOLID SECONDARY BATTERY

• Main Author: MEGURO KATSUHIKO
• Format: Patent
• Language: English; Japanese
• Published: 02.08.2018
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PROBLEM TO BE SOLVED: To provide a method of producing a solid electrolyte-containing sheet for use in an all-solid secondary battery, in which a decrease in ion conductivity of an all-solid secondary battery can be effectively suppressed and also a short circuit during battery operation can be suppressed, a method of producing an electrode sheet for an all-solid secondary battery, and a method of manufacturing an all-solid secondary battery.SOLUTION: A method of producing a solid electrolyte-containing sheet, a method of producing an electrode sheet for an all-solid secondary battery, and a method of manufacturing an all-solid secondary battery include the steps of dry-mixing a sulfide-based inorganic solid electrolyte and hydrophobic fumed silica, and performing dry deposition of a mixture obtained through the previous step, the ratio of the hydrophobic fumed silica in the mixture being 0.2-2.0 mass%.SELECTED DRAWING: Figure 1 【課題】全固体二次電池に用いる固体電解質含有シートの製造方法であって、全固体二次電池のイオン伝導度の低下を効果的に抑制することができ、また電池作動時の短絡も抑制することができる固体電解質含有シートの製造方法、全固体二次電池用電極シートの製造方法及び全固体二次電池の製造方法を提供する。【解決手段】硫化物系無機固体電解質と疎水性ヒュームドシリカとを乾式混合する工程と、この工程で得た混合物を乾式成膜する工程とを含み、混合物中の疎水性ヒュームドシリカの割合を０．２〜２．０質量％とする固体電解質含有シートの製造方法、全固体二次電池用電極シートの製造方法及び全固体二次電池の製造方法。【選択図】図１