SOLID ELECTROLYTE COMPOSITION, SOLID ELECTROLYTE CONTAINING SHEET, ALL-SOLID TYPE SECONDARY BATTERY, AND MANUFACTURING METHOD OF SOLID ELECTROLYTE CONTAINING SHEET AND ALL-SOLID TYPE SECONDARY BATTERY

PROBLEM TO BE SOLVED: To provide a solid electrolyte composition capable of effectively suppressing reduction of a battery voltage of an all-solid type secondary battery with the passage of time, the solid electrolyte composition being used for the all-solid type secondary battery, a solid electrolyte containing sheet, the all-solid type secondary electrode and a manufacturing method of the solid electrolyte containing sheet and the all-solid type secondary battery.SOLUTION: The present invention relates to a solid electrolyte composition, a solid electrolyte containing sheet, an all-solid type secondary battery and a manufacturing method of the solid electrolyte containing sheet and the all-solid type secondary battery. The solid electrolyte composition contains a sulfide-based inorganic solid electrolyte (A) having conductivity of ions of a metal belonging to a first group or a second group of a periodic table; an antioxidant (B); a dispersant (C); and a binder (D). The binder (D) contains polyurethane, polyurea, polyamide, polyimide and/or polyester.SELECTED DRAWING: Figure 1 【課題】全固体二次電池に用いる固体電解質組成物であって、全固体二次電池の経時的な電池電圧の低下を効果的に抑制することができる固体電解質組成物及び固体電解質含有シート、全固体二次電池、並びに、固体電解質含有シート及び全固体二次電池の製造方法を提供する。【解決手段】周期律表第１族又は第２族に属する金属のイオンの伝導性を有する硫化物系無機固体電解質（Ａ）と、酸化防止剤（Ｂ）と、分散媒（Ｃ）と、バインダー（Ｄ）とを含有する固体電解質組成物であって、バインダー（Ｄ）がポリウレタン、ポリウレア、ポリアミド、ポリイミドおよび／またはポリエステルを含む、固体電解質組成物、固体電解質含有シート及び全固体二次電池、並びに固体電解質含有シート及び全固体二次電池の製造方法。【選択図】図１