POSITIVE ELECTRODE FOR ALL-SOLID-STATE SECONDARY BATTERY AND ALL-SOLID-STATE SECONDARY BATTERY

To provide an all-solid-state secondary battery that can suppress deterioration of battery performance due to charging and discharging even without application of external pressure or under low restraining pressure.SOLUTION: A positive electrode for an all-solid-state secondary battery includes a positive electrode current collector, and a positive electrode mixture layer laminated on the positive electrode current collector, and the positive electrode mixture layer includes a positive electrode active material capable of absorbing and releasing lithium ions, a sulfide solid electrolyte, and an ionic plastic crystal having a 1,1,2,2,3,3-hexafluoropropane-1,3-disulfonimide anion as an anion.SELECTED DRAWING: Figure 2 【課題】外圧を印加しない又は低い拘束圧下においても充放電による電池性能の低下を抑制することができる全固体二次電池を提供する。【解決手段】正極集電体と、該正極集電体上に積層された正極合材層とを備え、前記正極合材層が、リチウムイオンを吸蔵放出可能な正極活物質と、硫化物固体電解質と、１，１，２，２，３，３－ヘキサフルオロプロパン－１，３－ジスルホンイミドアニオンをアニオンとするイオン性柔粘性結晶を含有するものであることを特徴とする全固体二次電池用正極。【選択図】図２