| abstract |
An all-solid secondary battery having a high energy density and output density per battery weight, an electrode active material layer composition, an electrode sheet for a solid secondary battery, and a method for producing the same. An all-solid secondary battery 10 having a positive electrode active material layer 4, a solid electrolyte layer 3, and a negative electrode active material layer 2 in this order, in at least one of the positive electrode active material layer 4 and the negative electrode active material layer 2 The content of the inorganic solid electrolyte is 0 to 10% by mass with respect to the total solid content, the solid electrolyte layer 3 contains a sulfide-based solid electrolyte, and at least one of the positive electrode active material layer 4 and the negative electrode active material layer 2 Contains a binder and the negative electrode active material layer 2 contains a negative electrode active material represented by the formula (α), an all-solid secondary battery, a composition for an electrode active material layer, an electrode sheet for an all-solid secondary battery, and its Production method. Li xα M α yα O zα ... Formula (α) (M α is an element selected from Al, Ga, Ti, Si, Fe, etc .; xα to zα is a composition ratio of each element; xα = 0 to 4, yα = 0.3-7, zα = 0.5-15) [Selection] Figure 1 |