| 摘要 |
PROBLEM TO BE SOLVED: To provide an all solid battery having a solid electrolyte layer with low ionic-conduction resistance and a high packing fraction.SOLUTION: The all solid battery includes a positive electrode active material layer, a negative electrode active material layer, and a solid electrolyte layer formed between the positive electrode active material layer and the negative electrode active material layer. The solid electrolyte layer contains at least two kinds of solid electrolyte particles: first solid electrolyte particles and second solid electrolyte particles. The thickness A [μm] of the solid electrolyte layer and the average particle size B [μm] of the first solid electrolyte particles satisfy A>B≥(1/100)A, and the average particle size B [μm] of the first solid electrolyte particles and the average particle size C [μm] of the second solid electrolyte particles satisfy (1/2)B≥C≥(1/40)B. The content of the first solid electrolyte particles is in the range of 50 to 90 mass% with respect to the total content of the two kinds of solid electrolyte particles. |
