| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for recovering a material for a sulfide solid battery, by which a positive electrode active material and a sulfide solid electrolyte can be recovered without producing hydrogen sulfide.SOLUTION: A method for recovering a material for a sulfide solid battery by separating, from a positive electrode for a sulfide solid battery, the material, which is included in the positive electrode, provided that the material for a sulfide solid battery includes at least a positive electrode active material and a sulfide solid electrolyte comprises: an active material electrolyte separation step where the positive electrode is put in a dispersant A and then, the positive electrode active material and the sulfide solid electrolyte are separated from each other by utilizing a difference in specific weight. The dispersant A is an organic solvent in which the positive electrode active material and the sulfide solid electrolyte are not dissolved. In the recovery method, the following relation holds: dSE<"d dispersant A"<"d active material", where "d active material" represents a specific weight of the positive electrode active material, dSE represents a specific weight of the sulfide solid electrolyte, and "d dispersant A" represents a specific weight of the dispersant A.SELECTED DRAWING: Figure 1 |
