| 摘要 |
PROBLEM TO BE SOLVED: To suppress the worsening of charge and discharge characteristics after heat shock.SOLUTION: An all-solid lithium ion battery 1 comprises: a positive electrode 10; an electrolyte layer 20; and a negative electrode 30. The positive electrode 10 is composed of a positive electrode composite material. The positive electrode composite material has: a positive electrode active material including sulfur atoms within a range of 30-90% of the positive electrode composite material in terms of mass; and a sulfide solid electrolyte having a LiS-MS(where M is selected from P, Si, Ge, B and Al; x and y each an integer providing a stoichiometric ratio depending on the kind of M) structure. The positive electrode composite material further has a conductive polymer as a conductive auxiliary agent of the positive electrode active material.SELECTED DRAWING: Figure 1 |
