Patent ID: 8197970
Filing Date: 2012-06-12
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
1. A lithium battery comprising: a substrate; a positive electrode layer; a negative electrode layer; and a sulfide solid electrolyte layer that mediates conduction of lithium ions between the positive electrode layer and the negative electrode layer, wherein the positive electrode layer, the negative electrode layer, and the sulfide solid electrolyte layer are provided on the substrate, wherein the positive electrode layer is formed by a vapor-phase deposition method, wherein a buffer layer that suppresses nonuniformity of distribution of lithium ions near the interface between the positive electrode layer and the solid electrolyte layer is provided between the positive electrode layer and the solid electrolyte layer, wherein the buffer layer is in an amorphous state, wherein an ab-axis orientation is higher than a c-axis orientation in the positive electrode layer, wherein an active material of the positive electrode layer is made of a compound having a layered rock-salt structure when crystallized, and wherein the ratio of plane indices of the positive electrode layer satisfies the relationship (003)/(101)<10.