ALL SOLID LITHIUM BATTERY

PROBLEM TO BE SOLVED: To provide a safe battery having high reliability and large charge-discharge current density, even in a battery using lithium as a negative electrode active material. SOLUTION: This battery is composed by using a sulfide-based lithium ion conducting solid electrolyte as a first solid electrolyte of the all solid lithium battery, and by interlaying a second lithium ion conducting solid electrolyte in contact with the electrolyte without including a transition metal between negative electrodes each containing lithium as an active material. Thereby, local deposition of lithium is generated in the negative electrodes; and when it pierces a second lithium ion conducting thin film, lithium deposited at that position comes into contact with the sulfide-based lithium ion conducting solid electrolyte, so that a layer lacking lithium ion conductivity is chemically formed. Thereby, a flow of a current is blocked at that position, and as a result, a smoothing phenomenon occurs in the lithium deposition as the whole negative electrode surface, so that lithium can be used as a stable negative electrode active material. COPYRIGHT: (C)2004,JPO&NCIPI