| 摘要 |
PURPOSE:To obtain a solid electrolyte battery which has a large energy density and a high output density, and can produce a relatively large current by stacking together a solid positive active material, a solid electrolyte which conducts lithium ions, and a solid negative active material which is a lithium ion source. CONSTITUTION:A disk-like positive active material is prepared by pressure-molding mixture powder prepared by mixing PbI2 powder with a purity of 99.9% and a grain diameter of below 200mum, and Pb powder with a purity of 99.99% and a grain diameter of below 200mum in a voluminal ratio of 80 to 20. Next, a solid electrolyte thin film consisting of an LiI-MgI2 system solid solution, a negative active material thin film made of Li and a gold electrode thin film, in that order, are layered over the above positive active material so as to obtain a solid electrolyte battery. When the iodide of at least one element chosen from among magnesium and calcium is added to or solidified into the solid electrolyte made of lithium iodide as described above, the lithium-ion conducting property of the solid electrolyte is increased. As a result, even when the battery is small, a relatively large current can be released from the battery. |
