| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve problems that for suppressing deterioration in a lithium metal battery, technology forming a pretreatment layer and a protection layer such as lithium phosphate or LIPON (lithium phosphorus oxynitride) on the surface of a lithium negative electrode is well known, but the protection layer is deteriorated when exposed to wet environment such as an electrolyte solution containing trace moisture, and characteristics are decreased during use. <P>SOLUTION: The protection layer comprising Li<SB>x</SB>PT<SB>y</SB>O<SB>z</SB>(T is at least one element selected from the element group comprising Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zr, Nb, Mo, Ru, Ag, Ta, W, Pt, and Au) or Li<SB>x</SB>MO<SB>y</SB>N<SB>z</SB>(M is at least one element selected from the element group comprising Si, B, Ge, Al, C, Ga, and S) is formed on the pretreatment layer 2 formed on lithium metal 1, to improve cycle characteristics and increase energy density. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
