| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a negative electrode active material which is effective in reduction of internal resistance and increase of battery capacity when used for a battery, in particular, an all solid polymer battery and in which superior cycle characteristics are obtained when used for a secondary battery, and the all solid polymer battery containing the negative electrode material. <P>SOLUTION: A lithium system active material 1 contains crystal grains 2 and crystal boundaries 3 and at least a part of the crystal boundaries 3 is exposed on the surface. The exposed area of the crystal boundaries 3 is made 0.02-0.5 cm<SP>2</SP>per the surface 1 cm<SP>2</SP>of the lithium system active material 1. A negative electrode, and as a result, a battery are manufactured using this lithium system active material 1. <P>COPYRIGHT: (C)2009,JPO&INPIT |
