| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a nonaqueous secondary battery that has improved impregnation properties in an nonaqueous electrolyte, has little variations in battery capacity, and shows improved lifetime characteristics, by forming a V groove on at least one of electrode surfaces compressed to a prescribed thickness. <P>SOLUTION: A positive electrode compound paint made of at least an active substance, a conductive agent, and a binder is applied to a core for drying. Then, a positive electrode plate 1, compressed to a prescribed thickness, is passed through a gap H between an upper roller 10 and a lower roller 11, having a protruding projection 12 of a tip angle α, thus forming a V-groove, while an active substance is pressed and separated to both the sides of the surface of the positive electrode plate 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
