| 摘要 |
<P>PROBLEM TO BE SOLVED: To avoid use of rare elements, and to improve cycle characteristics and preservation properties under high temperature. <P>SOLUTION: A positive electrode for a battery contains as a positive electrode active material a transition metal composite oxide and satisfies, within a range of 50% to 90% of depth of discharge, a relation in which the minimum value I<SB>1</SB>of X-ray diffraction intensity with at least one or more X-ray diffraction peak to X-ray diffraction intensity I<SB>0</SB>at 100% of depth of discharge is to be I<SB>1</SB>/I<SB>0</SB>>0.5. <P>COPYRIGHT: (C)2009,JPO&INPIT |
