| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lithium-ion secondary battery excellent in cycle life. <P>SOLUTION: The lithium-ion secondary battery comprises: a cathode in which a cathode collector is provided with a cathode mixture containing a cathode active material stably exhibiting a potential of 4.5 V or higher based on metal lithium, a conductive agent, and a binder; an anode; a nonaqueous electrolyte having a lithium salt dissolved in a nonaqueous solvent; and a lithium fluoride in at least a surface layer of the cathode collector. <P>COPYRIGHT: (C)2013,JPO&INPIT |
