| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a superior lithium secondary battery which has various battery characteristics in good balance such as that immersion of electrolytic solution into an electrode is excellent and manufacturing can be made in a short time with little initial irreversible capacity, that is, that has a high capacity density as the battery capacity lost in an initial charge and discharge is reduced and has an excellent low-temperature discharge efficiency, that is, high current density discharge at a low temperature environment is possible with a high cycle maintenance rate or the like. <P>SOLUTION: A conglobated material in which a polymer material is added to graphite particles as a negative electrode active material applied with conglobation is used as a negative electrode material and an electrolytic solution containing carbonate and propylene carbonate having an unsaturated bonding is combined with this. <P>COPYRIGHT: (C)2007,JPO&INPIT |
