| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lithium ion energy storage device not only excellent in energy storage performance including initial characteristics and cycle characteristics but also capable of performing pre-doping at low temperature and in a short time. <P>SOLUTION: A lithium ion energy storage device 10 comprises: an electrode unit 30 in which a plurality of negative electrodes 14 each including a film negative electrode collector 14b having a through hole 14a and negative electrode active materials 14c formed on the negative electrode collector 14b, and a plurality of positive electrodes 12 each including a film positive electrode collector 12b having a through hole 12a and positive electrode active materials 12c formed on the positive electrode collector 12b are alternately laminated one by one via a film separator 16; a lithium electrode 18 including a lithium electrode collector 18a and a lithium metal 18b and electrochemically connected to the negative electrode 14 or the positive electrode 12 or both the negative electrode 14 and the positive electrode 12; and an electrolyte having conductivity at 25°C within a range of 8 mS/cm-20 mS/cm. <P>COPYRIGHT: (C)2012,JPO&INPIT |
