| abstract |
An electrode laminate unit 12 of an electric storage device 10 is composed of positive electrodes 14 and negative electrodes 15 , which are alternately laminated, and a lithium electrode 16 is arranged at the outermost part of the electrode laminate unit 12 so as to oppose to the negative electrode 15 . A charging/discharging unit 21 having first and second energization control units 21 a and 21 b is connected to a positive-electrode terminal 18 , negative-electrode terminal 19 , and a lithium-electrode terminal 20 . Electrons are moved from the lithium electrode 16 to the positive electrode 14 through the first energization control unit 21 a , and lithium ions are doped into the positive electrode 14 from the lithium electrode 16 . Electrons are moved from the lithium electrode 16 to the negative electrode 15 through the second energization control unit 21 b , and lithium ions are doped into the negative electrode 15 from the lithium electrode 16 . The lithium ions are doped into both of the positive electrode 14 and the negative electrode 15 as described above, whereby the doping time can dramatically be shortened. |