| abstract |
(57) [Summary] [Purpose] To extend the charge / discharge cycle life and achieve high capacity and high energy density. A battery electrode having at least a metal element that forms an alloy with lithium and a metal element that does not form an alloy with lithium as constituent elements, and an output terminal 206 is drawn from a metal portion 200 that does not form an alloy with lithium, and the same. A lithium secondary battery in which the negative electrode 200 was used. |