| abstract |
The present invention relates to a lithium secondary battery and, more particularly, to a lithium secondary battery having excellent life characteristics and penetration safety. The lithium secondary battery of the present invention can have the effects of remarkably improving both lifetime characteristics and penetration safety, by combining a cathode active material comprising a metal having a concentration gradient section, with an anode and a separation film, the anode and the separation film each comprising a ceramic coating layer. |