| abstract |
Disclosed herein is a lithium secondary battery including a phosphate compound, wherein metal ion impurities incorporated during a fabrication process of the battery are precipitated to thereby prevent electrodeposition of the metal ions on an anode, through the addition of one or more phosphates of Formula I to an electrode, an electrolyte or the surface of a separator: (I) wherein, A is Li, Na or NH4; and 0<x≤3. |