| 摘要 |
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: <?in-line-formulae description="In-line Formulae" end="lead"?>A<SUB>x</SUB>H<SUB>(3-x)</SUB>PO<SUB>4 </SUB> (I) <?in-line-formulae description="In-line Formulae" end="tail"?> wherein, A is Li, Na or NH<SUB>4</SUB>; and O<x<=3.
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