摘要 |
An active material comprises a core particle containing LiCo<SUB>(1-x)</SUB>M<SUB>x</SUB>O<SUB>2 </SUB>and/or Li(Mn<SUB>(1-y)</SUB>M<SUB>y</SUB>)<SUB>2</SUB>O<SUB>4</SUB>, and a coating part covering at least part of a surface of the core particle, while the coating part contains LiVOPO<SUB>4</SUB>. Here, M is at least one element selected from the group consisting of Al, Mg, and transition elements, 0.95>=x>=0, 0.2>=y>=0, and V in LiVOPO<SUB>4 </SUB>may partly be substituted by at least one element selected from the group consisting of Ti, Ni, Co, Mn, Fe, Zr, Cu, Zn, and Yb.
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