| 摘要 |
An active material 5 comprises a core particle 1 containing LiCo (1-x) M x O 2 and/or Li(Mn (1-y) My) 2 O 4 , and a coating part 2 covering at least part of a surface of the core particle 1, while the coating part 2 contains LiVOPO 4 . 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 4 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. |
