| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a negative electrode material for a lithium ion secondary battery that achieves high capacity and good cycle characteristics. <P>SOLUTION: This nanoscale particle includes different kinds of element A and element D. The element A is at least one kind of element selected from a group consisting of Si, Sn, Al, Pb, Sb, Bi, Ge, In and Zn. The element D is at least one kind of element selected from a group consisting of Fe, Co, Ni, Ca, Sc, Ti, V, Cr, Mn, Sr, Y, Zr, Nb, Mo, Ru, Rh, Ba, lanthanoid elements (other than Ce and Pm), Hf, Ta, W and Ir. The nanoscale particle includes at least a first phase as a simple substance or solid solution of the element A and a second phase as a compound of the element A and element D. The negative electrode material for the lithium ion secondary battery includes the nanoscale particles as a negative electrode active material. <P>COPYRIGHT: (C)2012,JPO&INPIT |
