| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a positive electrode active material for a lithium ion battery, having favorable battery characteristics. <P>SOLUTION: The positive electrode active material for a lithium ion battery is represented by composition formula: Li<SB POS="POST">x</SB>Ni<SB POS="POST">1-y</SB>M<SB POS="POST">y</SB>O<SB POS="POST">2+α</SB>(in the formula, 0.9≤x≤1.2 and 0<y≤0.7 are satisfied, M represents metal, and α>0.05 is satisfied.), and has a half value width (2θ) of a diffraction peak derived from a (003) face of 0.14° or less, as measured by powdery X-ray diffraction (XRD). <P>COPYRIGHT: (C)2013,JPO&INPIT |
