| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide: a positive electrode active material for a lithium ion secondary battery with excellent cycle characteristics; a lithium ion secondary battery including the positive electrode active material, and a method for producing a lithium manganese silver complex oxide. <P>SOLUTION: The positive electrode active material for a lithium ion secondary battery includes a lithium manganese silver complex oxide comprising a lithium manganese complex oxide represented by compositional formula: xLi<SB POS="POST">2</SB>MnO<SB POS="POST">3</SB>(1-x)LiMeO<SB POS="POST">2</SB>(in the formula, 0<x≤1 is satisfied, and Me represents one metal selected from among Nb, Al, Fe, F, Mg, Co, Ti, Ni and trivalent Mn), a part of at least one metal among Li, tetravalent Mn and Me of the lithium manganese complex oxide being substituted with Ag. An average particle size of primary particles of the lithium manganese silver complex oxide is 10 nm or more and 200 nm or less. <P>COPYRIGHT: (C)2013,JPO&INPIT |
