| 发明名称 | Cathode active material, cathode and nonaqueous secondary battery | ||
| 摘要 | A cathode active material of the present invention is a cathode active material having a composition represented by General Formula (1) below, LiFe1−xMxP1−ySiyO4 (1),where: an average valence of Fe is +2 or more; M is an element having a valence of +2 or more and is at least one type of element selected from the group consisting of Zr, Sn, Y, and Al; the valence of M is different from the average valence of Fe; 0<x≦0.5; and y=x×({valence of M}−2)+(1−x)×({average valence of Fe}−2). This provides a cathode active material that not only excels in terms of safety and cost but also can provide a long-life battery. | ||
| 申请公布号 | US9337489(B2) | 申请公布日期 | 2016.05.10 |
| 申请号 | US201514628715 | 申请日期 | 2015.02.23 |
| 申请人 | SHARP KABUSHIKI KAISHA | 发明人 | Ohira Koji;Nishijima Motoaki;Sueki Toshitsugu;Esaki Shogo;Tanaka Isao;Koyama Yukinori;Tanaka Katsuhisa;Fujita Koji;Murai Shunsuke |
| 分类号 | H01M4/134;H01M4/58;H01M4/136;H01M10/052;H01M4/131;H01M4/525;H01M4/62;H01M10/04;H01M10/0585;H01M10/0587;C01B33/20;H01M4/02 | 主分类号 | H01M4/134 |
| 代理机构 | Nixon & Vanderhye P.C. | 代理人 | Nixon & Vanderhye P.C. |
| 主权项 | 1. A cathode active material consisting of a composition represented by General Formula (1) below, LiFe1−xMxP1−ySiyO4 (1), where: an average valence of Fe is +2 or more, the average valence of Fe being an average of valences of all Fe atoms constituting the cathode active material; Fe takes on a valence of +2 or +3; M has a valence of +2 or more, and M is at least one type of element selected from the group consisting of Zr, Sn, Y, and Al; the valence of M is different from the average valence of Fe; 0 <x≦0.5; and y =x×({valence of M}−2)+(1−x)×({average valence of Fe}−2). | ||
| 地址 | Osaka JP | ||