| 摘要 |
Positive active materials are provided with which a non-aqueous electrolyte secondary battery having a high energy density and excellent charge/discharge cycle performance can be produced. Also provided are a positive electrode for non-aqueous electrolyte secondary batteries which comprises the positive active materials and a non-aqueous electrolyte secondary battery. <??>One of the positive active materials comprises a composite oxide represented by the composite formula LiaMn0.5-xNi0.5-yMx+yO2 (wherein 0.98</=a<1.1; -0.1</=x-y</=0.1; and M is at least one element other than Li, Mn, and Ni). The other positive active material comprises a composite oxide represented by the composite formula LiwMnx'Niy'Coz'O2 (wherein x', y', and z' are values within such a range that in a ternary phase diagram, (x', y', z') is present on the perimeter of or inside the quadrilateral ABCD defined by point A (0.51, 0.49, 0), point B (0.45, 0.55, 0), point C (0.25, 0.35, 0.4), and point D (0.31, 0.29, 0.4) as vertexes, and 0</=w/(x'+y'+z')</=1.30). |
| 申请人 |
GS YUASA CORPORATION |
发明人 |
SHIOZAKI, RYUJI;OKABE, KAZUYA;NUKUDA, TOSHIYUKI;FUJII, AKIHIRO;INAMASU, TOKUO;IGUCHI, TAKAAKI;KOJIMA, TOSHIAKI;WATARI, TAKASHI;YUFU, HIROSHI |
