发明名称 |
CATHODE ACTIVE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, AND PROCESS FOR ITS PRODUCTION |
摘要 |
To provide a cathode active material for a lithium ion secondary battery excellent in the cycle characteristics and rate characteristics even when charging is conducted at a high voltage. A cathode active material for a lithium ion secondary battery, which comprises particles (III) having a covering layer comprising a metal oxide (I) containing at least one metal element selected from the group consisting of elements in Groups 3 and 13 of the periodic table and lanthanoid elements, and a compound (II) containing Li and P, on the surface of a lithium-containing composite oxide comprising lithium and a transition metal element, wherein the atomic ratio of said P to said metal element (P/metal element) contained within 5 nm of the surface layer of the particles (III) is from 0.03 to 0.45. |
申请公布号 |
US2014212758(A1) |
申请公布日期 |
2014.07.31 |
申请号 |
US201414230950 |
申请日期 |
2014.03.31 |
申请人 |
ASAHI GLASS COMPANY, LIMITED |
发明人 |
KAWASATO Takeshi;TSUNOZAKI Kentaro;ZENG Haisheng;TAKIMOTO Yasuyuki;SUZUKI Toshio;RI Tegi |
分类号 |
H01M4/36;C01D15/02 |
主分类号 |
H01M4/36 |
代理机构 |
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代理人 |
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主权项 |
1. A cathode active material for a lithium ion secondary battery, which comprises particles (III) having a covering layer comprising a metal oxide (I) containing at least one metal element selected from the group consisting of elements in Groups 3 and 13 of the periodic table and lanthanoid elements, and a compound (II) containing Li and P, on the surface of a lithium-containing composite oxide comprising lithium and a transition metal element, wherein the atomic ratio of said P to said metal element (P/metal element) contained within 5 nm of the surface layer of the particles (III) is from 0.03 to 0.45. |
地址 |
Chiyoda-ku JP |