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1.发明授权公开(公告)号：US10910640B2
公开(公告)日：2021-02-02
申请号：US16386852
申请日：2019-04-17
发明人： Takeshi Kawasato , Kentaro Tsunozaki , Haisheng Zeng , Yasuyuki Takimoto , Toshio Suzuki , Tegi Ri
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.
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2.发明申请公开(公告)号：US20190245202A1
公开(公告)日：2019-08-08
申请号：US16386852
申请日：2019-04-17
发明人： Takeshi KAWASATO , Kentaro Tsunozaki , Haisheng Zeng , Yasuyuki Takimoto , Toshio Suzuki , Tegi Ri
CPC分类号： H01M4/366 , C01D15/02 , C01P2002/72 , C01P2004/80 , C01P2006/12 , C01P2006/40 , H01M4/483 , H01M4/505 , H01M4/525 , H01M4/5825 , H01M10/052
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.
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3.发明授权公开(公告)号：US10326127B2
公开(公告)日：2019-06-18
申请号：US14230950
申请日：2014-03-31
发明人： Takeshi Kawasato , Kentaro Tsunozaki , Haisheng Zeng , Yasuyuki Takimoto , Toshio Suzuki , Tegi Ri
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.
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