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    Room temperature single phase Li insertion/extraction material for use in Li-based battery
    3.
    发明授权
    Room temperature single phase Li insertion/extraction material for use in Li-based battery 有权
    室温单相Li插入/提取材料用于锂基电池

    公开(公告)号：US08641921B2

    公开(公告)日：2014-02-04

    申请号：US12530846

    申请日：2008-03-19

    申请人： Pierre Gibot ,  Christian Masquelier ,  Jean-Marie Tarascon ,  Stephane Levasseur ,  Philippe Carlach

    发明人： Pierre Gibot ,  Christian Masquelier ,  Jean-Marie Tarascon ,  Stephane Levasseur ,  Philippe Carlach

    IPC分类号： H01M4/88 ,  H01M4/02 ,  H01M4/00 ,  B32B15/02

    CPC分类号： H01M4/136 ,  C01B25/45 ,  H01M4/5825 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028 ,  Y10T428/2982

    摘要： The invention relates to active materials for the manufacture of Li-based batteries. A crystalline nanometric powdered material with formula Lix(M, M′)PO4, in particular LixFePO4 (O≦x≦1), is disclosed, exhibiting single phase Li insertion/extraction mechanism at room temperature when used as positive electrode material in Li-based batteries. Compared to current LiFePO4, the novel material results in smooth, sloping charge/discharge voltage curve greatly simplifying the monitoring of the state of charge of the batteries. The coexistence of mixed valence states for Fe (i.e. FeIIIVFeII) is believed to increase the electronic conductivity in the room temperature single phase LixFePO4 material, compared to state of the art two-phase materials. This, together with the nanometric size of the particles and their sharp monomodal size distribution, contributes to the exceptional high-rate capability demonstrated in batteries.

    摘要翻译： 本发明涉及用于制造锂基电池的活性材料。 公开了具有式Lix（M，M'）PO 4，特别是LixFePO 4（O @ x @）的结晶纳米粉末材料，当用作锂 - 正电极材料中的正极材料时，在室温下呈现单相Li插入/萃取机理， 基于电池。 与目前的LiFePO4相比，新型材料产生平滑，倾斜的充放电电压曲线，大大简化了电池充电状态监测。 与现有技术的两相材料相比，Fe（即FeIIIVFeII）的混合价态的共存被认为增加室温单相LixFePO 4材料中的电子传导性。 这与颗粒的纳米尺寸及其尖峰单峰尺寸分布一起，有助于在电池中展现出卓越的高速率能力。

    Room Temperature Single Phase Li Insertion/Extraction Material for Use in Li-Based Battery
    4.
    发明申请
    Room Temperature Single Phase Li Insertion/Extraction Material for Use in Li-Based Battery 有权
    室温单相Li插入/提取材料用于锂电池

    公开(公告)号：US20100086852A1

    公开(公告)日：2010-04-08

    申请号：US12530846

    申请日：2008-03-19

    申请人： Pierre Gibot ,  Christian Masquelier ,  Jean-Marie Tarascon ,  Stephane Levasseur ,  Philippe Carlach

    发明人： Pierre Gibot ,  Christian Masquelier ,  Jean-Marie Tarascon ,  Stephane Levasseur ,  Philippe Carlach

    IPC分类号： H01M4/02

    CPC分类号： H01M4/136 ,  C01B25/45 ,  H01M4/5825 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028 ,  Y10T428/2982

    摘要： The invention relates to active materials for the manufacture of Li-based batteries. A crystalline nanometric powdered material with formula Lix(M, M′)PO4, in particular LixFePO4 (O≦x≦1), is disclosed, exhibiting single phase Li insertion/extraction mechanism at room temperature when used as positive electrode material in Li-based batteries. Compared to current LiFePO4, the novel material results in smooth, sloping charge/discharge voltage curve greatly simplifying the monitoring of the state of charge of the batteries. The coexistence of mixed valence states for Fe (i.e. FeIIIVFeII) is believed to increase the electronic conductivity in the room temperature single phase LixFePO4 material, compared to state of the art two-phase materials. This, together with the nanometric size of the particles and their sharp monomodal size distribution, contributes to the exceptional high-rate capability demonstrated in batteries.

    摘要翻译： 本发明涉及用于制造锂基电池的活性材料。 公开了具有式Lix（M，M'）PO 4，特别是LixFePO 4（O和N; E; x＆nlE; 1）的结晶纳米粉末材料，当用作锂 - 正电极材料中的正极材料时，在室温下显示单相Li插入/ 基于电池。 与目前的LiFePO4相比，新型材料产生平滑，倾斜的充放电电压曲线，大大简化了电池充电状态监测。 与现有技术的两相材料相比，Fe（即FeIIIVFeII）的混合价态的共存被认为增加室温单相LixFePO 4材料中的电子传导性。 这与颗粒的纳米尺寸及其尖峰单峰尺寸分布一起，有助于在电池中展现出卓越的高速率能力。