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    Hydrothermal Production of Lithium Iron Phosphate and Lithium Manganese Iron Phosphate in a Continuous Process
    12.
    发明公开
    Hydrothermal Production of Lithium Iron Phosphate and Lithium Manganese Iron Phosphate in a Continuous Process 审中-公开

    公开(公告)号：US20240217838A1

    公开(公告)日：2024-07-04

    申请号：US18424337

    申请日：2024-01-26

    Applicant: TDA Research, Inc

    Inventor： Girish Srinivas ,  Vinh T Nguyen ,  Steven Dietz

    IPC: C01G49/00

    CPC classification number: C01G49/009 ,  C01P2002/01 ,  C01P2002/72 ,  C01P2004/04 ,  C01P2004/51 ,  C01P2006/40

    Abstract: A continuous hydrothermal process for producing LFP/LMFP cathode materials for lithium-ion batteries. The reactant solutions include: (1) a lithium precursor (LiOH) and a carbon source (15 wt % sucrose); (2) an iron precursor (FeSO4) and a phosphorus precursor (H3PO4); and in the case of LMFP, a manganese precursor (MnSO4) and a surfactant in solution 2. Reactant solutions are fed into a series of one or more continuous stirred tank reactors (CSTRs) at a constant flowrate. Active LFP/LMFP flows out of the CSTRs and into a collection tank, where it is cooled and depressurized. The product flows into a slurry tank, then a centrifugal separator to remove aqueous waste. The LFP/LMFP is transferred to a continuous rotary kiln for drying and sintering, and the carbon coating forms. The disclosed processes produce LFP/LMFP with small average particle size, high purity, high capacity, and high yield without any ball-milling or sieving steps.

    GAS TEMPERATURE SENSOR WITH THERMALLY LUMINESCENT COMPOUNDS
    13.
    发明申请
    GAS TEMPERATURE SENSOR WITH THERMALLY LUMINESCENT COMPOUNDS 有权

    公开(公告)号：US20210318184A1

    公开(公告)日：2021-10-14

    申请号：US17267298

    申请日：2019-07-19

    Applicant: TDA Research, Inc.

    Inventor： John M Alford ,  David P Eisenberg ,  Girish Srinivas

    IPC: G01K11/3213 ,  C09K11/77

    Abstract: A thermally luminescent temperature sensor with a rare earth emitter having a first selective electromagnetic light energy emission band and a second selective electromagnetic light energy emission band in which the rare earth emitter converts thermal energy to electromagnetic light energy within the first and second selective energy emission bands. The sensor also has a selective optical detector in optical communication with the rare earth emitter, wherein the selective optical detector independently detects each the first and second selective electromagnetic light energy emission bands. Lastly, the thermally luminescent temperature sensor determines the temperature based on the electromagnetic light energy measured within the first and second selective energy emission bands relative to each other. Optionally additional emission bands may be used in the evaluation of the temperature.

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