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    Electrochemical Cell Activated With A Liquid Electrolyte Wetting The Electrode Assembly Through An Opening In One Of The Electrodes
    12.
    发明申请
    Electrochemical Cell Activated With A Liquid Electrolyte Wetting The Electrode Assembly Through An Opening In One Of The Electrodes 有权

    公开(公告)号：US20210399367A1

    公开(公告)日：2021-12-23

    申请号：US17346328

    申请日：2021-06-14

    Applicant: Greatbatch Ltd.

    Inventor： Marcus J. Palazzo ,  Daniel M. Baumer

    IPC: H01M50/107 ,  H01M50/289 ,  H01M6/04

    Abstract: A miniature electrochemical cell of a primary or a secondary chemistry with a total volume that is less than 0.5 cc is described. The cell has a casing comprising an annular sidewall supported on a lower plate opposite an upper closure plate. The upper plate has a sealed electrolyte fill port. A current collector having an opening aligned with the fill port contacts an inner surface of the upper plate. An anode active material contacts the lower plate and a cathode active material contacts the upper closure plate. A dielectric material coats the lower open end of the annular sidewall and a portion of the inner surface of the sidewall. A glass seals the dielectric material to the lower plate. An electrolyte contacts the electrode assembly. The cathode active material contacting the current collector has an opening aligned with the current collector opening and the electrolyte fill port.

    LITHIUM ELECTROCHEMICAL CELL ACTIVATED WITH AN ELECTROLYTE CONTAINING DBC, LiBOB AND FEC ADDITIVES
    15.
    发明申请
    LITHIUM ELECTROCHEMICAL CELL ACTIVATED WITH AN ELECTROLYTE CONTAINING DBC, LiBOB AND FEC ADDITIVES 有权

    公开(公告)号：US20210359343A1

    公开(公告)日：2021-11-18

    申请号：US17246861

    申请日：2021-05-03

    Applicant: Greatbatch Ltd.

    Inventor： Robert S. Rubino ,  Joseph M. Lehnes ,  Marcus J. Palazzo ,  David M. Spillman ,  Ho-Chul Yun

    IPC: H01M10/0567 ,  H01M10/0569 ,  H01M10/0568 ,  H01M4/134 ,  H01M4/54 ,  H01M4/62 ,  H01M10/0525

    Abstract: An electrochemical cell having a casing housing an electrode assembly of a separator residing between a lithium anode and a cathode comprising silver vanadium oxide and fluorinated carbon is described. The electrode assembly is activated with a nonaqueous electrolyte comprising a lithium salt dissolved in a solvent system of propylene carbonate mixed with 1,2-dimethoxyethane, dibenzyl carbonate (DBC), lithium bis(oxalato)borate (LiBOB), and fluoroethylene carbonate (FEC). Preferably DBC is present in an amount ranging from about 0.005 moles (M) to about 0.25M, LiBOB is present in an amount ranging from about 0.005 wt. 5 to about 5 wt. %, and FEC is present in an amount ranging from about 0.01 wt. % to about 10 wt. %. This electrolyte formulation is more conductive than the conventional or prior art binary and ternary solvent system electrolytes while being chemically and electrochemically stable toward Li/SVO cells, Li-SVO/CFx mixture cells, and Li-SVO/CFx sandwich cathode primary electrochemical cells.

    Internal insulation design using porous material for an electrochemical cell
    19.
    发明授权
    Internal insulation design using porous material for an electrochemical cell 有权
    使用多孔材料进行电化学电池的内部绝缘设计

    公开(公告)号：US09355789B2

    公开(公告)日：2016-05-31

    申请号：US14271901

    申请日：2014-05-07

    Applicant: Greatbatch Ltd.

    Inventor： Paul W. Krehl ,  Marcus J. Palazzo

    IPC: H01G11/06 ,  H01M2/14 ,  H01M2/16 ,  H01G11/84 ,  H01G11/46 ,  H01M2/34 ,  H01M6/16 ,  H01M2/22 ,  H01M4/485 ,  H01M4/54 ,  H01M4/58 ,  H01M10/058

    CPC classification number: H01G11/06 ,  H01G11/46 ,  H01G11/84 ,  H01M2/1613 ,  H01M2/22 ,  H01M2/34 ,  H01M4/485 ,  H01M4/54 ,  H01M4/5815 ,  H01M4/582 ,  H01M6/16 ,  H01M10/058 ,  Y10T29/417 ,  Y10T29/49108

    Abstract: The prevention of lithium clusters from bridging between the negative and positive portions of a cell during discharge is described. This is done by providing a glass wool material at an intermediate location between the casing and anode current collector of a negative polarity and the cathode current collector and the terminal pin being of a positive polarity. Typically, a lithium ion concentration gradient sufficient to cause lithium cluster formation is induced by the high rate, intermittent discharge of a lithium/silver vanadium oxide (Li/SVO) cell. However, sufficient free electrolyte necessary for normal cell function is held in the relatively large pore volume throughout the extent of the glass wool material. Moreover, permeability within the glass wool material is tortuous, which effectively increases the distance between the negative and positive surfaces of the anode and cathode. This tortuosity effectively stops “straight line” dendrite growth of lithium clusters between opposite polarity structures inside the casing.

    Abstract translation: 描述了在放电期间防止锂簇在电池的负极部分和正极部分之间的桥接。 这通过在负极性的壳体和阳极集电体之间的中间位置提供玻璃棉材料，并且阴极集电器和端子销具有正极性来实现。 通常，通过锂/银钒氧化物（Li / SVO）电池的高速率间歇放电，引起足以引起锂簇形成的锂离子浓度梯度。 然而，正常的细胞功能所需的足够的游离电解质在玻璃棉材料的整个范围内被保持在相对大的孔体积中。 此外，玻璃棉材料内的渗透性是曲折的，这有效地增加了阳极和阴极的负面和正面之间的距离。 这种曲折有效地阻止了壳体内相对极性结构之间锂簇的“直线”枝晶生长。

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