利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

33 条记录 (耗时 0.026 秒)

    Lithium cell with heat formed separator
    1.
    发明授权
    Lithium cell with heat formed separator 有权
    锂电池与热成型分离器

    公开(公告)号：US06443999B1

    公开(公告)日：2002-09-03

    申请号：US09527508

    申请日：2000-03-16

    申请人： Reynald A. Cantave ,  Fred J. Berkowitz ,  William T. McHugh ,  Jane A. Blasi ,  Ernesto Figueira

    发明人： Reynald A. Cantave ,  Fred J. Berkowitz ,  William T. McHugh ,  Jane A. Blasi ,  Ernesto Figueira

    IPC分类号： H01M218

    CPC分类号： H01M6/10 ,  H01M2/168 ,  H01M2/18 ,  H01M6/16 ,  Y10T29/49108

    摘要： A primary lithium cell having a wound electrode assembly. The electrode assembly comprises an anode comprising lithium, a cathode comprising a manganese dioxide and an electrolyte permeable separator therebetween. The electrode assembly comprises a cathode sheet, an anode sheet and electrolyte permeable separator sheet therebetween. The sheets are wound into a spiral roll. An exposed edge of each revolution of the separator sheet is then heat treated, for example, by applying a heated platen thereto to mold said exposed edge into a continuous separator membrane. The continuous separator membrane, so formed, covers and seals off said edge of adjacent revolutions of the cathode sheet and thus provides electrical insulation therefor. The electrode assembly can then be inserted into the cell casing so that the continuous separator membrane abuts a surface of the casing and provides electrical insulation between the casing and the wound cathode sheet. This reduces the total amount of electrical insulation needed between the cell casing and wound electrodes and thereby frees up void volume which can be used for additional active material, for example, by making the anode and cathode sheets wider.

    摘要翻译： 具有卷绕电极组件的一次锂电池。 电极组件包括包含锂的阳极，包含二氧化锰的阴极和其间的电解质可渗透隔离物。 电极组件包括阴极片，阳极片和它们之间的电解质可渗透隔离片。 将片材缠绕成螺旋卷。 然后例如通过将加热的压板加到其上以将所述暴露的边缘模制成连续的隔膜，然后对隔板的每一转的暴露边缘进行热处理。 如此形成的连续分隔膜覆盖并密封阴极片的相邻转圈的边缘，从而为其提供电绝缘。 然后可以将电极组件插入电池壳体中，使得连续的分隔膜抵靠壳体的表面并且在壳体和卷绕的阴极片之间提供电绝缘。 这减少了电池壳体和卷绕电极之间所需的电绝缘的总量，从而释放可用于附加活性材料的空隙体积，例如通过使阳极和阴极片更宽。

    Method of preparing cathode containing Iron disulfide for a lithium cell
    8.
    发明申请
    Method of preparing cathode containing Iron disulfide for a lithium cell 有权
    制备锂电池用二硫化铁的阴极的方法

    公开(公告)号：US20090291366A1

    公开(公告)日：2009-11-26

    申请号：US12154572

    申请日：2008-05-23

    申请人： Maya Stevanovic ,  Michael Pozin ,  Yelena Kouznetsova ,  Steven J. Specht ,  Fred J. Berkowitz

    发明人： Maya Stevanovic ,  Michael Pozin ,  Yelena Kouznetsova ,  Steven J. Specht ,  Fred J. Berkowitz

    IPC分类号： H01M4/40 ,  H01M4/08

    CPC分类号： H01M4/1397 ,  H01M4/136 ,  H01M4/248 ,  H01M4/5815 ,  H01M4/622 ,  H01M6/16 ,  Y02E60/122 ,  Y02P70/54

    摘要： A primary cell having an anode comprising lithium or lithium alloy and a cathode comprising iron disulfide (FeS2) or a mixture of iron disulfide (FeS2) and iron sulfide (FeS) and conductive carbon particles. A cathode slurry is prepared comprising the FeS2 or FeS2 plus FeS powder, conductive carbon, binder, and a solvent. The binder is preferably a styrene-ethylene/butylene-styrene (SEBS) block copolymer. There is an advantage discovered in utilizing a hydronaphthalene solvent to form the cathode slurry. The preferred solvent is 1,2,3,4-tetrahydronaphthalene or decahydronaphthalene and mixtures thereof. The slurry mixture is coated onto a conductive substrate and the solvent evaporated leaving a dry cathode coating on the substrate. Higher drying temperature may be used resulting in a dry cathode coating which resists cracking. The anode and cathode can be spirally wound with separator therebetween and inserted into the cell casing with electrolyte then added.

    摘要翻译： 具有包含锂或锂合金的阳极和包含二硫化铁（FeS 2）或二硫化铁（FeS 2）和硫化铁（FeS）和导电碳颗粒的混合物的阴极的初级电池。 制备包含FeS 2或FeS 2加FeS粉末，导电碳，粘合剂和溶剂的阴极浆料。 粘合剂优选为苯乙烯 - 乙烯/丁烯 - 苯乙烯（SEBS）嵌段共聚物。 在利用氢化萘溶剂形成阴极浆料时发现了一个优点。 优选的溶剂是1,2,3,4-四氢化萘或十氢萘及其混合物。 将浆料混合物涂覆到导电基材上，蒸发溶剂，在基材上留下干燥的阴极涂层。 可以使用更高的干燥温度，导致干燥的阴极涂层，其耐龟裂。 阳极和阴极可以用分离器螺旋卷绕并插入电池壳体中，然后加入电解质。