Rechargeable alkaline manganese cell having improved capacity and
improved energy density
    1.
    发明授权
    Rechargeable alkaline manganese cell having improved capacity and improved energy density 失效
    可充电碱锰电池具有改进的容量和改善的能量密度

    公开(公告)号:US5340666A

    公开(公告)日:1994-08-23

    申请号:US110203

    申请日:1993-08-23

    摘要: A rechargeable alkaline manganese cell provided, having improved capacity and improved energy density. The cell is anode limited, and each of the anode and cathode is physically dimensioned so that the anode has a capacity in the range of from about 55% to 100% of the theoretical one electron capacity of the cathode. The gravimetric energy density of the cell exceeds 70 Wh/kg, and the volumetric energy density of the cell exceeds 200 Wh/liter. Each of the anode and cathode may comprise additional additives. For example, the cathode may include additional hydrophobic materials and a porous additive such as carbon black so as to improve gas transport of hydrogen gas into the cathode where it is oxidized; and the anode may comprise hydrogen gassing inhibitors as well as hydrogen gas recombing agents.

    摘要翻译: 提供可充电碱性锰电池,具有改进的容量和改善的能量密度。 电池是阳极限制的,并且阳极和阴极的每个物理尺寸使得阳极的电容在阴极的理论电子能力的约55%至100%的范围内。 电池的重量能量密度超过70 Wh / kg,电池的体积能量密度超过200 Wh / l。 阳极和阴极中的每一个可以包含另外的添加剂。 例如,阴极可以包括另外的疏水材料和诸如炭黑的多孔添加剂,以便改善氢气进入阴极的气体输送,在那里被氧化; 并且阳极可以包括氢气放气抑制剂以及氢气推聚剂。

    Metal and metal oxide catalyzed electrodes for electrochemical cells,
and methods of making same
    2.
    发明授权
    Metal and metal oxide catalyzed electrodes for electrochemical cells, and methods of making same 失效
    用于电化学电池的金属和金属氧化物催化电极及其制备方法

    公开(公告)号:US5069988A

    公开(公告)日:1991-12-03

    申请号:US540932

    申请日:1990-06-15

    CPC分类号: H01M4/90 H01M4/86 H01M4/96

    摘要: Porous electrodes for use in fuel cells and other electrochemical cells are disclosed. Principally, the electrodes a catalytically active layer on a porous conductive substrate, which catalytically active layer is derived from non-noble metals. The loading of the catalytically active layer is lower in terms of weight of catalyst per unit area of geometrical electrode surface than heretofore. Several alternative methods of forming the electrode are taught, including impregnating a porous conductive substrate with a metal salt solution, followed by chemical or thermal formation of the porous catalytically active layer; or mixing the catalytically active material with the material of the porous conductive substrate, followed by fabrication of the electrode; or depositing pyrolitic carbon from the gas phase onto a porous conductive substrate, at elevated temperatures in a gas atmosphere. The electrode may also have a porous metallic current collector, and also a further gas diffusion layer. If used as a fuel cell anode, a further small amount of noble metal is included in the porous catalytically active layer. Porous electrodes of this invention have particular utility in alkaline primary or secondary cells as auxiliary gas recombining electrodes, especially as oxygen consuming auxiliary transfer electrodes.

    摘要翻译: 公开了用于燃料电池和其它电化学电池的多孔电极。 主要地,电极是多孔导电基底上的催化活性层,催化活性层衍生自非贵金属。 催化活性层的负载量相对于几何电极表面的每单位面积的催化剂的重量来说比以前更低。 教导了形成电极的几种替代方法,包括用金属盐溶液浸渍多孔导电衬底,然后化学或热形成多孔催化活性层; 或将催化活性材料与多孔导电衬底的材料混合,随后制造电极; 或在气体气氛中升高的温度下将来自气相的热解碳沉积到多孔导电基底上。 电极也可以具有多孔金属集流体,还可以具有另外的气体扩散层。 如果用作燃料电池阳极,则在多孔催化活性层中还包含另外少量的贵金属。 本发明的多孔电极在碱性一次电池或二次电池中具有特别的用途,作为辅助气体复合电极,特别是作为耗氧辅助转移电极。

    FLOW-THROUGH CONSUMABLE ANODES
    4.
    发明申请
    FLOW-THROUGH CONSUMABLE ANODES 有权
    流通消耗阳极

    公开(公告)号:US20130112563A1

    公开(公告)日:2013-05-09

    申请号:US13289470

    申请日:2011-11-04

    IPC分类号: C25D17/10 C25D21/18

    摘要: Anode applicators include consumable anodes, that can be operated in a non-stationary mode and are insensitive to orientation, are used in selective plating/brush electrodeposition of coatings or free-standing components. The flow-through dimensionally-stable, consumable anodes employed are perforated/porous to provide relatively unimpeded electrolyte flow and operate at low enough electrochemical potentials to provide for anodic metal/alloy dissolution avoiding undesired anodic reactions. The consumable anodes include consumable anode material(s) in high surface area to reduce the local anodic current density. During electroplating, sufficient electrolyte is pumped through the consumable anodes at sufficient flow rates to minimize concentration gradient and/or avoid the generation of chlorine and/or oxygen gas and/or undesired reaction such as the anodic oxidation of P-bearing ions in the electrolyte. The active consumable anode material(s) can have a microstructure which is fine-grained and/or amorphous to ensure a uniform anodic dissolution.

    摘要翻译: 阳极施加器包括可以以非固定模式操作且对取向不敏感的消耗性阳极用于涂层或独立部件的选择性电镀/刷电沉积。 使用的流通尺寸稳定的消耗性阳极是穿孔/多孔的,以提供相对无阻碍的电解质流动并且在足够低的电化学电势下操作以提供阳极金属/合金溶解以避免不期望的阳极反应。 消耗性阳极包括高表面积的消耗性阳极材料,以减少局部阳极电流密度。 在电镀过程中,足够的电解液以足够的流速被泵入消耗性阳极以最小化浓度梯度和/或避免产生氯和/或氧气和/或不期望的反应,例如电解质中含P离子的阳极氧化 。 活性消耗性阳极材料可以具有细晶粒和/或无定形的微结构,以确保均匀的阳极溶解。

    Composite Current Collector for Aqueous Electrochemical Cell for aqueous electrochemical cell
    5.
    发明申请
    Composite Current Collector for Aqueous Electrochemical Cell for aqueous electrochemical cell 有权
    用于水电化学电池的水电化学电池的复合集电极

    公开(公告)号:US20120202116A1

    公开(公告)日:2012-08-09

    申请号:US13451586

    申请日:2012-04-20

    IPC分类号: H01M4/64 H01M4/66 H01M4/70

    摘要: Composite current collectors containing coatings of metals, alloys or compounds, selected from the group of Zn, Cd, Hg, Ga, In, Tl, Sn, Pb, As, Sb, Bi and Se on non-metallic, non-conductive or poorly-conductive substrates are disclosed. The composite current collectors can be used in electrochemical cells particularly sealed cells requiring a long storage life. Selected metals, metal alloys or metal compounds are applied to polymer or ceramic substrates by vacuum deposition techniques, extrusion, conductive paints (dispersed as particles in a suitable paint), electroless deposition, cementation; or after suitable metallization by galvanic means (electrodeposition or electrophoresis). Metal compound coatings are reduced to their respective metals by chemical or galvanic means. The current collectors described are particular suitable for use in sealed primary or rechargeable galvanic cells containing mercury-fee and lead-free alkaline zinc electrodes.

    摘要翻译: 包含金属,合金或化合物的复合集流体,其选自Zn,Cd,Hg,Ga,In,Tl,Sn,Pb,As,Sb,Bi和Se,非金属,不导电或不良 导电基底。 复合集电器可用于电化学电池,特别是需要长存储寿命的密封电池。 选择的金属,金属合金或金属化合物通过真空沉积技术,挤出,导电涂料(分散为合适涂料中的颗粒),无电沉积,胶结剂等应用于聚合物或陶瓷基材; 或通过电化学方法(电沉积或电泳)合适的金属化之后。 金属化合物涂层通过化学或电流方法还原成各自的金属。 所描述的集电器特别适用于含有汞和无铅碱性锌电极的密封初级或可充电电池。

    Composite Current Collector for Electrochemical Cell
    6.
    发明申请
    Composite Current Collector for Electrochemical Cell 有权
    电化学电池用复合集电极

    公开(公告)号:US20110223470A1

    公开(公告)日:2011-09-15

    申请号:US13099390

    申请日:2011-05-03

    摘要: Composite current collectors containing coatings of metals, alloys or compounds, selected from the group of Zn, Cd, Hg, Ga, In, Tl, Sn, Pb, As, Sb, Bi and Se on non-metallic, non-conductive or poorly-conductive substrates are disclosed. The composite current collectors can be used in electrochemical cells particularly sealed cells requiring a long storage life. Selected metals, metal alloys or metal compounds are applied to polymer or ceramic substrates by vacuum deposition techniques, extrusion, conductive paints (dispersed as particles in a suitable paint), electroless deposition, cementation; or after suitable metallization by galvanic means (electrodeposition or electrophoresis). Metal compound coatings are reduced to their respective metals by chemical or galvanic means. The current collectors described are particular suitable for use in sealed primary or rechargeable galvanic cells containing mercury-free and lead-free alkaline zinc electrodes.

    摘要翻译: 包含金属,合金或化合物的复合集流体,其选自Zn,Cd,Hg,Ga,In,Tl,Sn,Pb,As,Sb,Bi和Se,非金属,不导电或不良 导电基底。 复合集电器可用于电化学电池,特别是需要长存储寿命的密封电池。 选择的金属,金属合金或金属化合物通过真空沉积技术,挤出,导电涂料(分散为合适涂料中的颗粒),无电沉积,胶结剂等应用于聚合物或陶瓷基材; 或通过电化学方法(电沉积或电泳)合适的金属化之后。 金属化合物涂层通过化学或电流方法还原成各自的金属。 所描述的集电器特别适用于含有无汞和无铅碱性锌电极的密封初级或可充电电池。