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    Air breathing fuel cell having bi-cell unit cells
    48.
    发明授权
    Air breathing fuel cell having bi-cell unit cells 失效
    空气呼吸燃料电池具有双电池单体电池

    公开(公告)号：US07309535B2

    公开(公告)日：2007-12-18

    申请号：US10650863

    申请日：2003-08-28

    申请人： Stanford R. Ovshinsky ,  Zdravjo Menjak ,  Srinivasan Venkatesan ,  Rajeev Puttaiah ,  Hong Wang

    发明人： Stanford R. Ovshinsky ,  Zdravjo Menjak ,  Srinivasan Venkatesan ,  Rajeev Puttaiah ,  Hong Wang

    IPC分类号： H01M8/00 ,  H01M12/00 ,  H01M2/02 ,  H01M2/14 ,  H01M8/04

    CPC分类号： H01M8/0271 ,  H01M8/0273 ,  H01M8/2445 ,  H01M8/2459 ,  H01M8/247 ,  H01M8/2483

    摘要： The present invention discloses a fuel cell having at least one bi-cell. The bi-cells may be stacked in series to achieve a desired power output. Each bi-cell is a unit cell comprising two hydrogen electrodes, two air/oxygen electrodes, two electrolyte distributors and a gas diffuser. The hydrogen electrodes are disposed adjacent to one another and the air/oxygen electrodes are disposed on the outside ends of the hydrogen electrodes. An electrolyte distributor is disposed between each adjacently set hydrogen electrode and air/oxygen electrode. A gas diffuser/distributor is disposed between the hydrogen electrodes. An elastomeric material is injected between the electrodes and distributors to provide mechanical stability. Further, the entire bi-cell is overmolded with an elastomeric material. Ribs are set in the distributors to prevent the elastomeric material from flowing into areas designed for electrolyte flow, hydrogen flow and mechanical restraints and to promote uniform spacing between the various components. When the bi-cell units are stacked and secured, sufficient openings for air are formed to allow air to contact the air/oxygen electrodes.

    摘要翻译： 本发明公开了一种具有至少一个双电池的燃料电池。 双电池可以串联堆叠以实现期望的功率输出。 每个双电池是包括两个氢电极，两个空气/氧电极，两个电解液分配器和气体扩散器的晶胞。 氢电极彼此相邻配置，空气/氧电极设置在氢电极的外端。 在每个相邻设置的氢电极和空气/氧电极之间设置电解质分配器。 气体扩散器/分配器设置在氢电极之间。 在电极和分配器之间注入弹性体材料以提供机械稳定性。 此外，整个双电池被弹性体材料包覆成型。 肋条设置在分配器中，以防止弹性体材料流入设计用于电解质流动，氢气流动和机械约束的区域，并促进各种部件之间的均匀间隔。 当双电池单元堆叠并固定时，形成足够的空气开口以允许空气接触空气/氧气电极。

    Compositionally and structurally disordered multiphase nickel hydroxide positive electrode containing modifiers
    49.
    发明授权
    Compositionally and structurally disordered multiphase nickel hydroxide positive electrode containing modifiers 失效

    公开(公告)号：US5948564A

    公开(公告)日：1999-09-07

    申请号：US782863

    申请日：1997-01-13

    申请人： Stanford R. Ovshinsky ,  Michael A. Fetcenko ,  Srinivasan Venkatesan ,  Arthur Holland

    发明人： Stanford R. Ovshinsky ,  Michael A. Fetcenko ,  Srinivasan Venkatesan ,  Arthur Holland

    IPC分类号： H01M4/26 ,  H01M4/28 ,  H01M4/32 ,  H01M4/52 ,  H01M4/80 ,  H01M10/34

    CPC分类号： H01M10/345 ,  H01M4/26 ,  H01M4/28 ,  H01M4/32 ,  H01M4/52 ,  H01M4/80

    摘要： A positive electrode for use in alkaline rechargeable electrochemical cells comprising: a material comprising a compositionally and structurally disordered multiphase nickel hydroxide host matrix which includes at least one modifier chosen from the group consisting of F, Li, Na, K, Mg, Ba, La, Se, Nd, Pr, Y, Co, Al, Cr, Mn, Fe, Cu, Zn, Sc, Sn, Sb, Te, Bi, Ru, and Pb. A process for forming a high loading uniformly distributed multiphase substantially nitrate free sintered positive electrode for use in an alkaline rechargeable electrochemical cell, the process comprising: (1) fabricating sintered electrode material by forming a slurry of nickel powder, water, carboxymethylcellulose binder, methyl cellulose binder, and a poly(ethylene oxide) polymer; spreading the slurry on a preoxidized perforated nickel substrate; drying the slurry; and sintering the slurry; (2) impregnating the sintered electrode material using multiple impregnation cycles to attain high loading, where each impregnation cycle comprises the steps of: placing the sintered electrode material on a rack; dipping the rack into nickel nitrate; allowing the rack to drip dry; dipping the dried rack into NaOH solution; spraying the rack in a first tank with deionized water overflowing from a second tank; dipping the rack in the second tank filled with deionized water overflowing from a third tank; dipping the rack in the third tank filling with deionized water at a rate of 8-10 gpm; drying the rack; and flipping the rack to attain uniform deposition of material; where in the median dip cycle and in the final dip cycle of the multiple impregnation cycles, the step of dipping the rack into nickel nitrate is replaced by a step of dipping the rack into cobalt nitrate to produce an enriched cobalt surface; and (3) forming the impregnated sinter into positive electrode material by presoaking the impregnated sinter in NaOH presoak tanks to substantially eliminate nitrates; brushing the presoaked impregnated sinter in a surface brushing station; charging the brushed impregnated sinter; discharging the charged impregnated sinter; rinsing the discharged impregnated sinter; and drying the rinsed impregnated sinter to complete the formation of positive electrode material.