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    • 87. 发明授权
    • Method of forming CoOOH and NiOOH in a NiMH electrochemical cell and an electrochemical cell formed thereby
    • 在NiMH电化学电池中形成CoOOH和NiOOH的方法以及由此形成的电化学电池
    • US06270535B1
    • 2001-08-07
    • US09148176
    • 1998-09-04
    • Deepika B. Singh
    • Deepika B. Singh
    • H01M452
    • H01M4/0447H01M4/52H01M10/288H01M10/345H01M10/44H01M10/446H02J7/0075Y10T29/49108
    • A formation procedure for a NiMH electrochemical cell is disclosed that significantly shortens the time required to fully form such a cell. The formation procedure includes a first step during which the cell is charged at a constant voltage of preferably 1.0 volt for approximately three hours. A second charging step is performed by applying either a constant charge current at a predetermined rate of C/3 for five hours or applying a constant voltage of 1.45 to 1.5 volts for five to nine hours. A third step may optionally be used whereby the cell is charged at a constant current of C/10 for about two hours. NiMH cells subjected to this formation procedure have a much greater percentage of the starting cobalt material in the positive electrode converted to CoOOH thereby improving the conductive matrix formed about the Ni(OH)2/NiOOH particles, which constitute the active material of the positive electrode. The disclosed inventive formation procedures result in higher utilization, higher cell capacities following long-term storage, or storage at high temperatures as well as improved capacity recovery following deep discharge.
    • 公开了一种NiMH电化学电池的形成方法,其显着缩短了完全形成这种电池所需的时间。 形成步骤包括第一步骤,在该步骤中,电池以优选1.0伏的恒定电压充电大约三个小时。 通过以C / 3的预定速率施加恒定充电电流5小时或施加1.45至1.5伏的恒定电压进行5至9小时来执行第二充电步骤。 可以任选地使用第三步骤,由此电池以C / 10的恒定电流充电约2小时。 经过这种形成过程的NiMH电池具有比正转化成CoOOH的起始钴材料的百分比大得多,从而改善了构成正极活性材料的Ni(OH)2 / NiOOH颗粒周围形成的导电基体 。 所公开的本发明形成方法导致更高的利用率,长期储存后的更高的电池容量或在高温下的储存以及在深度放电之后改进的容量恢复。
    • 90. 发明授权
    • Rechargeable lithium battery for use in applications requiring a low to
high power output
    • 可充电锂电池,用于需要低至高功率输出的应用
    • US5612152A
    • 1997-03-18
    • US634115
    • 1996-04-17
    • John B. Bates
    • John B. Bates
    • H01M2/20H01M4/04H01M6/40H01M6/42H01M10/36H01M10/02
    • H01M10/0562H01M4/0447H01M6/40H01M2/20H01M6/42
    • Rechargeable lithium batteries which employ characteristics of thin-film batteries can be used to satisfy power requirements within a relatively broad range. Thin-film battery cells utilizing a film of anode material, a film of cathode material and an electrolyte of an amorphous lithium phosphorus oxynitride can be connected in series or parallel relationship for the purpose of withdrawing electrical power simultaneously from the cells. In addition, such battery cells which employ a lithium intercalation compound as its cathode material can be connected in a manner suitable for supplying power for the operation of an electric vehicle. Still further, by incorporating within the battery cell a relatively thick cathode of a lithium intercalation compound, a relatively thick anode of lithium and an electrolyte film of lithium phosphorus oxynitride, the battery cell is rendered capable of supplying power for any of a number of consumer products, such as a laptop computer or a cellular telephone.
    • 可以使用采用薄膜电池特性的可充电锂电池来满足在较宽范围内的功率要求。 利用阳极材料膜,阴极材料膜和非晶态磷酸氢氧化锂的电解质的薄膜电池可以串联或并联连接,以便同时从电池中取出电力。 此外,采用锂嵌入化合物作为其阴极材料的这种电池单元可以以适于为电动车辆的操作供电的方式连接。 此外,通过在电池单元内结合锂嵌入化合物的相对厚的阴极,锂的相对厚的阳极和磷酸氢氧化锂的电解质膜,电池单元能够为多个消费者中的任何一个供电 产品,例如膝上型计算机或蜂窝电话。