Method of making a porous carbon cathode, a porous carbon cathode so
made, and electrochemical cell including the porous carbon cathode
    6.
    发明授权
    Method of making a porous carbon cathode, a porous carbon cathode so made, and electrochemical cell including the porous carbon cathode 失效
    制造多孔碳阴极的方法,如此制造的多孔碳阴极和包括多孔碳阴极的电化学电池

    公开(公告)号:US4514478A

    公开(公告)日:1985-04-30

    申请号:US640265

    申请日:1984-08-13

    IPC分类号: H01M4/96 H01M6/14

    摘要: A porous carbon cathode for use in an electrochemical cell is made by wetg the carbon black with a 1:1 to 1:3 mixture of isopropyl alcohol:water, adding a binding agent thereto, smearing the resulting stiff paste on a thin expanded metal screen and pressing and rolling to the desired thickness, drying the cathode sheet in a vacuum oven at about 100.degree. C. for one hour while a weight is placed above and below the cathode sheet which is sandwiched between two pieces of blotting paper, the total weight applied being sufficient for the cathode to retain structural integrity, removing the weight and blotting papers and inserting the cathode sheet in an elevated drying oven at about 280.degree. C. for about one hour, and cooling the cathode sheet between blotting paper, repressing and rolling. Cathodes prepared by this method appear structurally strong, maintain their physical integrity with a minimum of cracking and flaking, and do not crumble when cut. The porous carbon cathode is particularly advantageous when included in a lithium sulfuryl chloride cell, but can be used in any system requiring porous carbon cathodes.

    摘要翻译: 用于电化学电池的多孔碳阴极是通过用1:1:1:1:1:1:2的异丙醇:水的混合物润湿炭黑制成的,向其中加入粘结剂,将所得的硬糊涂抹在薄的金属扩孔 并压制成所需的厚度,在真空烘箱中在约100℃下干燥阴极片1小时,同时将重量置于夹在两片吸印纸之间的阴极片的上下,总重量 施加足以使阴极保持结构完整性,去除重量和吸印纸并将阴极片在约280℃的升高的干燥炉中插入约1小时,并在吸印纸,压制和轧制之间冷却阴极片 。 通过这种方法制备的阴极在结构上很强,在最小的开裂和剥落下保持其物理完整性,切割时不会破碎。 当包含在锂磺酰氯单元中时,多孔碳阴极是特别有利的,但可以用于需要多孔碳阴极的任何系统中。