SAFETY HIGH CAPACITY LITHIUM SECONDARY BATTERY HAVING HIGHLY ELECTROCONDUCTIVE CODEPOSITES FILMS OF CARBON POWDER AND POLYMER AS AN ANODE AND CATHODE.

1.碳粉共沉淀物：以几种不同比表面积的碳黑粉末为样品。将粉末悬浮在含有1M LiClO_4和0.1M吡咯单体的电解液中，将铂网固定在溶液中进行阳极氧化。我们已经成功地获得了碳和聚吡咯的导电均一共混物。与单独使用聚吡咯相比，阴极特性提高了五倍以上(发表在DENKIKAGAKU，NO.11,1992)。提交给《能源》杂志)。粘结剂的评价：评价了聚乙烯、聚四氟乙烯、聚苯乙烯等作为锂阳极碳活性材料的粘结剂。将这些聚合物与碳粉加热捏合制成片状电极，并对其进行阳极性能测试。发展了一种新的有效的扫描电子显微镜评价方法(在第35届国际电源研讨会上发表于DENKIKAGAKU第10期，1992年)。活性碳纤维电极：将具有很大比表面积的活性碳纤维在含有吡咯单体的电解液中阳极氧化，在其表面涂覆一层聚吡咯膜。利用这种共沉积电极材料，我们成功地将阴极容量提高到了220mAhg，这是我们实验室以外从未达到的值。(在第一届西太平洋电化学会议和第33届电池研讨会上发表)。微毛细管中液体的凝固点和熔点的降低：我们发现了液体在微毛细管中的熔点和凝固点的降低和分离的新现象。根据相成核理论(在第12届IUPAC国际会议和第一届西太平洋电化学会议上提出)解释了这些异常现象。

1. Carbon Powder Codeposites: Several kinds of carbon black powder having different specific surface area were taken as samples. The powder was suspended in the electrolyte containing 1M LiClO_4 and 0.1M pyrrole monomer, the Pt mesh set in the solution being anodized. We have succeeded to obtain a conductive homogeneous codeposite of the carbon and polypyrrole. The cathodic characteristics was found increased over five times as compared to those of polypyrrole alone (Published in DENKIKAGAKU,No.11,1992. Submitted to The Journal of Power Sources).2. Evaluation of the Binder: Polyethylene, Teflon, polystyrene etc. were evaluated as binders of carbon active materials for Li anode. These polymers were kneaded with carbon powder with heat to make sheet electrode which was offered to test the anode characteristics. A new effective evaluation method on SEM was developed(Presented at the 35th International Power Sources Symposium, Published in DENKIKAGAKU No.10,1992).3. Active Carbon Fiber Electrode: Active carbon fiber having very large surface area was coated with polypyrrole film by anodizing it in the electrolyte containing pyrrole monomer. With this codeposited electrode material we have succeeded to increase the cathode capacity up to 220mAh/g whose value has never been attained outside of our laboratory. (Presented at the 1st West Pacific Meeting of Electrochemistry, and at the 33rd Battery Symposium).4. Depression of Freezing and Melting Point of Liquid in Microcapillary: We have found a new phenomena of the depression and separation of the melting and the freezing points of liquid when it is held in microcapillary. The unusual phenomena were elucidated on the basis of the phase nucleation theory(Presented at the 12th IUPAC International Conference and the 1st West Pacific Meeting of Electrochemistry).