Development of Novel Organic Materials with High Energy and Power Densities

高能量和功率密度新型有机材料的开发

基本信息

批准号：
07555267
负责人：
OYAMA Noboru
金额：
$ 14.34万
依托单位：
Tokyo University of Agriculture and Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07555267/
关键词：
Secondary Battery Organosulfur Compounds Conducting Polymer Copper Current Collector ポリマー電池

项目摘要

Secondary batteries with high energy and power densities is expected for further development of electric vehicles and many other electric instruments. Objective of the present work is developing novel organic materials for high performance secondary batteries. First we examined electron transfer between a thiol (2,5-dimercapto-1,3,4-thiadiazole, DMcT) and a conducting polymer (polyaniline, PAn). As a result, it was found that the reversible electron transfer is possible between them. We have already found that the DMcT-PAn composite can serve as a high energy density cathode material for a secondary battery. However, charging current and discharging current of the battery were not high enough for the practical use. Then, we used a copper current collector for the composite cathode instead of a conventional carbon current collector. In the first few cycles, dissolution of the copper current collector was seen during the charging process. Simultaneously, an increase in the discharge capacity was seen. Since the charge-discharge capacity can exceed the theoretical capacity, which is calculated from amounts of DMcT and PAn, dissolved copper ion (s) must function as cathode active material. This suggests that some complex is formed between copper ion (s) and DMcT.Charging/discharging currents were high enough for the practical use. Although we have no clear evidence for the complex formation at present, we observed some change in the visible spectrum of a Cu (ClO_4)_2 solution upon addition of DMcT.Complex formation of Cu (I) and Cu (II) with DMcT has been reported as well as other transition metal ions. Other thiadiazoles also form complexes with copper and other metal ions. The complexes should be promising as cathode materials for secondary batteries.

预计电动汽车和许多其他电动仪器的二级电池将有高能和电源密度。本工作的目的是开发用于高性能辅助电池的新型有机材料。首先，我们检查了硫醇（2,5-二甲氧氨基1,3,4-噻二唑，DMCT）和导电聚合物（Polyaniline，PAN）之间的电子转移。结果，发现它们之间的可逆电子传递是可能的。我们已经发现，DMCT-PAN复合材料可以用作二级电池的高能量密度阴极材料。但是，电池的充电电流和排放电流不足以实用。然后，我们将铜电流收集器用于复合阴极，而不是常规的碳电流收集器。在前几个周期中，在充电过程中看到了铜电流收集器的溶解。同时，出现了排放能力。由于电荷分离能力可以超过理论能力，该能力是根据DMCT和PAN量计算得出的，因此溶解的铜离子必须充当阴极的活性材料。这表明在铜离子和DMCT之间形成了一些复合物。充电/放电电流足够高以进行实际使用。尽管我们目前尚无清楚的证据表明复合物的形成，但我们观察到在添加了dmct.com.plex形成cu（i）和cu（i）和cu（ii）后，已经报告了cu（clo_4）_2溶液的可见光谱，并报告了dmct的cu（i）和其他过渡金属离子。其他硫唑也与铜和其他金属离子形成复合物。这些复合物应作为二级电池的阴极材料有希望。