聚吲哚的合成及在锂离子电池中的应用

Synthesis of polyindole and its application in Li-ion battery

采用化学合成方法制备了导电聚合物-聚吲哚,并将其应用在聚吲哚基聚合物锂离子电池中,这种聚吲哚基聚合物锂离子电池具有优异的循环寿命并且能够大电流充放电。该锂离子电池采用导电聚合物聚吲哚为正极,负极采用锂离子电池的负极,四氟硼酸锂为电解液。简易实验电池的性能测试表明:在10～103A/m2放电情况下,电池容量在80～70mAh/g,电池的循环寿命超过30000次;在室温储存80d后,电池的剩余容量仍然高达80%,电池具有优异的储存性能。基于这些结果,对电池的充放电机理进行了探讨。

A polyindole-based Li polymer secondary battery system was developed,which had a high electromotive force together with excellent cycle property and was capable of fast charging and discharging.The batteries took polyindole as the cathode,Li as the anode and LiBF4 as the electrolytic solution.The performance tests show that the capacity of the battery can reach about 80-70 mAh/g at discharge current densities of 10-103 A/m2,and the cycle life is over 30 000 times.The self-discharge tests show that the residual capacity remains 80% of initial capacity after 80 days storage.These results show the battery system has very excellent cycle property and storage property.