铁钴镍合金在锂硫电池正极材料中的应用研究

摘要

In this paper, FeCoNi alloy was introduced into CNTs / graphene composites, and the cathode material with three-dimen-sional network structure was formed. The cathode was used in lithium sulfur battery. Through the performance test, a series of results showed that the introduction of FeCoNi alloy could effectively improve the overall performance of the battery, which was due to the three-dimensional conductive network structure to improve the conductivity of the electrode, while the introduction of FeCoNi alloy was enhanced the physical and chemical adsorption for polysulfide during charge and discharge process of the battery, and even may accelerate the polysulfide conversion reaction.%本文在羧基化碳纳米管/石墨烯复合材料中引入铁钴镍合金,形成具有三维网络结构的正极材料,并制备成正极片用于锂硫电池中.一系列的性能测试结果表明,铁钴镍合金的引入有效提高了电池的整体性能,这是由于三维导电网络结构提高了电极的导电性,同时铁钴镍合金的引入增强了电池充放电过程中对多硫化物的物理和化学吸附,甚至可能加快多硫化物转化反应的动力学过程.