锂离子电池正极材料Li2MnSiO4研究进展.pdf

中国科技论文在线 # 锂离子电池正极材料 Li MnSiO 研究进展 2 4 唐致远，魏怡* （天津大学化工学院，天津 300072） 摘要：Li MnSiO 作为一种新型的锂离子电池正极材料，因其原料来源广泛，价格低廉，对 2 4 环境友好和较高的理论容量而受到青睐，有望成为新一代锂离子电池正极材料的代表者。本 文就锂离子电池Li MnSiO 正极材料的结构和性能进行了介绍，综述了现有的Li MnSiO 正极 2 4 2 4 材料的制备方法，并针对材料导电率低，结构不稳定的缺点，提出了改进方法，如碳包覆和 体相掺杂等，最后对其未来的发展趋势进行了展望。 关键词：应用化学；锂离子电池；正极材料；Li2MnSiO4 中图分类号：O69 The research progress on cathode material Li MnSiO of 2 4 lithium ion battery Tang Zhiyuan, Wei Yi (School of Chemical Engineering and Technology ,Tianjin university, TianJin 300072) Abstract: Li MnSiO , as a novel lithium ion battery cathode material, is promising due to its wide 2 4 source, low cost, environmental benign and high specific capacity. In this paper the crystal structure, electrochemical performance and the synthesizing methods of Li MnSiO were presented. The defects, 2 4 such as low electronic conductivity and unstable crystal stability, were promoted improvements, such as carbon coating and metal doping. Finally the prospect of application tendency was depicted. Keywords:Applied chemistry; lithium ion battery; cathode material; Li2MnSiO4 0 引言 锂离子电池一直受到现代飞速发展的电子产品的青睐，从最初的 LiCoO 、LiMnO 、 2 2 LiNiO2[1-3]到如今的磷酸盐类的聚阴离子，正极材料的创新一直是人们所追逐的焦点。硅酸 盐类聚阴离子作为新一代的锂离子电池正极材料逐步进入研究者的视野。Li2MSiO4