关于层状化合物氧基氯化铁(FeOCl)结构与物理化学特性的研究  

Studies on the structure and physical chemistry characteristics of layer compound iron oxychloride (FeOCI)

作　　者：陈震[1] 

机构地区：[1]福建师范大学实验中心

出　　处：《电源技术》1994年第2期17-21,共5页Chinese Journal of Power Sources

摘　　要：讨论了氧基氯化铁FeOCl的晶体结构.FeOCl的晶格参数:a=0.378nm、b=0.792nm、c=0.330nm.在a、b面上每个氧原子与三个铁原于相部,每个铁原子与三个气原子及一个氯原子相邻.Cl-Cl间的最近距离为0.368nm,由范德华力相结合.在充放电时Li与溶剂分子易沿着这个由范德华力相键合的面进入FeOCl的晶体中,但是FeOCl自身的结构欠稳定,当大分子的有机溶剂嵌入FeOCl层间后,将导致结构的崩溃,因此FeOCl只能作为锂一次电池的阴极材料,作为二次电池阴极材料时必需对其进行改性处理.The crystal structure of iron oxychloride has been studied. The lattice parameters are a = 0.378nm, b = 0.792nm, c = 0.330nm. In the a, b plane each oxygen atom is bonded to three iron atoms, and each iron is bonded to three oxygen atoms and one chlorine atom. The nearest nonbonding C1-C1 distance, which spans the Van der Waals gap in the unintercalated compound is 0.368nm.Therefore, the intercalation and deintercalation of the solvent can easily take place. FeOCl can be used as a cathodic material in the primary lithium battery. But FeOCl is unstable, it shall be gradually decomposed during discharge and charge. So that, FeOCl must be taken a modification for use in secondary lithium battery.

关 键 词：氧基氯化铁 层状化合物 电池 

分 类 号：TM241[一般工业技术—材料科学与工程]