正极材料LiCoPO_4的低热固相法合成及表征  

Synthesis and characterization of cathode material LiCoPO_4 with a low-heating solid-state reaction

作　　者：廖森[1] 柴倩[1] 陈智鹏[1] 何宇[1] 李宇[1] 吴文伟[1] 

机构地区：[1]广西大学化学化工学院,广西南宁530004

出　　处：《广西大学学报（自然科学版）》2012年第3期455-459,共5页Journal of Guangxi University（Natural Science Edition）

基　　金：广西科学基金资助项目(桂科自0991108;桂科自0832111)

摘　　要：为了寻找制备正极材料LiCoPO4的新方法,在室温下把NH4CoPO4.H2O和LiOH.H2O混合研磨成均匀的粉末,将粉末烘干后,于300℃焙烧3 h进行低热固相反应,即可得到正极材料LiCoPO4晶体。用X-射线衍射(XRD),红外光谱(IR)及扫描电镜(SEM)对产物进行了表征,结果表明,4种不同焙烧时间(3,4,5,6 h)经300℃焙烧均得到具有正交晶系物相、空间群为Pnma(62)的LiCoPO4晶体材料。与已有的报道相比,文中所述的合成方法不仅显著地降低了焙烧温度,而且大幅缩短了焙烧时间。In order to search a new method for the preparation of cathode material LiCoPO4, a mix- ture powder of NH4 CoPO4 · H2O and LiOH · H2O obtained by careful grinding at room temperature was baked at 300 ℃ for 3 h. The products were characterized with XRD, IR and SEM. The results showed that well crystalline sheet of LiCoPO4 with orthorhombic structure and space group Pnma （62） was all formed after baking at 300 ℃ for 3, 4, 5, and 6 h. Compared with the existing re- ports, the synthesis method described in ature, but also dramatically reduces the this paper not only significantly reduces the baking temperbaking time

关 键 词：无机非金属材料 磷酸钴铵 低热固相合成 

分 类 号：O614.432[理学—无机化学] O613.62[理学—化学]