由黄磷副产物磷铁合成球形LiFePO_4  

Synthesis of Spherical LiFePO_4 from Ferrophosphorous By-product of Yellow Phosphorus

作　　者：刘睿[1] 王贵欣[1] 闫康平[1] 李秀丽[1] 

机构地区：[1]四川大学化学工程学院,四川成都610065

出　　处：《合成化学》2010年第5期639-641,共3页Chinese Journal of Synthetic Chemistry

基　　金：四川大学青年基金资助项目(0030705505040)

摘　　要：以生产磷的副产物磷铁和混合锂盐(Li2CO3+LiOH.H2O)为原料,采用流变相法成功地合成了具有高附加值的锂离子电池正极材料——球形磷酸亚铁锂(LiFePO4,1),其结构经XRD表征,表面形貌通过SEM观察,氧化还原电位由循环伏安曲线测定。在750℃焙烧15 h制备的1属正斜方晶系,平均粒径38.3 nm,氧化、还原电位分别为3.51 V和3.36 V。A cathode materials for lithium ion battery,spherical LiFePO4（1）,was synthesized successfully from ferrophosphorous by-product of yellow phosphorus and mixed lithium salts（Li2CO3＋LiOH·H2O） by a rheological phase reaction method.The structure was characterized by XRD,the morphology was observed by SEM and the oxidization/reduction voltages were determined by cyclic voltammogram.The results showed that 1 prepared at 750 ℃ for 15 h belonged to orthorhombic system,the average crystal size was about 38.3 nm,the oxidization voltage and reduction voltage were at 3.51 V and 3.36 V,respectively.

关 键 词：磷铁 锂离子电池 LIFEPO4 流变相法 合成 

分 类 号：O613.62[理学—无机化学]