!!!!!" !" !!!!!" !" !!!!!!! : 2005-03-05 : 2005-06-23 (No.2002CB211800) * E-mail : yanjie@nankai.edu.cn : ,, 33 , ; : 0 , , , , , 3d , , / [1] , , ; , ; , , , , LiVP O 4F * ( , 300071) : ; ; ; : O613.41 ; O614.51 + : A : 1001-4861(2005)10-1597-04 Preparation and Electrochemical Perfor Lithium Battery LiVPO 4 F Cathode Material LI Yu-Zhan REN Jun-Xia ZHOU Zhen GAO Xue-Pin * (Institute of New Energy Material Chemistry, Nankai Abstract: A new cathode material, LiVPO 4 F, has been synthesized through two the first step, vanadium pentoxide, ammonium dihydrog heated at 300 and reacted at 750 under an inert atmosphere to yield VPO 4 . In the second step, the product LiVPO 4 F was synthesized bythe reaction w 4 and LiF. The L 4 F was characterized by X-ray diffraction, scanning elec testing measurements. The LiVPO 4 F is triclinic crystalline system. At 0 pacities were 150.1 mAh g -1 and 132.6 mAh g -1 ; At 0.2 C rate, the first charge/ mAhg -1 and 125.2 mAh g -1 . The LiVPO 4 F fromthis work has higher charge/d respectively. Key words: rechargeable lithium ion battery; cathode material; 4 F; electrochemical properties ! 10 200510 Vol.21 No.1 Oct. . 2005 !! CHINESE JOURNAL OF INORGANIC CHEMISTRY