陕西科技大学学报（自然科学版）Issue(5)：56-59,99,5.
溶胶-凝胶法合成 Li3V2（PO4）3／C复合材料及其合成活化能研究
Preparation and synthesized activation energy of Li3 V2 (PO4)3/C composites by sol-gel method
摘要
Abstract
Li3V2 (PO4 )3/C composites were prepared via a sol‐gel process using NH4VO3 , LiOH · H2 O and H3 PO4 as raw materials and citric acid as complexing agent .The influences of calcination temperature on the phase composition , microstrucrure and electrochemical properties of the composites were characterized by XRD ,SEM ,TEM and electrochemical methods ,etc .The compound synthesized at 750 ℃ take on pure monoclinic crystal structure , w hich exhibit the highest initial discharge capacity (135 .1 mAh · g -1 at 0 .5 C and 109 .1 mAh · g -1 at 1 C ,respectively ) and good capacity retention (88% at 0 .5 C and 85% at 1 C after 50 cycles ,respectively) in the voltage range of 3 .0~4 .6 V .The synthesized activation energy of Li3 V2 (PO4 )3 is 92 .4 kJ · mol-1 ,which was investigated by Kissinger method .关键词
磷酸钒锂/正极材料/溶胶-凝胶法/合成活化能Key words
lithium vanadium phosphate/cathode materials/sol-gel method/synthesized ac-tivation energy分类
动力与电气工程引用本文复制引用
夏傲,黄剑锋,谈国强..溶胶-凝胶法合成 Li3V2（PO4）3／C复合材料及其合成活化能研究[J].陕西科技大学学报（自然科学版）,2015,(5):56-59,99,5.基金项目
国家自然科学基金项目（51002092，51172135）；陕西科技大学博士科研启动基金项目（BJ15-04）；陕西科技大学学术骨干培育计划项目（XSG（4）005） （）
