摘要
采用水热-固相二步法合成了纳米棒状磷酸铁锂(LiFePO4)正极材料,并对晶体结构、形貌和性能进行了XRD、SEM、透射电子显微镜(TEM)和恒流充放电分析。利用水热法可合成纳米棒状磷酸亚铁[Fe3(PO4)2·H2O]前驱体,固相法可得到纯相LiFePO4纳米棒。在2.5~4.2V充放电,产物的1.0C、5.0C放电比容量分别为125mAh/g和104mAh/g,具有良好的高倍率性能。
Lithium iron phosphate(LiFePO4) nanorods were synthesized by a two-step method of hydrothermal combined with solid-state reaction. The crystal structure, morphology and performance were characterized by XRD, SEM, TEM and galvanostatie charge-discharge analyses. Fe3 (PO4)2·H2O precursor was synthesized by a facile hydrothermal method, then olivine phase pure LiFePO4 nanorods were obtained by a solid-state method. The product had fine hlgh-rate performance, when eharged-dlscharged in 2.5 - 4.2 V,its specific diseharge capacity was 125 mAh/g and 104 mAh/g at 1.0 C and 5.0 C,respeetively.
出处
《电池》
CAS
CSCD
北大核心
2012年第5期239-241,共3页
Battery Bimonthly
基金
国家自然科学基金(21001117)
中南大学仪器共享开放基金