Fe^3＋-doped lithium vanadium oxide Li1.1Fe0.05V2.95O8 and blank sample LiV3O8 were synthesized by a citric acid assisted sol-gel process. TG-DTA, XRD, FT-IR were used to characterize the physico-chemical properties of the samples. EIS, galvanostatic charge/discharge tests were applied to investigate the electro-chemical performace of the cathode material. The results show that Fe^3＋-doped LiV3O8 crystallizes at lower temperature and reserves smaller crystallinity sintered at the same temperature and for the same time compared with LiV3O8 blank. Li1,1Fe0.05V2.95O8 shows larger discharge capacity, especially that at high discharge current. At the charge/discharge current of 75 mA.g^-1, 197 mA·g^-1, 373 mA.g^-1 and coming back to 75 mA.g^-1, the initial discharge capacity are 307 mAh·g^-1, 237 mAh.g^-1, 162 mAh.g^-1 and 302 mAh·g^-1, respectively. The discharge capacity remains steady at 278.6 mAh.g^-1 when the charge/discharge current comes back to 75 mA·g^-1. A preliminary explanation was also given.%采用柠檬酸辅助的溶胶-凝胶法制备了Fe^3＋掺杂Li1.1Fe0.05V2．95O8及对比样品LiV3O8正极材料．使用TG—DTA、XRD、FT-IR等手段表征了正极材料的物理化学特性，并采用EIS、恒电流充放电等手段研究了其电化学性能．结果表明：Fe^3＋掺杂LiV3O8与对比LiV3O8相比，能在更低的温度下晶化，能在相同温度、相同时间煅烧下保持更小的晶粒度．Li1.1Fe0.05V2．95O8与对比LiV308相比，特别是大电流下的放电容量有较大的提高，在75mA·g^-1，197mA·g^-1，373mA·g^-1及重新回到75mA·g^-1电流下的初始放电容量分别是307mAh·g^-1，237mAh·g^-1．162mAh·g^-1和302mAh·g^-1．在回复到75mA·g^-1电流后放电容量能非常稳定保持在278．6mAh·g^-1左右，并同时给出了初步的理论解释．
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