Low-temperature synthesized of Li_1+xV_3O_8 as a cathode material for rechargeable lithium-ion Batteries

摘要

Li_1+xV_3O_8 was synthesized at 400 approx 45 deg C by a sol-gel method in which a citric acid solution was added to an aqueous solution of LiNO_3 and NH_4VO_3. The influences of synthesis conditions on its first discharge capacity was investigated y chermogravimetric analysis. The structure of Li_1+xV_3O_8 was characterized by infrared. X-ray diffraction, scanning electron microscopy. The relationship between the structure and the electrochemical perofrmance were investigate.d The resultant product synthesized under the optimum synthesis conditions showed a high discharge capacity of 350 mAh/g, which is promising an excellent cathode material for high-energy, long-life rechargeable lithium-ion batteries.