(福建师范大学 化学与材料学院，福州 350007)
摘 要:
关键字: 电解；放电性能；热处理温度；KV5O13−x-C电极
（College of Chemistry and Material Science, Fujian Normal University, Fuzhou 350007, China）
Abstract:A KV5O13−x-C positive electrode was prepared by using a combined method of two steps for the electrolyzing and heat treatment without the use of the adhesive. The relationship between the synthesis condition and discharge performance was characterized by discharge test, XRD, FTIR, TG-DSC and Environmental SEM techniques. The results show that the optimal technology parameters are determined as follows: In the electrolyzed step, the electrolyte consisted of the mixture solution of 24 g/L of K2SO4 and a saturated solution of NH4VO3 at 40 ℃, and the current density on the graphite slice cathode is 0.3 mA/cm2; in the heat treatment step, a flow-rate of 30 mL/min of air and a temperature of 300 ℃ are employed. The as-prepared KV5O13−x-C electrode possesses good thermal stability for the stable bond of V-O, and it exhibits a discharge capacity of 238 mA∙h/g at the current of 0.1 C.
Key words: electrolyzing; discharge performance; heat treatment temperature; KV5O13−x-C electrode
