用沉淀法制备出作为全钒液流电池负极电催化材料的具有单斜结构的纳米氧化钨粉体材料,并用透射电镜(TEM)和X-射线衍射(XRD)进行了表征.将此纳米氧化钨粉体用Nafion溶液涂覆于玻碳电极上,在1.5mol/L V(Ⅲ)+/1.5mol/L V(Ⅳ)+6mol/L H2SO4的电解液中通过循环伏安法测试了V(Ⅱ)/V(Ⅲ)氧化还原反应的反应活性和可逆性.循环伏安数据显示了V(Ⅱ)/V(Ⅲ)氧化还原反应在涂覆有氧化钨粉体的玻碳电极表面的反应为扩散控制的准可逆过程,室温下该反应的标准速率常数为4.22×10-6 m/s. The nano-tungsten oxide powder with monoclinic structure was prepared by precipitation method as the negative electrode electrocatalytic material for all-vanadium redox flow battery and characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD) The tungsten powder was coated on the glassy carbon electrode with Nafion solution. The cyclic voltammetry of V (Ⅱ) in the electrolyte solution of 1.5mol / LV (Ⅲ) + / 1.5mol / LV (Ⅳ) + 6mol / ) / V (Ⅲ) redox reaction cyclic voltammetry data showed that the reaction of V (Ⅱ) / V (Ⅲ) redox reaction on the surface of the glassy carbon electrode coated with tungsten oxide powder was The quasi-reversible diffusion-controlled process has a standard rate constant of 4.22 × 10-6 m / s at room temperature.