All-vanadium redox flow battery electrode containing active carbon nanofiber layer and preparation method of all-vanadium redox flow battery electrode

The invention provides an all-vanadium redox flow battery electrode and a preparation method thereof, the all-vanadium redox flow battery electrode comprises a matrix electrode and an active carbon nanofiber layer which is attached to one side of the matrix electrode and is composed of active carbon nanofibers, and the active carbon nanofibers contain nanoscale pore diameters and rich oxygen-containing functional groups. According to the invention, the cycle life, the discharge capacity and the energy efficiency of the all-vanadium redox flow battery can be obviously improved. 本发明提供一种全钒液流电池电极及其制备方法，所述全钒液流电池电极包括基体电极和附在所述基体电极一侧的由活性纳米碳纤维组成的活性纳米碳纤维层，所述活性纳米碳纤维含有纳米级的孔径及丰富的含氧官能团。本发明可以显著提高全钒液流电池的循环寿命、放电容量和能量效率。