A study on corrosion behavior of FeSi alloy matrix composites using wire beam electrode

In order to obtain high performance anode material of lithium ion battery, four samples of FeSi alloy base composites were synthesized by simple solid-state reaction. The anode active materials, which consist of Al, Cu, C, and C/Cu with FeSi alloy respectively, were heated to 700 degrees C under continuous argon flow to obtain four composite anode materials to improve electrical conductivity and corrosion resistance. In addition. The corrosion behavior of these four composite anode materials in electrolyte solution were studied by Cu wire beam electrode (WBE). The morphology and composition of the composite anode materials were analyzed by scanning electron microscope (SEM). The results show that the four nano-powders can be uniformly coated on the surface of FeSi alloy. The results of WBE test show that the corrosion resistance of C/Cu doped samples is the best, which is attributed to the C and Cu of strong conductivity can increase the conductivity, enhance corrosion resistance, reduce the internal resistance and mechanical stress of FeSi alloy anode.