铝-空气电池用Al-0.1Sc-0.08Ce合金电化学与放电性能研究

In this paper, Al-Sc-Ce intermediate alloy was directly prepared by crcrite aluminum electrolysis method, and then remelted with pure aluminum to prepare Al-0.1Sc-0.08Ce alloy anode for Al-air battery. The open-circuit potential, polarization curve, impedance spectrum, discharge performance and electrode morphology characterization were adopted. It was found that the addition of Sc and Ce elements could significantly reduce the corrosion current density and hydrogen evolution reaction rate of aluminum anode, enhance the corrosion resistance of the alloy, reduce the corrosion hole size on the surface of aluminum alloy anode, and significantly improve the discharge efficiency and energy density. Heat treatment can further improve the morphology and distribution of Al11Ce3 precipitated phase in Al-0.1Sc-0.08Ce alloy, improve the performance of aluminum anode, reduce the corrosion current and hydrogen evolution rate, and make the peak power density and discharge voltage reach 3934Wh kg-1 and 1.332V, respectively.