This invention provides a Mg-Sr-In
alloy anode material for
magnesium-air batteries and its preparation method, relating to the field of
anode material technology. The
magnesium-Sr
alloy anode material for
magnesium-air batteries described in this invention has a
chemical composition mainly of Sr, In, and Mg. By
doping pure magnesium anodes with appropriate amounts of Sr and In elements for microalloying, the
microstructure of the
magnesium alloy is altered, enhancing the
corrosion resistance of the magnesium-air battery anode, activating anode reaction
kinetics, maintaining the anode activation area, suppressing the negative differential effect, and reducing self-
corrosion hydrogen evolution. This allows for stable
discharge while improving the battery's
discharge voltage and anode efficiency, significantly extending the battery's lifespan. The Mg-Sr-In anode material of this invention has a simple preparation process, low cost, and is easy to promote and apply, making it suitable for high-power
electrical equipment.