Effects of Si on high-temperature performance of AB5-type alloy are firstly studied.
High-Si alloy shows better thermodynamic stability for high-temperature delivery.
Si profitably affects the high-temperature dischargeability, recoverability and cycling stability.
Si-containing alloys show excellent high-rate dischargeability and peak power at 60 °C.
Si promotes anti-corrosion ability and surface catalytic ability at higher temperature.