Hydrogen Storage Alloys

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Hydrogen storage alloys comprising a) at least one electrochemically active main phase and b) at least one electrochemically active secondary phase; and/or comprising a) at least one main phase, b) a storage secondary phase comprising one or more rare earth elements and c) a catalytic secondary phase, where the abundance of the storage secondary phase is >0.5 wt % and the abundance of the catalytic secondary phase is from about 0.3 to about 15 wt %, based on the alloy; exhibit improved electrochemical properties, for example improved low temperature electrochemical properties.