| abstract |
A rechargeable battery having an anode comprising a powdery composite material said powdery composite material comprising a plurality of powdery composites having a structure comprising a core whose surface is covered by a coat layer, said core comprising an alloy particle of an alloy capable of reversibly storing and releasing hydrogen as a main component, said alloy containing at least one kind of a metal element selected from the group consisting of Zr, Ti and V as a main constituent element, and said coat layer comprising a hydrous oxide (including a hydroxide) of a metal element having an affinity with oxygen which is greater than that of any of said metal elements as the main constituent element of said alloy. |