The negative electrode active material for an electric device of the present invention has an alloy containing Si in a range from 12% by mass or more to less than 100% by mass, Sn in a range from more than 0% by mass to 45% by mass or less, Al in a range f...

[Objective] An objective of the present invention is to provide a technique which can improve resistance to spark ablation of an electrode tip whose predominant component is Pd and restrains occurrence of separation and cracking of the electrode tip. [Mean...