Patent ID: 8890399
Filing Date: 2014-11-18
Classification: H01T

Abstract:
1. A method of making an electrode material, the method comprising the steps of: (a) forming a ruthenium-based material into a bar that has a length and a first diameter, the ruthenium-based material having ruthenium (Ru) as the single largest constituent on a weight percentage (wt %) basis; (b) hot-forming the bar of the ruthenium-based material into an elongated wire that has a second diameter and a fibrous grain structure, the second diameter being smaller than the first diameter; and (c) intermittently annealing the ruthenium-based material during step (b) to maintain the fibrous grain structure as the ruthenium-based material undergoes diameter reduction from the first diameter of the bar to the second diameter of the elongated wire.