An electrochemical cell is provided that includes a structurally and compositionally disordered electrochemically active alloy material as an anode active material with unexpected capacity against a nickel hydroxide based cathode active material. The disordered metal hydroxide alloy includes three or more transition metal elements and is formed in such a way so as to produce the necessary disorder in the overall system. When an anode active material includes nickel as a predominant, the resulting cells represent the first demonstration of a functional Ni/Ni cell.
STATEMENT OF GOVERNMENT SPONSORSHIP
 This invention was made with government support under contract no. DE-AR00003886, awarded by Advanced Research Projects Agency--Energy--U.S. Department of Energy. The government has certain rights in the invention.