A nickel positive electrode including an active material mixture mainly composed of a nickel oxide and an electrically conductive support, a metal and/or an oxide thereof including elements effective for increasing oxygen overvoltage, preferably at least one element selected from Ca, Ti, Nb, Cr, Y and...http://www.google.com/patents/US6338917?utm_source=gb-gplus-sharePatent US6338917 - Alkaline storage battery
