Patent ID: 8557449

Claim:
A catalyst for an air cathode of an electrochemical system, comprising at least one of the following: cobalt phosphate, cobalt borate, cobalt borate phosphate, a metal salt of formula M x Co 3−x PO 4 where M is a metal or metals that can form alloys with Co, selected from Ni, Cu, Zn, Cr, W, Mo, Fe, Mn, Si, C, and x is a number from 0 to 3, a metal salt of M y Co 2−y B 2 O 4 , where M is a metal or metals that can form alloys with Co, selected from Ni, Cu, Zn, Cr, W, Mo, Fe, Mn, Si, C, and y is a number from 0 to 2, a metal salt of formula M z Co 3−z BPO 7 where M is a metal or metals that can form alloys with Co, selected from Ni,Cu, Zn, Cr, W, Mo, Fe, Mn, Si, C and z is a number from 0 to 3.