CATALYST SUPPORT MATERIALS FOR FUEL CELLS

A catalyst support material for a proton exchange membrane fuel cell (PEMFC). The catalyst support material includes a metal material of an at least partially oxidized form of TiNbOreactive with HO, HF and/or SOto form reaction products in which the metal material of the at least partially oxidized form of TiNbOaccounts for a stable molar percentage of the reaction products.