NOVELTY - An electrochemical fuel cell membrane electrode assembly comprises an anode, cathode, an ionomer membrane disposed between the anode and cathode, and a catalytically active component disposed within the ionomer membrane, where the catalytically active component comprises particles of cobalt cations and boron stabilized silicon oxide.    USE - As electrochemical fuel cell membrane electrode assembly, for an electrochemical fuel cell, where the fuel is hydrogen, methanol, ethanol, formaldehyde, or formic acid (claimed).    ADVANTAGE - The electrochemical fuel cell membrane electrode assembly reduces or prevents degradation of a proton exchange membrane or membrane electrode assembly due to their interaction with hydrogen peroxide radicals, thus sustaining performance while remaining stable and viable for longer periods of time, as a result, fuel cell costs can be reduced. The catalytically active components can be incorporated into a proton exchange membrane or membrane electrode assembly without the need for subsequent treatment steps such as chemical reduction or hydrolysis treatment of a precursor, which is the case with many known catalytically active components.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) process for increasing the hydrogen peroxide radical resistance in an electrochemical fuel cell membrane electrode assembly involving: introducing a catalytically active component within the ionomer membrane, where catalytically active component comprises cobalt cations and boron stabilized silicon oxide; and    (2) operating an electrochemical fuel cell membrane electrode assembly so as to increase resistance to peroxide radical attack, involving: providing an ionomer membrane comprised of an ion-exchange polymer, where the ionomer membrane has opposite first and second sides, forming an anode electrode adjacent to the first side of the ionomer membrane, forming a cathode electrode adjacent to the second side of the ionomer membrane, introducing a catalytically active component within the ionomer membrane, where the catalytically active component comprises particles of cobalt cations and boron stabilized silicon oxide, forming an electric circuit between the anode and cathode electrodes, and providing a fuel to the anode electrode and oxygen to the cathode electrode so as to generate an electric current in electric circuit.    DESCRIPTION OF DRAWING(S) - The figure shows a chart of comparative fluoride emission data for several different membrane samples.