The anode comprised a NiFeOx layer that was electrodeposited to incorporate PTFE particulates, onto a fine Ni mesh anode as described by Hodges et al.; 10 this procedure was based on previous work by Benedetti and co-workers. The anode is designated here as 'NiFeOx/PTFE/Ni mesh'. The anode Ni mesh electrode was spot welded to its perforated Ni bipolar plate as previously described. The Ni bipolar plate was maintained in direct electrical contact with a gas-tight anode by screwing in a compression bolt, as shown in Figure . After assembly of the cell, a torque of 25 N cm was applied to the compression bolt to compress the Ni bipolar plate and attached welded anode against the PES separator.