“…Lee et al (2002) reported arrays of hydrogen-air PEM fuel cells formed on silicon substrates, wherein a reconfigurable cathode electrode enabled scaling of either current or voltage. An additional configuration has been reported to form the porous silicon or silicon dioxide catalyst/electrode support on the same side of the silicon wafer Meyers and Maynard (2002) 63 Hydrogen PEM, 258C Modroukas et al (2005) 130 Hydrogen PEM, 388C Yeom et al (2005) 35 Hydrogen PEM, 208C Yu et al (2003) 195 Hydrogen PEM, 258C Kelley et al (2002) 90 0.5 M CH 3 OH, DMFC, 708C Motokawa et al (2004) 0.78 2 M CH 3 OH, DMFC, 258C Yen et al (2003) 40 4 M CH 3 OH, DMFC, 258C Wosniak (2004) 0.3 6 M CH 3 OH, DMFC, 258C…”