TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The catalyst is palladium on silicon dioxide. The catalyst is 5% palladium relative to silicon dioxide. The catalyst comprises palladium on carbon and/or platinum on carbon.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: In the power generator, substantially all of the XH i.e. dehydrogenated forms X and hydrogen.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: The heating step of the dehydrogenation reactor to a first temperature and the heating step of the fuel cell to a second temperature is by solar heat, waste heat, or geothermal heat. The first temperature is 140-300 degrees C (preferably 180-250 degrees C) and the first temperature is at least 50 degrees higher than the second temperature. The second temperature is 70-160 degrees C (preferably 80-105 degrees C) and the second temperature is at least 50 degrees C lower than the first temperature. Preferred Components: The XH comprises: a secondary benzylic alcohol; substituted hydroxyl compounds of formula (R1-CH(OH)-CH(-(R4)(R2))-R3); and 1-phenyl-1-ethanol, 1-phenyl-1-propanol, 1-(4-methylphenyl)-ethanol, and/or 1-phenyl-2-methyl-1-propanol. The XH comprises: 1-phenyl-1-propanol, which dehydrogenates to form propiophenone and hydrogen; or 1-phenyl-1-ethanol, which dehydrogenates to form acetophenone and hydrogen.R2-R4 = H, aliphatic, aryl, OH, OR5, Si, NH, NHR5, NR5R6, B or may be substituted but do not include moieties that poison catalysts or that are reactive in the presence of catalyst or H2; andR5, R6 = H, aliphatic and/or aryl; orR2R3R4+C, R5R6+N = a cyclic moiety; andR1 = optionally substituted aryl including heteroaryl comprising N, O and/or S, preferably phenyl, pyridyl, pyrimidinyl, pyrazinyl, triazinyl, furyl, thiophenyl, imidazolyl, oxazolyl, pyrrolyl, naphthyl, quinolinyl, isoquinolyl, indenyl, indolyl or benzothiophenyl.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The polymer electrolyte membrane comprises sulfonated polybenzimidazole having a structure of formula (I).n = a very large number;terminal monomer = mono-linked carboxylic or diamino monomers; andsulfonated aryl spacers = phenyl group of formula (a)-(d).