Related by context. Frequent words. (Click for all words.) 64 electrolyser 60 PEM fuel 59 thermoelectric materials 58 proton exchange 58 reciprocating engines 58 electrolyzer 58 membrane PEM fuel 57 ultra capacitors 57 battery chemistries 56 cell SOFC 56 membrane electrode assemblies 56 piezo electric 56 AuraGen 56 micro inverter 56 gaseous fuels 55 super capacitors 55 conventional internal combustion 55 purity silicon 55 hydrogen 54 Capstone MicroTurbine 54 microturbines 54 micro inverters 54 servomotors 54 spark ignition 54 nanoparticulate 54 metal hydride 54 Biobutanol 54 5kW 54 SOFCs 53 Nafion 53 condensing boilers 53 reactants 53 ultrapure water 53 VCSELs 53 renewable feedstocks 53 de ionized 52 electrochemically 52 microturbine 52 peroxides 52 lithium cobalt oxide 52 PV inverters 52 adsorbents 52 urea injection 52 sodium borohydride 52 Lithium Ion batteries 52 cerium oxide 52 #KW [001] 52 Micropelt 52 Thermoelectric 52 Dumesic 52 dc dc converters 52 ceria 52 SF6 52 R#a 52 biocatalysts 52 CIGS solar cells 51 nanoporous 51 hybrid powertrains 51 hydride 51 1kW 51 photonic devices 51 super alloys 51 Voller Energy 51 solar concentrators 51 photovoltaic arrays 51 conductive polymer 51 supercapacitors 51 Mobion ® 51 Direct Methanol Fuel Cell 51 solenoid valves 51 HFC #a 51 induction motors 51 SOFC 51 iron phosphate 51 SCR catalyst 51 levelized cost 51 nanosystems 51 Lithium ion 51 compression ignition 51 lithium ion polymer 51 Reverse osmosis 51 3kW 50 conductive polymers 50 PowerVerde 50 motors generators 50 microelectronic devices 50 lithium polymer batteries 50 reverse osmosis desalination 50 cathode materials 50 internal combustion engines 50 frequency converters 50 spintronic 50 lubricant additives 50 electrically driven 50 phosphors 50 porous silicon 50 stoichiometric 50 Mobion R 50 servomotor 50 brushless motor 50 dopant