ABSTRACT
Alternatives to batteries as the portable energy storage device for electric andhybridelectricvehiclesarethefuelcells,ultracapacitors,compressed airtanks,and¨ywheels.Manyoftheseenergystoragedevicesareequally usefulforstationarypowergeneration.Thealternativesaretobeevaluatedbasedonthetechnologicalchallenges,energyconversionef‹ciencies, and fuel sources. Fuel cell is powered by hydrogen that has to be derived fromprimaryenergysources.Electricityproducedbythefuelcellusing hydrogenasthefuelpropelstheelectricpowertrainofafuelcellelectric vehicle.Hydrogenfueldeliverymethodneedstobeinplaceinadditionto thedevelopmentoffuelcellelectricvehicles.Onepossibleinfrastructureis to establish hydrogen-‹lling stations where hydrogen will be produced and storedintanksusingelectricitysuppliedthroughthetransmissiongrid. Thealternativetothisistoproducehydrogenonboardusingthereformer technology.
