Download PEMFC = Proton Exchange Membrane Fuel Cell Uses Hydrogen gas

v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
Largeproportionofexpensesduetopollutioncausedby
conventionalroadtransportation
Gasolineanddiesel-poweredautomobiles
Dieselbuses
Short-termsolution:Increaseuseofpublictransport
Lessvehiclesonroad=lesspollution
Busesarethebestoption
v
Cheap,reliable,safe,fewerinnumber
Theproblemwithconventionalbuses
Mostlyburndiesel
Dieselfuelissignificantlymoreharmfultotheenvironment
v
Particulatematterreleased
Needacleanerenergysource
PEMFUELCELLS
Likebatteries,butlesstoxic
Usevariouschemicalreactionstogenerateelectricity
Mostimportantly,they’reclean
Whynotfuelcellcars?
Toomanyontheroad
Leviathanofafinancialundertaking
Carsaren’tuniform:toomuchvariationindesign
v PEMFC=ProtonExchangeMembraneFuelCell
v
v UsesHydrogengas(H2)andOxygenGas(O2)for
fuel
v Releaseswatervaporandexcesshydrogen
v Connectedtoexternalcircuitwhichgeneratesa v
current
v Useswater-basedacidicpolymersasan
electrolyte
MEA(MembraneElectrodeAssembly)CELLSTACK
v Multiplecellscombinedtogetherinanarray
v Actslikeagiantbattery
v Cellscappedoffbybipolarendplates
Hypotheticalenginesystem
v Connectedintandemwithabatterypack
v DC/DCconvertorforcharging
v
13ActiveFuelCellBus(FCEB)fleetsinthe
UnitedStates,manymoreInternationally
v
DatagatheredbytheNationalRenewable
EnergyLaboratory(US)
v
YearlyupdateofFCEBstatistics
v
v
v
v
v
v
v
v
Fledglingtechnologywith
greatpotential
Canreduceemissions
entirely
Encouragespublic
transit
Expensive,butitpaysitself
overmanytimes
Ifpopularized,reduces
amountofcarson
road
Billionssaveddueto
lackofhealthissues
frompollution
Hasreal-world
applications,not
purelyexperimental
v
v
v
v
v
v
v
ASOF2016:
FCEB’sareonthewaytoapproachingtheir
ultimatetarget
Increasingfueleconomy
PotentialDrawbacks
Highcost
Useofraremetalsincells(platinum)
Expensivetotransition