ABSTRACT
Electrolysis.Process............................................................................ 74 3.6. Materials.Challenges..................................................................................... 75 3.7. Summary....................................................................................................... 76 Acknowledgments.................................................................................................... 78 References................................................................................................................. 78
Emphasis.on.energy.security.issues.has.brought.much.needed.attention.to.economic. production.of.hydrogen.as.the.secondary.energy.carrier.for.nonelectrical.markets.. The.recent.focus.on.hydrogen.comes.from.its.environmentally.benign.aspect..However,.much.of.the.hydrogen.currently.produced.is.used.near.the.production.facility. for.chemical.synthesis,.such.as.ammonia.and.methanol.production,.and.for.upgrading.as.well.as.desulfurization.of.crude.oil..While.steam.reforming.of.methane.is.the. current.method.of.production.of.hydrogen,.the.fossil.fuel.feed.consumes.nonrenewable. fuel. while. emitting. greenhouse. gases.. Thus,. in. the. long. run,. efficient,. environmentally.friendly,.and.economic.means.of.hydrogen.production.using.renewable. energy.need.to.be.developed..Additionally,.when.excess.energy.production.capacity. exists,.for.example,.during.off-peak.hours,.efficient.generation.of.hydrogen.may.be. an.option.to.make.an.effective.use.of.the.investment.in.power.generation.infrastructure.. Steam. electrolysis,. particularly. using. high-temperature. ceramic. membrane. processes,.provides.an.attractive.option.for.efficient.generation.of.ultra.high.purity. (UHP).hydrogen.
