Christopher Carver Dr Klaus Hellgardt. Benefits Fossil fuel reliance Green house gases Abundant resources Durable & low maintenance Energy security.

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Presentation transcript:

Christopher Carver Dr Klaus Hellgardt

Benefits Fossil fuel reliance Green house gases Abundant resources Durable & low maintenance Energy security Challenges InfrastructureStoragePerception

240mm 210mm 70mm 100mm

1.23 eV 0.6 eV 0.4 eV 0.1 eV Theoretical water decomposition energy E g = 2.3 eV Theoretical Overpotential Recombination

 Design flexible test-bed reactor -10 x 10cm photoanode -Photon absorption -Quantum efficiency -High mass transfer rate coefficients -Separate hydrogen and oxygen  Hydrogen production experiments -Semiconductor material -Electrode configuration

Good absorption Stable in alkali Recombination Stable in acid/alkali UV absorption only Good efficiency Stable in acid Fe 2 O 3 TiO 2 WO 3 titaniumPVDF

quartz

Butler-Volmer equation Current density (A/m 2 ) Overpotential (V) Kinetic control Transport control Increasing mass transport rate

PHOTOANODE quartz window membrane cathode electrolyte

Set Up Reactor Electrical connections Hydrogen extraction system Evaluate reactor design Experiments Semiconductors / electrolyte Electrode configurationMultiple electrodesTemperature Analyse Results Quantify H2 productionOptimise reactor design Deliver report

QUESTIONS?

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