Solar Hydrogen Update

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Solar Hydrogen Update 1 st December 2009

description

Solar Hydrogen Update. 1 st December 2009. Updates. Plasma deposition unit Failure due to faulty VGA card. Should be up for running by next week Separating system of carver’s reactor. Carver’s Reactor. Reactor setup. H 2. O 2. Reactor. Pump. Feed Tank. Carver’s Reactor. - PowerPoint PPT Presentation

Transcript of Solar Hydrogen Update

Page 1: Solar Hydrogen Update

Solar Hydrogen Update

1st December 2009

Page 2: Solar Hydrogen Update

Updates

- Plasma deposition unit- Failure due to faulty VGA card. Should be up for running by next week

- Separating system of carver’s reactor

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Carver’s ReactorReactor setup

H2 O2

Reactor

Pump

FeedTank

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Carver’s ReactorDesign of the T-Piece for separation

- Use of a normal T-piece- Poor liq-gas separation

Ideas:

Gas

Liq

From reactor From reactor

Gas

Liq

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Since last week….

• Effect of Sn-doping– Lower/higher doping concentrations

• Film thickness measurements

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-0.05

0.00

0.05

0.10

0.15

0.20

0.25

-0.60 -0.40 -0.20 0.00 0.20 0.40 0.60 0.80

Potential vs qre / Volts

AD

C o

/p

/ V

olt

Fe2O3: Photocurrent-voltage: Illumination @ 450 nm

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Fe2O3: Photocurrent spectra: film thickness

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

250 300 350 400 450 500 550 600 650 700 750

Wavelength / nm

No

rmal

ised

Ph

oto

curr

ent

/ ar

b u

nit

s

10 Layers 15 Layers 20 Layers

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0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

250 300 350 400 450 500 550 600 650 700 750

Wavelength / nm

No

rmal

ised

Ph

oto

curr

ent

/ ar

b u

nit

s

10 Layers-high Sn

10 Layers-Std Sn @ 0.5V

10 Layers-Std Sn-0.2V

Fe2O3: Photocurrent spectra: dopant concentration

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Carver Reactor Development: 1

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Carver Reactor Development: 2

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Electrochemical CO2 Reduction

• Target fuels– Methanol (Primary) (Mo, CuO + ZnO + Al2O3)

– Formate (Secondary) (Pb, In)

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Systems to be studied

• Nafion– 2D cathode

• Liquid aqueous• Liquid non-aqueous

– 3D cathode• Liquid aqueous• Liquid non-aqueous• Liquid/gas aqueous• Liquid/gas non-aqueous

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Systems to be studied (continued)

• High T proton conductors (V2O5·nH2O, K(HPO3H), CsH2PO4)

– 2D cathode• Pure CO2

• CO2 + steam

– 3D cathode• Pure CO2

• CO2 + steam

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Work in progress

• System design

• Studying the fabrication of high temperature proton conductors