solar fuel by artificial photosynthesis: the light-driven...
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Solar fuel by artificial photosynthesis: The light-driven Production of hydrogen gas
from water.
Joost Reek, University of Amsterdam
http://www.biosolarcells.nl
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Global growth of PV market
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Tackling the challenges in Solar energy
Solar Energy In principle sufficient, but
- General electricity….. 1) Storage problem 2) 80% of energy use is in the form of fuels!!
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Ronge et al. Chem. Soc. Rev. 43(2014) 7963
Sunlight! Water!
H2 + O2!
Artificial Photosynthesis !
Can we make fuel from sunlight?
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Future applications W. Haije, H. Geerlings,
Environ. Sci. Technol. 2011, 45, 8609-8610.
Reverse water-gas shift reaction (RWGS): H2 + CO2 � CO + H2O ΔH0 = +41 kJ mol-1
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Future applications W. Haije, H. Geerlings,
Environ. Sci. Technol. 2011, 45, 8609-8610.
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Future applications: personalized energy
Nocera,
PNAS. 2009,.
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800 kg battery or fuel cell?
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Tackling the challenges in Solar energy
Solar Energy In principle sufficient, but
- General electricity….. 1) Storage problem 2) 80% of energy use is in the form of fuels!!
- Increase solar conversion efficiency - Direct solar to fuel - Fuel cell devices - Improve ease of fabrication - Use cheap abundant materials - Make durable devices
Goals
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UvA
Vu
AMOLF ECN
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Solar to fuel: Biosolar cell program:
Coordinators: ! (semi-) artificial: Systems design of
integrated photosynthetic artificial units
Joost Reek
Ernst Sudhölter
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Team: 16 research projects, 7 Universities Catalysts ! UvA Reek/Detz/v.d. Vlugt ! UL Bouman/Koper ! UL de Groot/Hetterscheid ! TUD B. Dam/Smith ! TUTwente Mul Devices ! TUD B. Dam/Smith ! UL Koper/de Groot ! TuTwente Gardeniers ! TuTwente Huskens ! TUE Janssen ! TuTwente Mul
Absorption and charge separation
! VU Orro/Lammertsma ! UvA Brouwer/Reek ! TUD Sudhölter ! UL de Groot Spectroscopy/theory ! VU Kennis/Frese ! UvA Brouwer ! UL de Groot ! VU Wijngaarden
TUE Haverkort
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Goal
The creation of efficient, robust and scalable energy convertors based on cheap and
abundant materials that can be employed on large scale and contribute to conversion and
storage of solar energy
Costs
Efficiency
Scalability
Durability
.
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Device designs: maturity vs. cost
J. R. McKone, N. S. Lewis, H. B. Gray, Chem. Mater. 2014, 26, 407−414
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Device designs: maturity vs. cost
J. R. McKone, N. S. Lewis, H. B. Gray, Chem. Mater. 2014, 26, 407−414
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Integrated PV/Electrolyser
e- H2 ½O2
S.Y. Reece, J. A. Hamel, K. Sung, T. D. Jarvi, A. J. Esswein, J. J. H. Pijpers, D. G. Nocera, Science, 2011,
334, 645.
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Combined device of gradient-doped W:BiVO4 and a-Si solar cell STH ~5 %
B. Dam, R. van de Krol,
Nature Commun. 2013, 4, 2195
! Steps to take:
! Replace Pt
! Improve photo-absorption
! Improve catalysis
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-1.0 -0.5 0.0 0.5 1.0 1.5 2.0 2.5
-5
0
Cur
rent
Den
sity
(mA
/cm
2 )
Bias (V)
TUE: "plastic cell" Triple junctions :
Jsc = 7.34 mA/cm2
Voc = 2.09 V
FF = 0.63
PCE = 9.6%
Glass
ITO
PEDOT:PSS
PCDTBT:[70]PCBM
ZnO
pH neutral PEDOT
PMDPP3T:[60]PCBM
ZnO
pH neutral PEDOT
PMDPP3T:[60]PCBM
LiF/Al
Janssen J. Am. Chem. Soc. 2013, 135, 5529–5532.
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TUE: "plastic cell" Triple junctions :
Weiwei Li & Alice Furlan
Glass
ITO
PEDOT:PSS
PCDTBT:[70]PCBM
ZnO
pH neutral PEDOT
PMDPP3T:[60]PCBM
ZnO
pH neutral PEDOT
PMDPP3T:[60]PCBM
LiF/Al
Vop = 1.56 V Jop = 3.98 mA/cm2
ηSTH = 3.98 x 1.23 = 4.90 %
Oxygen evolution catalyst: CoOx
Hydrogen evolution catalyst; NiMoZn
Target 15%
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V
H+$
H2$
H2O$
O2
CATH
ODE
$
ANODE$
PV: GaAs !!Oxygen evolution catalyst: Si:Fe2O3!!Hydrogen evolution catalyst: Pt!
Cathode : 4H+ + 4e� → 2H2 Eo = 0 V vs. RHE !Anode : 2H2O → 4H+ + 4e� + O2 Eo = +1.23 V vs. RHE!Total : 2H2O →2H2 + O2 Erxn
o = 1.23 V!
!
The Artificial Leaf
Smith TUD
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The Artificial Leaf
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The Artificial Leaf based on solar cells
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Bio-inpsired: molecular components
Ir, Ru, Fe, Cu Ni, Co, Fe,
Reek, Detz, Hetterscheid, orro
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Vision: Development of application together with industry. Lab-type 0-2 years demo 2-4 years pilot 4-6 years market…..
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personalized energy: Role of heating industry? solar to fuel fuel to power?