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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Zhao, Chuan
in Cooperation with on an Cooperation-Score of 37%
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Publications (3/3 displayed)
- 2023Monometallic interphasic synergy via nano-hetero-interfacing for hydrogen evolution in alkaline electrolytescitations
- 2021Direct Solar Hydrogen Generation at 20% Efficiency Using Low-Cost Materialscitations
- 2011Controlled potential electrodeposition of a microcrystalline thin film of the charge transfer material tetrathiafulvalene-polyoxometalate of approximate composition (TTF)(5.3)(Bu4N)(0.7)[P2W18O62]center dot 3H(2)Ocitations
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article
Direct Solar Hydrogen Generation at 20% Efficiency Using Low-Cost Materials
Abstract
<p>While direct solar-driven water splitting has been investigated as an important technology for low-cost hydrogen production, the systems demonstrated so far either required expensive materials or presented low solar-to-hydrogen (STH) conversion efficiencies, both of which increase the levelized cost of hydrogen (LCOH). Here, a low-cost material system is demonstrated, consisting of perovskite/Si tandem semiconductors and Ni-based earth-abundant catalysts for direct solar hydrogen generation. NiMo-based hydrogen evolution reaction catalyst is reported, which has innovative “flower-stem” morphology with enhanced reaction sites and presents very low reaction overpotential of 6 mV at 10 mA cm<sup>−2</sup>. A perovskite solar cell with an unprecedented high open circuit voltage (V<sub>oc</sub>) of 1.271 V is developed, which is enabled by an optimized perovskite composition and an improved surface passivation. When the NiMo hydrogen evolution catalyst is wire-connected with an optimally designed NiFe-based oxygen evolution catalyst and a high-performance perovskite-Si tandem cell, the resulting integrated water splitting cell achieves a record 20% STH efficiency. Detailed analysis of the integrated system reveals that STH efficiencies of 25% can be achieved with realistic improvements in the perovskite cell and an LCOH below ≈$3 kg<sup>−1</sup> is feasible.</p>