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EPFL team develops low-cost water splitting cell with solar-to-hydrogen efficiency of 12.3%

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Michael Grätzel at EPFL (Ecole Polytechnique Fédérale de Lausanne) in Switzerland has developed a highly efficient and low-cost water-splitting cell combining an advanced perovskite tandem solar cell and a bi-functional Earth-abundant catalyst. conversion efficiency from solar energy to hydrogen, a record with earth-abundant materials.

Low Cost 278
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Molecular shuttle speeds up hydrogen production by the photocatalytic splitting of water

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water splitting. One approach is to utilize incoming solar radiation for the photocatalytic generation of molecular hydrogen (H 2 ) from water. Photocatalytic synthesis of hydrogen gas from water requires the transfer of electrons to the hydrogen, while the holes interact with the oxygen or are scavenged by other molecules.

Water 218
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USC team finds Li-Al nanoparticles produce hydrogen from water with high rate and yield; potential for industrial scaling

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Aluminum and water react exothermically to form aluminum hydroxide and hydrogen; this basic property has lured numerous researchers interested in generating hydrogen from the aluminum-water reaction for modern transportation systems for at least 35 years. Earlier post.) Credit: ACS, Shimamura et al. Click to enlarge.

Water 218
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Researchers develop free-standing nanowire mesh for direct solar water-splitting to produce H2; new design for “artificial leaf”

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The mesh with BiVO 4 nanowire photoanode for water oxidation and Rh-SrTiO 3 nanowire photocathode for water reduction produces hydrogen gas without an electron mediator. an “artificial leaf” to produce hydrogen—based on a nanowire mesh that lends itself to large-scale, low-cost production. Credit: ACS, Liu et al.

Water 270
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KU Leuven team creates solar panel that produces hydrogen from moisture in air

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Bioscience engineers at KU Leuven have created a solar panel that produces hydrogen gas from moisture in the air. If that electric power is used to split the water into hydrogen gas and oxygen, you lose a lot of energy. m² that converts 15% of the sunlight straight into hydrogen gas. That’s how you get results.

Solar 321
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RIKEN researchers develop bio-inspired catalyst that splits water at neutral pH

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Plants use photosynthesis to convert carbon dioxide and water into sugars and oxygen. The process starts in a cluster of manganese, calcium and oxygen atoms at the heart of a protein complex called photosystem II, which splits water to form oxygen gas, protons and electrons. —Yamaguchi et al.

Water 246
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Stanford team reports new low-cost, non-precious metal catalyst for water splitting with performance close to platinum

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Researchers at Stanford University, with colleagues at Oak Ridge National Laboratory and other institutions, have developed a nickel-based electrocatalyst for low-cost water-splitting for hydrogen production with performance close to that of much more expensive commercial platinum electrocatalysts. Catalysts Hydrogen Production'

Low Cost 273