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Swiss team develops effective and low-cost solar water-splitting device; 14.2% solar-to-hydrogen efficiency

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Recently, c-Si modules have been implemented in solar-hydrogen devices, demonstrating SHE [solar-to-hydrogen efficiency] of 9.7%. As the V OC of the presented c-Si cells is only ∼600 mV, four cells need to be connected in series to achieve stable water splitting performance. Schüttauf et al. Schüttauf et al.

Solar 150
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Penn State, FSU team develops low-cost, efficient layered heterostructure catalyst for water-splitting

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A team of scientists from Penn State and Florida State University have developed a lower cost and industrially scalable catalyst consisting of synthesized stacked graphene and W x Mo 1–x S 2 alloy phases that produces pure hydrogen through a low-energy water-splitting process. —Lei et al.

Low Cost 170
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KIST team develops membrane reactor system to produce pure H2 from ammonia with high productivity

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Steam is adopted as a sweep gas, presenting efficient H 2 recovery (>91%) while replacing conventionally utilized noble carrier gases that require additional gas separation processes. Hydrogen gas, however, cannot be transported in large amounts due to the limitations in the amount that can be stored per unit volume.

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US/China team develops robust, stable Ni/Fe OER catalyst for water-splitting at low overpotentials

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A team from the University of Houston and Hunan Normal University in China has developed an active and durable oxygen evolution reaction (OER) catalyst for water splitting that meets commercial crtieria for current densities at low overpotentials. to deliver 200 mA cm -2 , unsatisfactory for the commercial requirements of 1.8-2.4

Water 170
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Researchers produce hydrogen from water and charcoal mix at room temperature using laser pulses

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Researchers at Wakayama University in Japan have produced a mixture of hydrogen and carbon monoxide gas by irradiating a mixture of carbon powder and distilled water with intense nanosecond laser pulses at room temperature. Electrodes or any other photocatalysts were not used to produce the hydrogen. mL volume of water.

Water 230
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BNEF report finds hydrogen promising decarbonization pathway, but carbon prices and emissions policies required

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The falling cost of making hydrogen from wind and solar power offers a promising route to cutting emissions in some of the most fossil-fuel-dependent sectors of the economy, such as steel, heavy-duty vehicles, shipping and cement, according to a new report from BloombergNEF (BNEF). Summary of the economics of a hydrogen economy.

Hydrogen 221
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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.

Water 270