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Showing 1–12 of 12 results
Advanced filters: Author: Avner Rothschild Clear advanced filters

  • Solar water splitting is promising for hydrogen production and solar energy storage, but for large-scale utilization cost must be reduced. A membrane-free approach in separate oxygen and hydrogen cells brings water splitting closer to applications.

    • Avigail Landman
    • Hen Dotan
    • Avner Rothschild
    Research
    Nature Materials
    Volume: 16, P: 646-651

  • Photoelectrochemical water splitting uses solar power to decompose water to hydrogen and oxygen. Here, the authors integrate thylakoid membranes extracted from spinach into a bio-photo-electro-chemical cell capable of overall water splitting without the need for any sacrificial reagents.

    • Roy I. Pinhassi
    • Dan Kallmann
    • Avner Rothschild
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-10

  • Conventionally, the two half reactions involved in water electrolysis occur simultaneously, presenting materials and process challenges. Here, the authors decouple these to split water efficiently in two steps: electrochemical hydrogen evolution, followed by spontaneous oxygen evolution at elevated temperature.

    • Hen Dotan
    • Avigail Landman
    • Gideon S. Grader
    Research
    Nature Energy
    Volume: 4, P: 786-795

  • Hydrogen produced by water splitting using renewable electricity is key to achieve net-zero carbon emissions. Decoupling hydrogen and oxygen evolution reactions during electrolysis is attractive but efficiency and operational challenges remain. A process producing hydrogen and oxygen in separate cells and supporting continuous operation in a membraneless system is now proposed.

    • Ilya Slobodkin
    • Elena Davydova
    • Avner Rothschild
    ResearchOpen Access
    Nature Materials
    Volume: 23, P: 398-405

  • Although the photogeneration yield spectrum is a key property for photoabsorbers in photovoltaic and photoelectrochemical cells, its characterization remains challenging. An empirical method to extract this parameter through quantum efficiency measurements of ultrathin films is proposed.

    • Daniel A. Grave
    • David S. Ellis
    • Avner Rothschild
    Research
    Nature Materials
    Volume: 20, P: 833-840

  • Biologically ### produced electrical currents and hydrogen are new energy sources. Here, the authors find that low presser microfluidizer treatment produced cyanobacterium that can utilize electrons from respiratory and photosynthesis to promote current and hydrogen generation, without the addition of exogenous electron mediators.

    • Gadiel Saper
    • Dan Kallmann
    • Noam Adir
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-9

  • Assessing the effect of nanometre-scale structure on charge transport across micrometre-scale distances remains a fundamental challenge for many energy-conversion technologies. By correlating the structure and the charge transport with nanometre resolution across micrometre-scale distances, nanoparticle aggregates responsible for the high photoelectrochemical water-splitting activity of α-Fe2O3 electrodes are identified.

    • Scott C. Warren
    • Kislon Voïtchovsky
    • Michael Grätzel
    Research
    Nature Materials
    Volume: 12, P: 842-849

  • Semiconductor photoelectrodes for solar hydrogen production by water photoelectrolysis require stable and abundant visible-light absorbers such as iron oxide. Although this material suffers from poor transport properties for efficient charge-carrier generation and collection, these drawbacks can now be addressed by using resonant light trapping in ultrathin films designed as optical cavities.

    • Hen Dotan
    • Ofer Kfir
    • Avner Rothschild
    Research
    Nature Materials
    Volume: 12, P: 158-164

  • Understanding fundamental processes that occur using solar-to-fuel conversion materials is crucial for constructing effective renewable energy collection. Here, authors find the hydrogen peroxide light-driven hole-scavenging mechanism over haematite to proceed with two active sites rather than one

    • Yotam Y. Avital
    • Hen Dotan
    • Arik Yochelis
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-10

  • Fabrication of superconducting 3D nanoarchitectures, using standard nanofabrication methods, is challenging. Here, the authors demonstrate the fabrication of a nanostructured 3D superconducting array of Josephson junctions, exploiting self-assembled DNA origami lattices as a template.

    • Lior Shani
    • Aaron N. Michelson
    • Oleg Gang
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-7

  • Separating the hydrogen and oxygen evolution reactions in water electrolysis in time and/or space can make hydrogen production safer. This Review discusses the benefits and drawbacks of different redox mediator strategies, a membraneless electrolyser architecture and the challenges of scaling.

    • Guilin Ruan
    • Fiona Todman
    • Avner Rothschild
    Reviews
    Nature Reviews Clean Technology
    Volume: 1, P: 380-395