The Experts below are selected from a list of 47448 Experts worldwide ranked by ideXlab platform

Adrian Ruff - One of the best experts on this subject based on the ideXlab platform.

  • a gas breathing hydrogen air biofuel cell comprising a redox polymer hydrogenase based bioanode
    Nature Communications, 2018
    Co-Authors: Julian Szczesny, Wolfgang Schuhmann, Felipe Conzuelo, Sonia Zacarias, Inês A. C. Pereira, Wolfgang Lubitz, Nicolas Plumeré, Nikola Markovic, Adrian Ruff
    Abstract:

    Hydrogen is one of the most promising alternatives for fossil fuels. However, the power output of hydrogen/oxygen fuel cells is often restricted by mass transport limitations of the substrate. Here, we present a dual-gas breathing H2/air biofuel cell that overcomes these limitations. The cell is equipped with a hydrogen-oxidizing redox polymer/hydrogenase gas-breathing bioanode and an oxygen-reducing bilirubin oxidase gas-breathing biocathode (operated in a direct electron transfer regime). The bioanode consists of a two Layer system with a redox polymer-based Adhesion Layer and an active, redox polymer/hydrogenase top Layer. The redox polymers protect the biocatalyst from high potentials and oxygen damage. The bioanodes show remarkable current densities of up to 8 mA cm-2. A maximum power density of 3.6 mW cm-2 at 0.7 V and an open circuit voltage of up to 1.13 V were achieved in biofuel cell tests, representing outstanding values for a device that is based on a redox polymer-based hydrogenase bioanode.

Julian Szczesny - One of the best experts on this subject based on the ideXlab platform.

  • a gas breathing hydrogen air biofuel cell comprising a redox polymer hydrogenase based bioanode
    Nature Communications, 2018
    Co-Authors: Julian Szczesny, Wolfgang Schuhmann, Felipe Conzuelo, Sonia Zacarias, Inês A. C. Pereira, Wolfgang Lubitz, Nicolas Plumeré, Nikola Markovic, Adrian Ruff
    Abstract:

    Hydrogen is one of the most promising alternatives for fossil fuels. However, the power output of hydrogen/oxygen fuel cells is often restricted by mass transport limitations of the substrate. Here, we present a dual-gas breathing H2/air biofuel cell that overcomes these limitations. The cell is equipped with a hydrogen-oxidizing redox polymer/hydrogenase gas-breathing bioanode and an oxygen-reducing bilirubin oxidase gas-breathing biocathode (operated in a direct electron transfer regime). The bioanode consists of a two Layer system with a redox polymer-based Adhesion Layer and an active, redox polymer/hydrogenase top Layer. The redox polymers protect the biocatalyst from high potentials and oxygen damage. The bioanodes show remarkable current densities of up to 8 mA cm-2. A maximum power density of 3.6 mW cm-2 at 0.7 V and an open circuit voltage of up to 1.13 V were achieved in biofuel cell tests, representing outstanding values for a device that is based on a redox polymer-based hydrogenase bioanode.

Stefano Cabrini - One of the best experts on this subject based on the ideXlab platform.

  • metallic Adhesion Layer induced plasmon damping and molecular linker as a nondamping alternative
    ACS Nano, 2012
    Co-Authors: Terefe G Habteyes, Scott Dhuey, Erin Wood, Daniel J Gargas, Stefano Cabrini
    Abstract:

    Drastic chemical interface plasmon damping is induced by the ultrathin (∼2 nm) titanium (Ti) Adhesion Layer; alternatively, molecular Adhesion is implemented for lithographic fabrication of plasmonic nanostructures without significant distortion of the plasmonic characteristics. As determined from the homogeneous linewidth of the resonance scattering spectrum of individual gold nanorods, an ultrathin Ti Layer reduces the plasmon dephasing time significantly, and it reduces the plasmon scattering amplitude drastically. The increased damping rate and decreased plasmon amplitude are due to the dissipative dielectric function of Ti and the chemical interface plasmon damping where the conduction electrons are transferred across the metal–metal interface. In addition, a pronounced red shift due to the Ti Adhesion Layer, more than predicted using electromagnetic simulation, suggests the prevalence of interfacial reactions. By extending the experiment to conductively coupled ring-rod nanostructures, it is shown t...

Nikola Markovic - One of the best experts on this subject based on the ideXlab platform.

  • a gas breathing hydrogen air biofuel cell comprising a redox polymer hydrogenase based bioanode
    Nature Communications, 2018
    Co-Authors: Julian Szczesny, Wolfgang Schuhmann, Felipe Conzuelo, Sonia Zacarias, Inês A. C. Pereira, Wolfgang Lubitz, Nicolas Plumeré, Nikola Markovic, Adrian Ruff
    Abstract:

    Hydrogen is one of the most promising alternatives for fossil fuels. However, the power output of hydrogen/oxygen fuel cells is often restricted by mass transport limitations of the substrate. Here, we present a dual-gas breathing H2/air biofuel cell that overcomes these limitations. The cell is equipped with a hydrogen-oxidizing redox polymer/hydrogenase gas-breathing bioanode and an oxygen-reducing bilirubin oxidase gas-breathing biocathode (operated in a direct electron transfer regime). The bioanode consists of a two Layer system with a redox polymer-based Adhesion Layer and an active, redox polymer/hydrogenase top Layer. The redox polymers protect the biocatalyst from high potentials and oxygen damage. The bioanodes show remarkable current densities of up to 8 mA cm-2. A maximum power density of 3.6 mW cm-2 at 0.7 V and an open circuit voltage of up to 1.13 V were achieved in biofuel cell tests, representing outstanding values for a device that is based on a redox polymer-based hydrogenase bioanode.

Nicolas Plumeré - One of the best experts on this subject based on the ideXlab platform.

  • a gas breathing hydrogen air biofuel cell comprising a redox polymer hydrogenase based bioanode
    Nature Communications, 2018
    Co-Authors: Julian Szczesny, Wolfgang Schuhmann, Felipe Conzuelo, Sonia Zacarias, Inês A. C. Pereira, Wolfgang Lubitz, Nicolas Plumeré, Nikola Markovic, Adrian Ruff
    Abstract:

    Hydrogen is one of the most promising alternatives for fossil fuels. However, the power output of hydrogen/oxygen fuel cells is often restricted by mass transport limitations of the substrate. Here, we present a dual-gas breathing H2/air biofuel cell that overcomes these limitations. The cell is equipped with a hydrogen-oxidizing redox polymer/hydrogenase gas-breathing bioanode and an oxygen-reducing bilirubin oxidase gas-breathing biocathode (operated in a direct electron transfer regime). The bioanode consists of a two Layer system with a redox polymer-based Adhesion Layer and an active, redox polymer/hydrogenase top Layer. The redox polymers protect the biocatalyst from high potentials and oxygen damage. The bioanodes show remarkable current densities of up to 8 mA cm-2. A maximum power density of 3.6 mW cm-2 at 0.7 V and an open circuit voltage of up to 1.13 V were achieved in biofuel cell tests, representing outstanding values for a device that is based on a redox polymer-based hydrogenase bioanode.