Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Björn, Anke"'
Autor:
Elisabeth Hornberger, Thomas Merzdorf, Henrike Schmies, Jessica Hübner, Malte Klingenhof, Ulrich Gernert, Matthias Kroschel, Björn Anke, Martin Lerch, Johannes Schmidt, Arne Thomas, Raphaël Chattot, Isaac Martens, Jakub Drnec, Peter Strasser
Publikováno v:
ACS applied materialsinterfaces. 14(16)
Cathode catalyst layers of proton exchange membrane fuel cells (PEMFCs) typically consist of carbon-supported platinum catalysts with varying weight ratios of proton-conducting ionomers. N-Doping of carbon support materials is proposed to enhance the
Autor:
Anna Fischer, Olga Kasian, Dennis Wiedemann, Anna C. Ulpe, Martin Rohloff, Siyuan Zhang, Björn Anke, Thomas Bredow, Martin Lerch, Christina Scheu
Publikováno v:
Zeitschrift für Physikalische Chemie
BiVO4 is one of the most investigated and most promising metal oxide based photoanode materials for photoelectrochemical (PEC) water oxidation. Although it has several advantages (suitable band gap around 2.4 eV, suitable valence-band position for wa
Autor:
Martin Lerch, Alin Orfanidi, Henrike Schmies, Hong Nhan Nong, Björn Anke, Manuel Gliech, Sebastian Ott, Jessica Hübner, Ulrich Gernert, Peter Strasser
Publikováno v:
Nature Materials. 19:77-85
The reduction of Pt content in the cathode for proton exchange membrane fuel cells is highly desirable to lower their costs. However, lowering the Pt loading of the cathodic electrode leads to high voltage losses. These voltage losses are known to or
Autor:
Christina Scheu, Martin Lerch, Olga Kasian, Anna Fischer, Martin Rohloff, Siyuan Zhang, Björn Anke
Publikováno v:
ACS Applied Materials & Interfaces. 11:16430-16442
Anion substitution is an emerging strategy to enhance the photoelectrochemical performance of metal oxide photoelectrodes. In the present work, we investigate the effect of fluorine incorporation o...
Autor:
Carsten Cremers, Henrike Schmies, Tilman Jurzinsky, Stefanie Kühl, Peter Strasser, Martin Lerch, Jakub Drnec, Björn Anke, Hong Nhan Nong, Fabio Dionigi, Elisabeth Hornberger
Publikováno v:
Chemistry of Materials. 30:7287-7295
Nitrogen-enriched porous carbons have been discussed as supports for Pt nanoparticle catalysts deployed at cathode layers of polymer electrolyte membrane fuel cells (PEMFC). Here, we present an analysis of the chemical process of carbon surface modif
Autor:
Björn Anke, Christian Lorent, Theresa Block, Oliver Janka, Martin Lerch, Rainer Pöttgen, Sophie Hund
Publikováno v:
Zeitschrift für anorganische und allgemeine Chemie. 643:1824-1830
Pyrochlore-type Eu2Ta2(O,N)7+δ phases were prepared by reaction of ammonia with an amorphous europium tantalum oxide precursor. 151Eu Mossbauer and EPR spectroscopy as well as magnetic susceptibility measurements point to the presence of exclusively
Publikováno v:
Journal of Solid State Chemistry. 246:75-80
Yellow LaBa2Ta5O13N2 was successfully synthesized as phase-pure material crystallizing isostructurally to previously reported Ba3Ta5O14N and mixed-valence Ba3TaV4TaIVO15. The electronic structure of LaBa2Ta5O13N2 was studied theoretically with the ra
Autor:
Christina Scheu, Martin Rohloff, Siyuan Zhang, Martin Lerch, Björn Anke, Ulrich Gernert, Anna Fischer
Publikováno v:
Sustainable Energy & Fuels. 1:1830-1846
The n-type semiconductor bismuth vanadate (BiVO4) is one of the most promising ternary oxide materials for visible light-induced water oxidation, offering a theoretical solar-to-hydrogen efficiency of 9.1%. However, several factors strongly limit its
Publikováno v:
Solid State Sciences
Fluorine-containing bismuth vanadate (F:BiVO4) powder was synthesized using a new, clean, and simple solid-vapor reaction. Incorporation of fluorine mainly leads to the formation of cation vacancies. Electrodes were fabricated from the pre-synthesize
Autor:
Martin, Rohloff, Björn, Anke, Olga, Kasian, Siyuan, Zhang, Martin, Lerch, Christina, Scheu, Anna, Fischer
Publikováno v:
ACS applied materialsinterfaces. 11(18)
Anion substitution is an emerging strategy to enhance the photoelectrochemical performance of metal oxide photoelectrodes. In the present work, we investigate the effect of fluorine incorporation on the photoelectrochemical water oxidation performanc