Zobrazeno 1 - 10
of 182
pro vyhledávání: '"Rüdiger Kötz"'
Publikováno v:
CHIMIA, Vol 68, Iss 4 (2014)
The development of stable catalyst systems for application at the cathode side of polymer electrolyte fuel cells (PEFCs) requires the substitution of the state-of-the-art carbon supports with materials showing high corrosion resistance in a strongly
Externí odkaz:
https://doaj.org/article/f5e6175b42e3451581d85e6e969a8c11
Publikováno v:
Catalysis Today. 262:161-169
This work addresses the long-term stability issues of polymer electrolyte fuel cells (PEFC) based on a new oxide supported cathode catalyst generation using commercial Pt/IrO 2 –TiO 2 (Umicore ® ) as model cathode catalyst. First, the ionomer to o
Autor:
Emiliana Fabbri, Thomas J. Schmidt, Marios Garganourakis, Maarten Nachtegaal, Tobias Binninger, Olha Sereda, Andreas Menzel, Rüdiger Kötz, Alexandra Patru, Jun Han, Daniel F. Abbott
Publikováno v:
Journal of The Electrochemical Society
Journal of the Electrochemical Society, 163 (10)
Journal of the Electrochemical Society, 163 (10)
An electrochemical three-electrode flow-cell is presented for in situ small-angle X-ray scattering (SAXS) and X-ray absorption spectroscopy (XAS) experiments in transmission mode at synchrotron X-ray sources. The cell also allows for in situ XAS perf
The extraordinary stability and cycle life performance of today’s electrochemical double-layer capacitors (EDLCs) are generally ascribed to the fact that charge storage in activated carbon (AC) is based on pure double-layer charging. In contrast, F
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aee0ef7b81674356c8757620fc0d6c18
http://doc.rero.ch/record/317005/files/339_2005_Article_3403.pdf
http://doc.rero.ch/record/317005/files/339_2005_Article_3403.pdf
Autor:
Olaf Conrad, Emiliana Fabbri, Rhiyaad Mohamed, Xi Cheng, Thomas J. Schmidt, Pieter Levecque, Rüdiger Kötz
Publikováno v:
Journal of the Electrochemical Society
Journal of the Electrochemical Society, 162 (6)
Journal of the Electrochemical Society, 162 (6)
Single and double perovskite oxides have been reported to be amongst the most active electrocatalysts for the oxygen evolution reaction (OER) in alkaline electrolyte. Although a detailed study of the bulk electronic structure-activity relationship to
Publikováno v:
Journal of Power Sources. 266:475-480
Electrochemical double layer capacitors (EDLCs) are inherently high power devices when compared to rechargeable batteries. While capacitance and energy storage ability are mainly increased by optimizing the electrode active material or the electrolyt
Autor:
Thomas J. Schmidt, Matthew Worsdale, Denis Kramer, Rüdiger Kötz, Annett Rabis, Emiliana Fabbri
Publikováno v:
The Journal of Physical Chemistry C. 118:11292-11302
SnO2 thin films are studied experimentally and from first-principles as model supports for Pt nanoparticle catalysts in an acidic environment. SnO2 thin film supports are attractive model systems because composition, microstructure, and surface termi
Autor:
Thomas J. Schmidt, Pieter Levecque, Rhiyaad Mohamed, Olaf Conrad, Rüdiger Kötz, Emiliana Fabbri
Publikováno v:
ACS Catalysis. 4:1061-1070
Herein we report the electrochemical activity and selectivity toward the oxygen reduction reaction (ORR) for composite electrodes made of Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) perovskite oxide and Acetylene black (AB) carbon in alkaline media. The onset p
Publikováno v:
Electroctrochimica Acta
ELECTROCHIMICA ACTA
ELECTROCHIMICA ACTA
The electrochemical activation reaction observed for oxygen rich graphitized carbons is known to irreversibly modify the properties of the material. After activation such carbons show for example an enhanced ion storage capability. In case of partial
Publikováno v:
Carbon
The expansion of porous carbons used in electrochemical double layer capacitors during positive or negative charging has been investigated in several studies, however, the underlying mechanisms are not well understood yet. We therefore investigated d