| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Bjerrum, Niels Janniksen
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (25/25 displayed)
- 2022Pressurized solid phosphate electrolyzer for medium temperature water splittingcitations
- 2020CsH2PO4 as Electrolyte for the Formation of CH4 by Electrochemical Reduction of CO2citations
- 2016Amino-Functional Polybenzimidazole Blends with Enhanced Phosphoric Acid Mediated Proton Conductivity as Fuel Cell Electrolytescitations
- 2014Hydrogen evolution activity and electrochemical stability of selected transition metal carbides in concentrated phosphoric acidcitations
- 2014The Chemical Vapour Deposition of Tantalum - in long narrow channels
- 2014Intermediate Temperature Steam Electrolysis with Phosphate-Based Electrolytes
- 2014Development of Non-Platinum Catalysts for Intermediate Temperature Water Electrolysis
- 2014Invited: A Stability Study of Alkali Doped PBI Membranes for Alkaline Electrolyzer Cells
- 2014High Surface Area Tungsten Carbides: Synthesis, Characterization and Catalytic Activity towards the Hydrogen Evolution Reaction in Phosphoric Acid at Elevated Temperatures
- 2013Catalyst Degradation in High Temperature Proton Exchange Membrane Fuel Cells Based on Acid Doped Polybenzimidazole Membranescitations
- 2013Development and Study of Tantalum and Niobium Carbides as Electrocatalyst Supports for the Oxygen Electrode for PEM Water Electrolysis at Elevated Temperaturescitations
- 2012Nickel and its alloys as perspective materials for intermediate temperature steam electrolysers operating on proton conducting solid acids as electrolyte
- 2012WC as a non-platinum hydrogen evolution electrocatalyst for high temperature PEM water electrolyserscitations
- 2012Development of Refractory Ceramics for The Oxygen Evolution Reaction (OER) Electrocatalyst Support for Water Electrolysis at elevated temperaturescitations
- 2011Corrosion behaviour of construction materials for high temperature steam electrolyserscitations
- 2011New Construction and Catalyst Support Materials for Water Electrolysis at Elevated Temperatures
- 2011Oxidative degradation of polybenzimidazole membranes as electrolytes for high temperature proton exchange membrane fuel cellscitations
- 20101.7 nm Platinum Nanoparticles: Synthesis with Glucose Starch, Characterization and Catalysiscitations
- 2010Strategic surface topographies for enhanced lubrication in sheet forming of stainless steelcitations
- 2007Corrosion monitoring in a straw-fired power plant using an electrochemical noise probecitations
- 2005Electrochemical noise measurements of steel corrosion in the molten NaCl-K2SO4 systemcitations
- 2004Development of strategic surface topographies for lubrication in sheet forming of stainless steel
- 2001Phosphoric acid doped polybenzimidazole membranes: Physiochemical characterization and fuel cell applications [PEM fuel cells]
- 2000On the chemical nature of boundary lubrication of stainless steel by chlorine - and sulfur-containing EP-additivescitations
- 2000Cold Forging of Stainless Steel with FeCl3 based lubricants
Places of action
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article
Catalyst Degradation in High Temperature Proton Exchange Membrane Fuel Cells Based on Acid Doped Polybenzimidazole Membranes
Abstract
Degradation of carbon supported platinum catalysts is a major failure mode for the long term durability of high temperature proton exchange membrane fuel cells based on phosphoric acid doped polybenzimidazole membranes. With Vulcan carbon black as a reference, thermally treated carbon black and multi‐walled carbon nanotubes were used as supports for electrode catalysts and evaluated in accelerated durability tests under potential cycling at 150 °C. Measurements of open circuit voltage, area specific resistance and hydrogen permeation through the membrane were carried out, indicating little contribution of the membrane degradation to the performance losses during the potential cycling tests. As the major mechanism of the fuel cell performance degradation, the electrochemical active area of the cathodic catalysts showed a steady decrease in the cyclic voltammetric measurements, which was also confirmed by the post TEM and XRD analysis. A strong dependence of the fuel cell performance degradation on the catalyst supports was observed. Graphitization of the carbon blacks improved the stability and catalyst durability though at the expense of a significant decrease in the specific surface area. Multi‐walled carbon nanotubes as catalyst supports showed further significant improvement in the catalyst and fuel cell durability.