Improvement of carbon dioxide tolerance of PEMFC electrocatalyst by using microwave irradiation technique

2008-12-01
Bayrakceken, Ayse
Tuerker, Lemi
Inci, Eroglu
The microwave irradiation technique was used to prepare platinum and platinum-ruthenium-based electrocatalysts on Vulcan for PEMFCs. The effects of microwave duration, base concentration and surfactant/precursor ratios on the properties of Pt-based catalysts were investigated. The prepared Pt-based catalysts were characterized by XRD and then PEMFC tests were performed. The particle sizes of the catalysts were ranging between 2 and 6 nm. Platinum-ruthenium-based catalysts were prepared to improve the carbon dioxide tolerance of the PEMFCs. The power losses arising from carbon dioxide in hydrogen feed were decreased by using the prepared PtRu-based catalysts when 30% carbon dioxide including hydrogen was sent to the fuel cell. (c) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

Suggestions

A comparative study for synthesis methods of nano-structured (9Ni-2Mg-Y) alloy catalysts and effect of the produced alloy on hydrogen desorption properties of MgH2
Pourabdoli, Mehdi; Raygan, Shahram; Abdizadeh, Hossein; Üner, Deniz (Elsevier BV, 2013-12-13)
9Ni-2Mg-Y alloy powders were prepared by arc melting, induction melting, mechanical alloying, solid state reaction and subsequent ball milling processes. The results showed that melting processes are not suitable for preparation of 9Ni-2Mg-Y alloy due to high losses of Mg and Y. Therefore, 9Ni-2Mg-Y alloy powder was prepared by three methods including: 1) mechanical alloying, 2) mechanical alloying + solid state reaction + ball milling, and 3) mixing + solid state reaction + ball milling. The prepared 9Ni-2...
Enhancement of hydrogen storage capacity of multi-walled carbon nanotubes with palladium doping prepared through supercritical CO2 deposition method
ERÜNAL, EBRU; Ulusal, Fatma; ASLAN, MUSTAFA YASİN; GÜZEL, BİLGEHAN; Üner, Deniz (Elsevier BV, 2018-06-07)
Pd doped Multi-Walled Carbon Nanotubes were prepared via supercritical carbon dioxide deposition method in order to enhance the hydrogen uptake capacity of carbon nanotubes at ambient conditions. A new bipyridyl precursor that enables reduction at moderate conditions was used during preparation of the sample. Both XRD analyses and TEM images confirmed that average Pd nanoparticle size distribution was around 10 nm. Hydrogen adsorption and desorption experiments at room temperature with very low pressures (0...
Evaluation of hybridsolar-wind-hydrogenenergy system based on methanol electrolyzer
Budak, Yagmur; DEVRİM, YILSER (Wiley, 2020-10-01)
In this study, it is aimed to meet the annual electricity and heating needs of a house without interruption with the photovoltaic panel, wind turbine, methanol electrolyzer, and high temperature proton exchange membrane fuel cell system. The system results show that the use of the 2 WT with 18 PV was enough to provide the need of the methanol electrolyzer, which provides requirements of the high temperature proton exchange membrane fuel cell. The produced heat by the fuel cell was used to meet the heat requ...
Improved oil recovery application in limestone reservoirs using alkaline solutions
Bagci, S.; Kök, Mustafa Verşan; Turksoy, U. (Informa UK Limited, 2007-09-01)
In this research, the effect of sodium hydroxide (NaOH) and sodium silicate (NaSiO4) solutions for the improved oil recovery of Raman crude oil was investigated using a one-dimensional unconsolidated limestone reservoir model. The results of displacement tests showed that sodium hydroxide (NaOH) and sodium silicate (NaSiO4) solutions were not effective on incremental oil recovery. It was also observed that injection flow rate of alkaline solution has minimum effect on Raman crude oil in scope of oil recover...
Morphology effect on electrochemical properties of doped (W and Mo) 622NMC, 111NMC, and 226NMC cathode materials
Pişkin, B.; Uygur, Cansu Savaş; Aydınol, Mehmet Kadri (Elsevier BV, 2020-03-01)
An investigation was carried out on layered Li(NixMnyCo1-x-y)O-2 (NMC) cathode active materials for Li-ion batteries to determine the effect of morphology on their electrochemical performances. The NMC active materials were doped with Mo or W (2 wt%) in the study. Doped NMC cathodes with a ratio of 111, 622 and 226 (NiMnCo) were synthesized by spray pyrolysis which yielded aggregates were submicron size. A systematic investigation was performed, and two distinct morphology types were identified in active ma...
Citation Formats
A. Bayrakceken, L. Tuerker, and E. Inci, “Improvement of carbon dioxide tolerance of PEMFC electrocatalyst by using microwave irradiation technique,” INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, pp. 7527–7537, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/66897.