Browsing by Author "Tsiakaras, P."
Now showing items 1-20 of 120
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Application of Solid oxide proton-conducting electrolytes for amperometric analysis of hydrogen in H-2+N-2+H2O gas mixtures
(2014)Amperometric hydrogen sensors based on proton-conducting solid electrolytes of La0.95Sr0.05YO3, CaTi0.95Sc0.05O3 and CaZr0.9Sc0.1O3 compositions are prepared and investigated in the present work. The influence of the sensor ... -
BaCeO3: Materials development, properties and application
(2014)The characteristic of a number of oxide materials, which include BaCeO3-systems, is their ability to show the proton conductivity along with oxygen-ion conductivity. Such atypical behavior for other oxides attracts great ... -
Benzene electro-oxidation in a PEMFC for phenol and electricity cogeneration
(2005)In the present investigation, the electrochemically-assisted oxidation of benzene in a H2-O2 proton exchange membrane fuel cell (PEMFC), for electricity and phenol cogeneration is studied. Experiments were carried out in ... -
Bi- and tri-metallic Pt-based anode catalysts for direct ethanol fuel cells
(2004)In the present work, several Pt-based anode catalysts supported on activated carbon XC-72R were prepared by using a novel method, characterized and tested. XRD analysis and TEM images indicated that all of anode catalysts ... -
Bi4Cu0.2V1.8O11-delta based membrane electrochemical reactors for propane oxidation at moderate temperatures
(2005)Bi4Cu0.2V1.8O11-delta membrane material was synthesized by following the solid-state method. The oxygen permeation flux at 673 K was found to be 0.5 ml/cm(2) by the use of an external electric power source. The oxidation ... -
Bioethanol steam reforming over Pt and Ag in an electrochemical CSTR reactor
(2005)The environmental problems caused by the intensive use of fossil fuels-as well as their limited availability- are increasingly demanding a more rational use of our energy resources. Among the various fuels which can be ... -
Carbon-supported PdSn and Pd3Sn2 anodes for glucose electrooxidation in alkaline media
(2014)PdSn (20 wt.%) and Pd3Sn2 (20 wt.%) nanoparticles supported on Vulcan XC-72 carbon powders are prepared by a modified microwave-assisted polyol method and studied for the reaction of glucose electrooxidation in alkaline ... -
Catalytic and Electrocatalytic Activation of Methane over Manganese Oxides Deposited on YSZ
(1997)The catalytic and the electrocatalytic behavior of MnO(x) oxides deposited on Yttria Stabilized Zirconia (YSZ) in the form of thin porous films, was studied during the reaction of methane activation at high methane to ... -
Catalytic and electrocatalytic oxidation of ethanol over a La0.6Sr0.4Co0.8Fe0.2O3 perovskite-type catalyst
(2000)The catalytic and electrocatalytic behavior of the perovskite-type La0.6Sr0.4Co0.8Fe0.2O3 catalyst was investigated during ethanol oxidation. Experiments were carried out at atmospheric pressure in a fully yttria-stabilized ... -
Catalytic Behavior of La(0.6)Sr(0.4)Co(0.8)Fe(0.2)O(3) Perovskite-Type Oxide Thin Films Deposited on YSZ During the Reaction of Ethanol Oxidation
(1998)The perovskite-type oxide La(0.6)Sr(0.4)Co(0.8)Fe(0.2)O(3) was studied as an ethanol oxidation catalyst-anode as a probable candidate for future application in Solid Oxide Fuel Cells (SOFCs). The investigation was carried ... -
Ceria promoted Pd/C catalysts for glucose electrooxidation in alkaline media
(2015)Carbon support materials are modified by CeO2 through a microwave decomposition method, and then CeO2-C supported Pd catalysts are synthesized by a pulse microwave assisted polyol method. The content of CeO2 is appropriately ... -
Conductivity of Gd-doped BaCeO3 protonic conductor in H-2-H2O-O-2 atmospheres
(2014)In the present investigation, a radically new and simple method of evaluation of the proton conductivity is proposed. This method is based on the conductivity measurement of ceramic materials depending on the oxygen partial ... -
Conductivity of Gd-doped BaCeO3 protonic conductor in H2-H2O-O2 atmospheres
(2013)This work proposes a radically new simple method of evaluation of the proton conductivity based on measurement of the conductivity of ceramic materials depending on the oxygen partial pressure (pO2) at a gradual transition ... -
Cu and Gd co-doped BaCeO3 proton conductors: Experimental vs SEM image algorithmic-segmentation results
(2014)Segmentation algorithms for the quantitative description of the surface microstructure and the evaluation of the grain-boundary conductivity of ceramic materials surface using SEM microphotographs analysis was developed ... -
Degradation of perfluorinated sulfonic acid films: An in-situ infrared spectro-electrochemical study
(2009)The in-situ Fourier transform infrared (FTIR) spectro-electrochemical method was used to evaluate the degradation mechanism of perfluorinated sulfonic acid (PFSA) polymer for the first time. The effect of H 2O 2 concentration ... -
Dimethyl phthalate degradation at novel and efficient electro-Fenton cathode
(2014)A novel three-dimensional porous carbon nanotube sponge (CNTS) with high electrical conductivity was prepared, characterized and investigated as the catalytic cathode for oxygen reduction and employed for an electro-Fenton ... -
Direct alcohol fuel cells: A novel non-platinum and alcohol inert ORR electrocatalyst
(2008)In the present investigation, a series of binary PdxFey/C electrocatalysts for the oxygen reduction reaction (ORR) was synthesized in a very short time by employing a pulse-microwave assisted polyol method. The physico-chemical ... -
Direct alcohol fuel cells: Challenges and future trends
(2011)Among the most considered future alternative energy conversion systems are fuel cells. A fuel cell is an electrochemical device that continuously and directly converts chemical energy to electricity with the most common ... -
Direct ethanol fuel cell anode simulation model
(2006)The electrochemical behavior of a direct ethanol feed proton exchange membrane fuel cell (DEFC) operating under steady-state isothermal conditions at 1 atm at both anode and cathode sides is considered. A mathematical model ... -
Direct ethanol fuel cells based on PtSn anodes: The effect of Sn content on the fuel cell performance
(2005)In the present work, several carbon supported PtSn catalysts with different Pt/Sn atomic ratios were synthesized and characterized by X-ray diffraction (XRD), Transmission electron microscopy (TEM) and X-ray photoelectron ...