Sfoglia per Autore "Tsiakaras, P."
Items 21-40 di 120
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Direct ethanol fuel cells: The effect of the cell discharge current on the products distribution
Andreadis, G.; Stergiopoulos, V.; Song, S.; Tsiakaras, P. (2010)In the present work the results of the continuous and on-line product analysis during a Direct Ethanol Polymer Electrolyte Membrane Fuel Cell operation (DE-PEMFC) are presented. The effect of both cell discharge current ... -
Direct ethanol PEM fuel cells: The case of platinum based anodes
Song, S. Q.; Zhou, W. J.; Zhou, Z. H.; Jiang, L. H.; Sun, G. Q.; Xin, Q.; Leontidis, V.; Kontou, S.; Tsiakaras, P. (2005)PtSn/C catalysts were prepared by the direct decoration of Pt/C with Sn through a modified poly process. XRD results showed there existed obvious SnO2 in this catalyst, different from the PtSn/C prepared by co-precipitation, ... -
Direct ethanol solid oxide fuel cells: The case of PT anodes
Poulianitis, C.; Maragou, V.; Dio, E.; Song, S.; Tsiakaras, P. (2005)The limitation of fossil fuels deposits and the detrimental effects of their combustion emissions on the environment make it necessary to develop alternative technologies, such as fuel cells and use the renewable and ... -
Direct methanol fuel cells: Methanol crossover and its influence on single DMFC performance
Song, S. Q.; Zhou, W. J.; Li, W. Z.; Sun, G.; Xin, Q.; Kontou, S.; Tsiakaras, P. (2004)In the present investigation, the methanol crossover rate through Nafion((R))-115 membrane at different temperatures and different concentrations had been investigated in a fuel cell test apparatus by using gas chromatography ... -
Direct methanol fuel cells: The effect of electrode fabrication procedure on MEAs structural properties and cell performance
Song, S. Q.; Liang, Z. X.; Zhou, W. J.; Sun, G. Q.; Xin, Q.; Stergiopoulos, V.; Tsiakaras, P. (2005)In the present paper, the effect of electrode preparation procedure on the structural properties of membrane electrode assembly (MEA) and consequently on the performance of direct methanol fuel cells (DMFCs) was investigated. ... -
Direct methanol fuel cells: The influence of methanol on the reduction of oxygen over Pt/C catalysts with different particle sizes
Li, W. Z.; Song, S. Q.; Zhou, W. J.; Sun, G. Q.; Xin, Q.; Poulianitis, C.; Tsiakaras, P. (2005)Two Pt/C catalysts with different particle sizes (Pt/C: 2.5 nm, Pt/C-700Ar: 5.1 nm) were investigated by applying a half-cell configuration - rotating disk electrode (RDE) technique in H2SO4 aqueous solutions in the absence ... -
The effect of cobalt oxide addition on the properties of gadolinium doped barium cerate
Maragou, V.; Medvedev, D.; Gorbova, E.; Demin, A.; Tsiakaras, P. (2009)In the present work the effect of cobalt oxide addition on the density and on the electrical properties of gadolinium doped barium cerate is investigated. A series of BaCe0.9-xGd0.1CoxO3-δ (?=0.00, 0.01, 0.03, 0.05, 0.07, ... -
The effect of methanol and ethanol cross-over on the performance of PtRu/C-based anode DAFCs
Song, S.; Zhou, W.; Liang, Z.; Cai, R.; Sun, G.; Xin, Q.; Stergiopoulos, V.; Tsiakaras, P. (2005)In the present work, the cross-over rates of methanol and ethanol, respectively, through Nafion®-115 membranes at different temperatures and different concentrations have been measured and compared. The changes of Nafion®-115 ... -
The effect of microwave operation parameters on the electrochemical performance of Pt/C catalysts
Song, S.; Liu, J.; Shi, J.; Liu, H.; Maragou, V.; Wang, Y.; Tsiakaras, P. (2011)In the present work, the effect of the microwave operation parameters on the heating behaviour of ethylene glycol (EG) solution and thereafter on the physicochemical and electrochemical properties of Pt/C catalysts have ... -
The effect of nano-sized Al2O3 and CO2O3 addition on the properties of fluorite-type ceria-based oxide composite electrolytes for SOFC applications
Pikalova, E. Yu; Proshina, A. V.; Maragou, V.; Demin, A. K.; Tsiakaras, P. (2011)The present work focuses on the influence of nano-sized Al2O3 and Co2O3 addition on the microstructure, mechanical and electrical properties of the solid state compositions Ce0.8Gd0.2O2-δ, Ce0.8Sm0.2O2-δ, Ce0.8Sm0.1Nd0.1O2-δ ... -
Effect of nature of the ceramic component of the composite electrodes based on La<inf>1.7</inf>Ca(Sr)<inf>0.3</inf>NiO<inf>4+δ</inf> on their electrochemical performance
Pikalova, E. Yu; Bogdanovich, N. M.; Kolchugin, A. A.; Brouzgou, A.; Bronin, D. I.; Plaksin, S. V.; Khasanov, A. F.; Tsiakaras, P. (2015)The manuscript focuses on the electrochemical performance of the La<inf>1.7</inf>Ca<inf>0.3</inf>NiO<inf>4+δ</inf> (LCNO) and La<inf>1.7</inf>Sr<inf>0.3</inf>NiO<inf>4+δ</inf> (LSNO) based composite cathodes with ... -
Effect of pore morphology of mesoporous carbons on the electrocatalytic activity of Pt nanoparticles for fuel cell reactions
Song, S.; Liang, Y.; Li, Z.; Wang, Y.; Fu, R.; Wu, D.; Tsiakaras, P. (2010)In the present investigation, the role of the pore morphology of mesoporous carbons in the electrocatalytic activity of Pt nanoparticles for fuel cell reactions has been successfully revealed by adopting ordered mesoporous ... -
The effect of the MEA preparation procedure on both ethanol crossover and DEFC performance
Song, S.; Wang, G.; Zhou, W.; Zhao, X.; Sun, G.; Xin, Q.; Kontou, S.; Tsiakaras, P. (2005)In the present work, the changes of Nafion((R))-115 membrane porosity in the presence of ethanol aqueous solutions of different concentrations were determined by weighing vacuum-dried and ethanol solution-equilibrated ... -
Effects of seeding on large crystal growth of NaX zeolite by continuous crystallisation
Kim, I. J.; Lee, H. J.; Tsiakaras, P. (2005)The problem with zeolite crystals synthesized by conventional method is that they are extremely small of two to eight microns, To better define the structure of zeolite, scientist need to grow crystal that are 100 to 1000 ... -
Efficient and poison-tolerant PdxAuy/C binary electrocatalysts for glucose electrooxidation in alkaline medium
Yan, L.; Brouzgou, A.; Meng, Y.; Xiao, M.; Tsiakaras, P.; Song, S. (2014)Carbon supported PdxAuy binary catalysts for glucose electrooxidation and detection were prepared by a modified pulse microwave assisted polyol method. The physico-chemical properties were obtained by X-ray diffraction ... -
Efficient and Stable Carbon-coated Nickel Foam Cathodes for the Electro-Fenton Process
Song, S.; Wu, M.; Liu, Y.; Zhu, Q.; Tsiakaras, P.; Wang, Y. (2015)Carbon-coated nickel foam (C@NF) electrodes are prepared via a simple and effective method, hydrothermal-carbonization cycle coating process, characterized by scanning electron microscopy (SEM) with energy dispersive ... -
Electrocatalytic activity of Vulcan-XC-72 supported Pd, Rh and PdxRhy toward HOR and ORR
Tzorbatzoglou, F.; Brouzgou, A.; Tsiakaras, P. (2015)Carbon-supported (Vulcan XC-72) Pd, Rh, and PdxRhy (20 wt%, x:y = 1:1, 3:1, 1:3) electrocatalysts are prepared according a modified pulse-microwave assisted polyol synthesis method and their electrocatalytic activity toward ... -
Electrochemical Promotion of Pt During the Oxidation of Ethanol
Douvartzides, S.; Kyriakopoulos, K.; Tsiakaras, P. (2001)The reaction of ethanol oxidation has been examined over a Pt polycrystalline film deposited on an yttria stabilized zirconia (YSZ) electrochemical reactor. Experiments were carried out at 325 degrees C at atmospheric total ... -
Electrochemical properties of ceramic membranes based on SrTi0.5Fe0.5O3-delta in reduced atmosphere
Murashkina, A.; Maragou, V.; Medvedev, D.; Sergeeva, V.; Demin, A. K.; Tsiakaras, P. (2012)The present work aims at the investigation of the electrochemical properties of SrTi0.5Fe0.5O3-delta as a membrane material for hydrogen production via electrochemical reforming. The dependence of the electrical conductivity ... -
Electrodes for solid electrolyte sensors for the measurement of CO and H-2 content in air
Fadeyev, G.; Kalakin, A.; Demin, A.; Volkov, A.; Brouzgou, A.; Tsiakaras, P. (2013)Using a test-tube made of yttria-stabilized zirconia (YSZ) as a measuring cell, different simple oxides MexOy (M = Zn, Sn, Cr, In), complex oxides with perovskite structure (La0.8Sr0.2CrO3 and La0.6Sr0.4MnO3) and silver ...