Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Serguei D. Mikhailenko"'
Autor:
Raquel Santos Mauler, Fabrício Celso, Serge Kaliaguine, Marco Antônio Siqueira Rodrigues, Serguei D. Mikhailenko
Publikováno v:
Journal of Power Sources. 305:54-63
Composite proton exchange membranes (PEMs) intended for fuel cell applications were prepared by embedding of various amounts of dispersed tri-sulfonic acid ethyl POSS (S-Et-POSS) and tri-sulfonic acid butyl POSS (S-Bu-POSS) in thin films of sulfonate
Autor:
Serge Kaliaguine, Franciélli Müller, Carlos A. Ferreira, Marco Antônio Siqueira Rodrigues, Serguei D. Mikhailenko, Fabrício Celso
Publikováno v:
The journal of physical chemistry. B. 122(31)
Doped polyaniline (PANI) is well-known as an electronic (polaronic) conductor and mostly is used as semiconductor in various applications. However, in the literature there are examples of employment of the acid doped form of PANI as electrolytic fill
Autor:
Fabrício Celso, Letícia Zanchet, Roberto F. de Souza, Michèle Oberson de Souza, Serguei D. Mikhailenko, Janine C. Padilha, Márcia Regina Becker, Letícia Guerreiro da Trindade
Publikováno v:
Materials Chemistry and Physics. 148:648-654
Two types of sulfonic acid membranes perfluorinated (Nafion) and poly(ether–ether-ketone) (SPEEK) were modified by impregnation with the ionic liquid (IL) 1-butyl-3-methylimidazolium tetrafluoroborate (BMI.BF4). The ionic exchange between the butyl
Publikováno v:
Electrochimica Acta. 136:457-465
Three series of composite proton exchange membranes containing SiO2 as filler were prepared and studied by a.c. impedance spectroscopy. Cast membranes were based on SPEEK and Nafion polymers and one more series was obtained by Nafion impregnation via
Publikováno v:
The Journal of Physical Chemistry C. 118:9165-9175
The products of thermal transformation of MOF-253 (Al-containing MOF) and its Pt-based derivative, into carbon-black-based electrocatalyst were studied using ac impedance spectroscopy. The thermolysis was carried out at 700–1050 °C under an inert
Publikováno v:
Journal of Power Sources. 239:415-423
Pt nanoparticles as the common electrocatalyst for proton exchange membrane fuel cells (PEMFCs) were prepared for the first time from metal organic frameworks (MOFs). Pt containing MOF was synthesized and subsequently subjected to pyrolytic carboniza
Publikováno v:
Journal of Membrane Science. 345:315-322
Three batches of SPEEK based PEMs were modified by embedding a free radical scavenger, catechin, belonging to a group of polyphenolic compounds, which is known for its biological activity and exhibits a high scavenging effect. Initial and modified me
Autor:
Raquel Santos Mauler, Ailton S. Gomes, Ueiler Lisoski Duarte, Fabrício Celso, Serge Kaliaguine, Serguei D. Mikhailenko
Publikováno v:
Journal of Membrane Science. 336:118-127
Composite SPEEK based PEMs, containing tungstophosphoric acid (TPA) and modified with benzimidazole derivatives as cross-linking spacers, were prepared and characterized by a number of physico-chemical methods. It was observed, that the cross-linking
Publikováno v:
Solid State Ionics. 179:619-624
The methodology of PEM conductivity measurements is discussed for examples of literature data and results of the experiments, carried out in this study. It is shown here that a simple two-electrode cell proposed in this work, operated at frequencies
Publikováno v:
Journal of Membrane Science. 285:306-316
PEMs prepared from sulfonated poly(ether ether ketone) and cross-linked with simple polyols (ethylene glycol and glycerol), exhibited enhanced strength, stability in hot water and high proton conductivity. The properties and chemical structure of the