Zobrazeno 1 - 10
of 89
pro vyhledávání: '"E. Lefterova"'
Publikováno v:
Emerging Science Journal, Vol 8, Iss 5, Pp 1686-1696 (2024)
The current research aims to present the structural characterization of Gd-doped ceria powders and ceramics, investigating the structural evolution resulting from cerium substitution with Gd across the entire composition range from 0 to 100 mol.% Gd2
Externí odkaz:
https://doaj.org/article/1f2e2f9f586b4f3ab7f3120cbf64e893
Akademický článek
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Autor:
S. Soreto Teixeira, P. Petkov, D. Blaskova-Kochnitcharova, E. Lefterova, L.C. Costa, B.M.G. Melo, Tamara Petkova
Bulk samples of the ternary TiO2–V2O5–P2O5 system have been synthesized by the melt-quenching technique. X-ray diffraction and scanning electron microscopy with energy-dispersive spectroscopy were applied for structure and composition identificat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6feb5c74cbd9ad4c8ade0e2ce6eed257
http://hdl.handle.net/10773/37721
http://hdl.handle.net/10773/37721
Akademický článek
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Akademický článek
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Autor:
Evelina Slavcheva, Uwe Schnakenberg, Jochen Heiss, Galin Borisov, E. Lefterova, Elitsa Petkucheva
Publikováno v:
International Journal of Hydrogen Energy. 43:16905-16912
This work presents a research on the preparation of thin composite catalytic films in which an essential part of the efficient but expensive Ir is substituted by Au sub-layer using the preparation method of direct current magnetron sputtering (DCMS).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71127c9eff67c7b0cd04b5f8ce55ffd6
https://doi.org/10.1016/j.ijhydene.2018.01.188
https://doi.org/10.1016/j.ijhydene.2018.01.188
Publikováno v:
International Journal of Hydrogen Energy. 43:16897-16904
The aim of this work is to investigate the natural mineral Montmorillonite (MMT) as catalytic support and to assess the efficiency of the composite MMT-supported Ir toward OER in acidic electrochemical water splitting. MMT is a phyllosilicate layered
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd735d955264de7f28b26ee5bea1482a
https://doi.org/10.1016/j.ijhydene.2018.01.012
https://doi.org/10.1016/j.ijhydene.2018.01.012
Autor:
Galin Borisov, E. Lefterova, Vesselin Sinigersky, Katerina Maksimova-Dimitrova, Evelina Slavcheva, Hristo Penchev, Filip Ublekov
Publikováno v:
Materials Letters. 240:144-146
In the present communication we report the electro catalytic performance of non-precious monometallic catalysts (Ni and Co), synthesized by sol–gel method and homogeneously dispersed on titanium sub-oxide carrier. Morphology and surface structure o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::758fd9d1f540e3c783b142fa408f9c46
https://doi.org/10.1016/j.matlet.2018.12.141
https://doi.org/10.1016/j.matlet.2018.12.141
Publikováno v:
International Journal of Hydrogen Energy. 42:28777-28785
Tri-component Ni-Co-Cu and Ni-Mo-Cu alloys are electrodeposited depending on current density, temperature and copper ion electrolyte concentration. In both systems hydrogen evolution reaction (HER) is studied by polarization dependences and electroch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb4864a16083665061f7810a86d785a2
https://doi.org/10.1016/j.ijhydene.2017.10.002
https://doi.org/10.1016/j.ijhydene.2017.10.002
Publikováno v:
International Journal of Hydrogen Energy. 41:12762-12771
The present paper reports on the electrodeposition of crystalline NiFeCo and amorphous NiFeCoP alloys at various conditions of the electrolysis process (different current densities) leading to differences in component composition. Alloys are characte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e47cfb3c8f409278cf43a9b65cb29bc8
https://doi.org/10.1016/j.ijhydene.2016.05.164
https://doi.org/10.1016/j.ijhydene.2016.05.164