Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Ioanna Martinaiou"'
Autor:
Ioanna Martinaiou, Maria K. Daletou
Publikováno v:
Energies, Vol 17, Iss 14, p 3443 (2024)
Proton Exchange Membrane Fuel Cells (PEMFCs) represent a promising green solution for energy production, traditionally relying on platinum-group-metal (PGM) electrocatalysts. However, the increasing cost and limited global availability of PGMs have m
Externí odkaz:
https://doaj.org/article/bdc6a73d862948b884c03d735beb4c2a
Publikováno v:
Materials, Vol 14, Iss 7, p 1679 (2021)
Perovskite solar cells (PSCs) have attracted great research interest in the scientific community due to their extraordinary optoelectronic properties and the fact that their power conversion efficiency (PCE) has increased rapidly in recent years, sur
Externí odkaz:
https://doaj.org/article/d283964ff2264e708fe9eba77968f6e1
Autor:
Sven Schardt, Natascha Weidler, W. David Z. Wallace, Ioanna Martinaiou, Robert W. Stark, Ulrike I. Kramm
Publikováno v:
Catalysts, Vol 8, Iss 7, p 260 (2018)
In this work, the influence of the structure-forming agent on the composition, morphology and oxygen reduction reaction (ORR) activity of Fe-N-C catalysts was investigated. As structure-forming agents (SFAs), dicyandiamide (DCDA) (nitrogen source) or
Externí odkaz:
https://doaj.org/article/67edc609c7fb4cd591f4414b5622e93e
Autor:
Thomas Wolker, Kai Brunnengräber, Ioanna Martinaiou, Nick Lorenz, Gui-Rong Zhang, Ulrike I. Kramm, Bastian J.M. Etzold
Publikováno v:
Journal of Energy Chemistry. 68:324-329
Autor:
Konstantina Gkini, Ioanna Martinaiou, Martha Botzakaki, Polychronis Tsipas, Lazaros Theofylaktos, Athanasios Dimoulas, Fotios Katsaros, Thomas Stergiopoulos, Christoforos Krontiras, Stavroula Georga, Polycarpos Falaras
Publikováno v:
Materials Today Communications. 32:103899
Publikováno v:
Materials
Materials, Vol 14, Iss 1679, p 1679 (2021)
Materials, Vol 14, Iss 1679, p 1679 (2021)
Perovskite solar cells (PSCs) have attracted great research interest in the scientific community due to their extraordinary optoelectronic properties and the fact that their power conversion efficiency (PCE) has increased rapidly in recent years, sur
Exploring Active Sites in Multi-Heteroatom-Doped Co-Based Catalysts for Hydrogen Evolution Reactions
Autor:
Robert W. Stark, K. Alexander Creutz, Markus Kübler, Natascha Weidler, Simon T. Ranecky, Oliver Clemens, Ioanna Martinaiou, W. David Z. Wallace, Mohammad Ali Nowroozi, Ali Shahraei, Ulrike I. Kramm
Publikováno v:
Chemistry - A European Journal. 24:12480-12484
Today, metal-N- as well as metal-S-doped carbon materials are known to catalyze the hydrogen evolution reaction (HER). However, especially N- and S-co-doped catalysts reach highest activity, but it remains unclear if the activity is related to MNx or
Autor:
Robert W. Stark, Ali Shahraei, W. David Z. Wallace, Markus Kuebler, Natascha Weidler, Ulrike I. Kramm, K. Alexander Creutz, Ioanna Martinaiou, Mohammad Ali Nowroozi, Stephen Paul, Oliver Clemens
Publikováno v:
Journal of Materials Chemistry A. 6:22310-22319
The influence of high S/Co ratios on the structural composition and oxygen evolution reaction (OER) activity of a group of cobalt-based carbon catalysts was investigated. Catalysts were prepared from polyaniline, cobalt acetate and dicyandiamide as p
Publikováno v:
Nachrichten aus der Chemie. 65:1096-1099
Bereits seit einigen Jahren gelten Metall-N-C-Katalysatoren als vielversprechendste Alternative zu Pt/C, um Sauerstoff in Brennstoffzellen zu reduzieren. Diese Katalysatoren eignen sich jedoch auch fur viele andere elektrokatalytische Prozesse wie di
Autor:
Jörg J. Schneider, Arne Janßen, Ioanna Martinaiou, Ali Shahraei, Deepu J. Babu, Stephen Paul, Ulrike I. Kramm, Natascha Weidler, Stephan Wagner, Robert W. Stark
Publikováno v:
ResearcherID
In view of the transfer from fossil fuels to renewable energies, electrochemical reactions offer the chance of a fast and environmentally friendly production of chemicals or the transfer of chemical energy into electric energy (e.g. via fuel cells).