11. |
12. |
13. |
14. |
15. Designing new renewable nano-structured electrode and membrane materials for direct alkaline ethanol fuel cell : Conductivity mechanism information on cross-linked self-standing graphene-polysaccharide derivate membranes and their laminated composites with commercial synthetic membranesEgon Pavlica, Ahmed Kreta, Gvido Bratina, final research report Keywords: graphene, chitosan, polysaccharide, fuel cell, alkaline, ethanol, photoconductivity, ionic conductivity, mixed-conductor model Published in RUNG: 03.12.2020; Views: 2609; Downloads: 0 This document has many files! More... |
16. Designing new renewable nano-structured electrode and membrane materials for direct alkaline ethanol fuel cell : Provided graphene derivates and their cross-linked nanostructured membranes detailed structure informationEgon Pavlica, Ahmed Kreta, Gvido Bratina, final research report Keywords: graphene, membrane, chitosan, polysaccharide, fuel cell, alkaline, ethanol, morphology, elemental analysis Published in RUNG: 03.12.2020; Views: 2769; Downloads: 0 This document has many files! More... |
17. Designing new renewable nano-structured electrode and membrane materials for direct alkaline ethanol fuel cell : Information on catalytic activity, structure and electric current con- ductivity of new catalysts on supporting substratesEgon Pavlica, Gvido Bratina, Jørgen Svendby, Qingjun Chen, Jia Yang, De Chen, Ji-Song Huang, Jessie Lue Shingjiang, 2020, final research report Keywords: fuel cell, ethanol oxidation, graphene, oxygen reduction, catalyst, pt-free, electrochemical impedance spectroscopy Published in RUNG: 03.12.2020; Views: 2852; Downloads: 0 This document has many files! More... |
18. |
19. Learning from Nature: Charge Transfer and Carbon Dioxide Activation at Single, Biomimetic Fe Sites in Tetrapyrroles on GrapheneManuel Corva, Fatema Mohamed, Erika Tomsič, Matteo Rinaldi, Cinzia Cepek, Nicola Seriani, Maria Peressi, Erik Vesselli, 2019, original scientific article Keywords: carbon dioxide, phthalocyanines, graphene, oxygen, Dirac cones Published in RUNG: 03.12.2019; Views: 3241; Downloads: 0 This document has many files! More... |
20. The role of charge transfer at reduced graphene oxide/organic semiconductor interface on the charge transport propertiesGvido Bratina, Egon Pavlica, 2019, original scientific article Abstract: The effect of 1-pyrenesulfonicacid sodium salt (1-PSA), tetracyanoethylene (TCNE) and tetrafluoro- tetracyanoquinodimethane (F4-TCNQ) on charge transport properties of reduced graphene oxide (RGO) is examined by measuring the transfer characteristics of field-effect transistors and co-planar time-of-flight photocurrent technique. Evidence of p-type doping and a reduction of mobility of electrons in RGO upon deposition of these materials is observed. Time-resolved photocurrent measurements show a reduction in elec- tron mobility even at submonolayer coverage of these materials. The variation of transit time with different coverages reveals that electron mobility decreases with increasing the surface coverage of 1-PSA, TCNE and F4- TCNQ to a certain extent, while at higher coverage the electron mobility is slightly recovered. All three molecules show the same trend in charge carrier mobility variation with coverage, but with different magnitude. Among all three molecules, 1-PSA acts as weak electron acceptor compared to TCNE and F4-TCNQ. The additional fluorine moieties in F4-TCNQ provides excellent electron withdrawing capability compared to TCNE. The experimental results are consistent with the density functional theory calculations. Keywords: organic semiconductors, reduced graphene oxide, time-resolved photocurrent measurements, organic thin film transistors Published in RUNG: 28.10.2019; Views: 3619; Downloads: 1 This document has many files! More... |