Dissertation/ Thesis
Παραγωγή Υδρογόνου με τη χρήση νανοτεχνολογίας ; Hydrogen production through nanotechnology
| العنوان: | Παραγωγή Υδρογόνου με τη χρήση νανοτεχνολογίας ; Hydrogen production through nanotechnology |
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| المؤلفون: | Poimenidis, Ioannis, Ποιμενίδης, Ιωάννης |
| بيانات النشر: | Technical University of Crete (TUC) Πολυτεχνείο Κρήτης |
| سنة النشر: | 2022 |
| المجموعة: | National Archive of PhD Theses (National Documentation Centre Greece) |
| مصطلحات موضوعية: | Ανάπτυξη νανοσωματιδίων, Ηλεκτρόλυση νερού, Νανοδομές νικελίου με λέιζερ, Νανοδομές σιδήρου λέιζερ, Ανάλυση νανοδομών, Ηλεκτροεναπόθεση σε ηλεκτρόδια με λέιζερ, Nanostructured, Water electrolysis, Ni laser nanostructures, Fe laser nanostructures, Electrodeposition on laser nanostructures, Nanostructure analysis, Φυσική, Φυσικές Επιστήμες, Οπτική, Νανοτεχνολογία, Επιστήμες Μηχανικού και Τεχνολογία, Νανοεπιστήμη και Νανοτεχνολογία, Physical Sciences, Natural Sciences, Optics, Nano-Technology, Engineering and Technology, Nanoscience and Nanotechnology |
| الوصف: | The future energy requirements are impossible to meet through existing energyproduction methods. New innovative and environmentally friendly forms of energy needto be invented and implemented immediately. An environmentally friendly method ofenergy production is the energy that can be obtained from hydrogen.The present thesis deals diligently with the increase of hydrogen productionthrough the fabrication of nanostructured electrodes and their use in alkalineelectrolysis. The primary study of this thesis is the Hydrogen Evolution Reaction (HER)and how the fabricated nanostructured surfaces improve the reaction efficiency.This thesis has the following research objectives:i. The development of a new method of fabricating electrodes with resistance inalkaline solutions by a relatively straightforward process,ii. The creation of nanostructures using short-term laser pulses on the substrateof Ni and Fe electrodes to increase their electrocatalytically active surface,iii. The additional increase of the electrocatalytic surface of the lasernanostructured surfaces with electrodeposition of Ni particles,iv. The enhancement of hydrogen production of the nanostructured electrodes,v. The creation of a setup for measuring the produced hydrogen, which may besubject to changes depending on the size of the electrodes.At the same time, with the application of short-term laser pulses for thereconstruction of surfaces and the creation of electrodes for their use in HER, there is apossibility of creating complex architectural forms on the substrate with high adsorptionfor subsequent particle deposition.The results obtained in the experimental part show that the laser-nanostructurednickel electrodes increased the hydrogen production up to 4.5 times compared to a nonnanostructurednickel electrode. Moreover, the fabricated laser-nanostructured ironelectrode increased hydrogen production by up to 50% compared to an untreated ironelectrode. The nanostructured nickel and iron electrodes may also be used as cathodeand anode for a ... |
| نوع الوثيقة: | doctoral or postdoctoral thesis |
| اللغة: | Greek, Modern (1453-) |
| Relation: | http://hdl.handle.net/10442/hedi/51692 |
| DOI: | 10.12681/eadd/51692 |
| الاتاحة: | http://hdl.handle.net/10442/hedi/51692 https://doi.org/10.12681/eadd/51692 |
| رقم الانضمام: | edsbas.33CBF484 |
| قاعدة البيانات: | BASE |
| DOI: | 10.12681/eadd/51692 |
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