My Projects

Development of Integrated Advanced Materials and Processes for Efficient Hydrogen Storage (2012 - 2014)

The research was focus on developing new types of Mg-TM metallic hydride nanocomposite materials for the safe hydrogen storage. The main idea is to overcome obstacles like the high operational temperature and slow kinetics of Mg hydrides. This can be achieved by the use of catalysts, nanostructuring and/or alloying. However, the hydrogen desorption in Mg-based system still takes place at critical high temperatures, which remains now the only barrier for practical applications. So we intended to to reduce the desorption temperature by modifying the thermodynamics of Mg and Mg-based materials, by: (1) reducing the particles/grains size to the nanoscale range, (2) increasing the density of defects, (3) partial alloying with other elements

Ανάπτυξη Προηγμένων Υλικών και Διεργασιών για Aποτελεσματική Αποθήκευση του Υδρογόνου ( ΓΓΕΤ 11ROM 1_3_ET 30) Το πρόγραμμα εστιάσθηκε στην ανάπτυξη ενσωματωμένων προηγμένων υλικών και διαδικασιών για την αποδοτική αποθήκευση του υδρογόνου σε ευνοϊκότερες συνθήκες για τεχνολογική χρήση σε κυψέλες καυσίμου στα ηλεκτρικά οχήματα, έτσι ώστε τα υλικά να είναι συμπαγή, ελαφριά, ασφαλή και προσιτά οικονομικά. Εξετάστηκαν δύο διαφορετικές προσεγγίσεις: (1) η ανάπτυξη και ο πλήρης χαρακτηρισμός του νανοφασικού συστήματος (Mg-Pd)(Ni-TM)2 (όπου TM = μεταβατικά μέταλλα όπως V, Mn, Cr) και (2) η ανάπτυξη και η μελέτη νέων νανο-σύνθετων υλικών με βάση το κράμα Ti-V-(Fe-TM), όπου TM = V, Mn. Για το σκοπο αυτο σχεδιάσαμε αναπτύξαμε νέα νανοσύνθετα υλικά τα οποία παρασκευάστηκαν με μίξη μέταλλων /κραμάτων με διαφορετικές ιδιότητες αποθήκευσης υδρογόνου.

Detailed information of delivered product are given in the files below:

mg_based_nanocomposite_gjoka_oral_athens_solid_state-2013_athens-final.pdf

ESPA-project:Open day

Horizon 2020 (2016-2018)

Call: H2020-MSCA-RISE-2015 Topic: MSCA-RISE-2015 Action: MSCA-RISE Proposal Number: 691235 Proposal Acronym: INAPEM

Objectives

The main objective of this Marie Curie RISE action is to improve and exchange interdisciplinary knowledge of materials design by modelling, materials synthesis, characterization, and materials processing for permanent magnet development to be able to provide a critical raw free permanent magnet to the industry. Permanent magnets are indispensable for many commercial and military applications. Major commercial applications include the electric, electronic and automobile industries, communications, information technologies and automatic control engineering. Development and improvement of new technologies based on permanent magnets requires the joint effort of a multidisciplinary researcher collective, involving the expertise of participants on different disciplines including physics, chemistry, materials science and engineering. A consortium with such expertise is put together to undertake an integrative and concerted effort (via knowledge transfer) to provide the fundamental innovations and breakthroughs that are needed to fabricate/implement industrially new phases and microstructures required for the development and application of advanced permanent magnets without the use of critical materials.

Results will be widely disseminated through publications, workshops, post-graduate courses to train new researchers, a dedicated webpage, and visits to companies working in the area. In that way, we will perform an important role in technology transfer between the most advanced hard and soft magnetic materials design and characterisation methods for the development of permanent magnets.

“Development of Integrated Advanced Materials and Processes for Efficient Hydrogen Storage(15 kEU, ) ΓΓΕΤ 11ROM 1_3_ET 30 Greek-Rumanian project (2012-2014)

Sub-contract of Materials for Fusion Technology project (Nr 687, financial support by EU) Magnetic characterization Scientific Responsible: 2008-2017

“New magnetic nanomaterials, syntheses, characterization and applications”.2006-2008” Greek -(11170 kEu),Scientific coordinator of a Greek-Rumanian 2006-2008

OTHER PROJECTS (ON GOING)-NOVAMAG (2016-2018)

Participant No.7: NCSR ‘Demokritos’, Institute of Nanoscience and Nanotechnology (INN) , NCSR Demokritos,Athens, GREECE (http://inn.demokritos.gr/project/permanent-magnets-magnetic-recording-and-thermoelectrics/ Role in the project WP Involvement - Major WP3 Minor WP1, WP6,WP7

Qualifications and experience for the project:

The Institute of Nanoscience and Nanotechnology (INN) of NCSR “Demokritos” was established from the merger of the Institutes of Materials Science, Microelectronics and Physical Chemistry, as a result of a National reorganization of research institutions in Greece in 2013. INN efficiently organizes and integrates most of the best research and human resources available in Greece to address the innovation challenge and to increase the European competitiveness of the country in Key Enabling Technologies (KETs) such as nanotechnology, micro- and nanoelectronics, advanced materials, biotechnology and photonics. INN provides a unique environment to promote and support world-class multidisciplinary basic and applied research, while forging ties with industry and SMEs it promotes the transfer of innovation to the market. The RTD activities of INN are structured in five concerned actions (programs):a)Chemical Sciences for, b)Nanostructures and Biological Applications,.c)Cultural Heritage, d)Magnetism and Superconductivity: Advanced Materials and Applications, d)Nanochemistry and Nanomaterials,Nanoelectronics, Photonics and Microsystems.

The main activities of the Magnetism and Superconductivity: Advanced Materials and Applications,programme are bulk permanent magnets, thin/thick films of magnetic, thermoelectric and superconducting materials, magnetorecording, hydrogen storage and hybrid nanostructures. . The group has managed more than 30 EC - FP-4, FP-5 FP6-FP7-projects such as Quantum Magnetic Dots (IHP), HIDEMAR (High Density Magnetic recording), HITEMAG (High Temperature Permanent Magnets), DYNAMICS (Dynamics of Thermoelectric Nanostructures) and IST- M2EMS(Magnetic MEMS), TERAMAGSTOR (Terabit magnetic storage media),NANOPERMAG (Nanostructured Permanent Magnets) and more recently the REFREEPERMAG project (www.refreepermag.-fp7.eu).