Thesis supervisor: László Péter
Location of studies (in Hungarian): ELKH Wigner Fizikai Kutatóközpont Abbreviation of location of studies: ELKH
Description of the research topic:
A number of electrochemical techniques are know whose application leads to either discontinuous or porous materials. The list of such techniques based on bottom-up methods includes the dynamic bubble templated electrodeposition, electroplating at relatively high current densities with dendritic deposit formation and templated deposition followed by the template removal. Concerning the top-down methods, electrochemical dealloying and template-forming methods are the most common. Each above mentioned technique has its characteristic pore (feature) size that do not always fit to a specific application. However, a thoughtful combination of various techniques is envisioned to widen these limits.
The work to be carried out aims at the achievement of the following primary goals:
A, Elaboration of electrochemical techniques for the electrodeposition of self-supporting porous materials with a tuneable pore size. The following novel electrodeposition approaches are to be exemplified:
– Substrate patterning with either foreign metal seeds or segments of electrodeposited polymers, which is followed by electrodeposition of metals on the uncovered areas of the substrate;
– Polymer template formation with spin coating by intentionally producing deficient layers / partly coalescent covered areas / separated polymer dots.
– Combined electrodeposition of metals and polymers for providing a local hindrance of metal deposition;
– Pulse plating combined with hydrogen bubble templating.
B, Investigation of the porosity and the pore wall structure of the deposits obtained with the above listed methods.
C, Testing the mechanical and thermal stability of the porous electrodeposited metals obtained with the newly established experimental techniques.
As an application-oriented goal, energy storage-oriented experiments are to be targeted with the newly produced porous materials, such as the study of supercapaciting behaviour and operation as electrodes in rechargeable batteries.
Deadline for application: 2023-01-12
2024. IV. 17. ODT ülés Az ODT következő ülésére 2024. június 14-én, pénteken 10.00 órakor kerül sor a Semmelweis Egyetem Szenátusi termében (Bp. Üllői út 26. I. emelet).
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