Structural Characterization and Functional Properties of Epoxy/Graphite Composites for Fuel Cell Bipolar Plates
| Název práce v češtině: | Strukturální charakterizace a funkční vlastnosti epoxidových/grafitových kompozitů pro bipolární desky palivových článků |
|---|---|
| Název v anglickém jazyce: | Structural Characterization and Functional Properties of Epoxy/Graphite Composites for Fuel Cell Bipolar Plates |
| Klíčová slova: | Polymerní kompozitní materialy|tepelně expandovaný grafit|interfacialní reakce|plynová propustnost|bipolární desky |
| Klíčová slova anglicky: | Polymer composites|thermally expanded graphite|interface reaction|electrical conductivity|gas permeability|bipolar plates |
| Akademický rok vypsání: | 2019/2020 |
| Typ práce: | disertační práce |
| Jazyk práce: | angličtina |
| Ústav: | Katedra fyziky povrchů a plazmatu (32-KFPP) |
| Vedoucí / školitel: | Yevheniia Lobko, Ph.D. |
| Řešitel: | skrytý - zadáno a potvrzeno stud. odd. |
| Datum přihlášení: | 20.09.2019 |
| Datum zadání: | 20.09.2019 |
| Datum potvrzení stud. oddělením: | 02.10.2019 |
| Datum a čas obhajoby: | 16.04.2025 09:00 |
| Datum odevzdání elektronické podoby: | 08.02.2025 |
| Datum odevzdání tištěné podoby: | 10.02.2025 |
| Datum proběhlé obhajoby: | 16.04.2025 |
| Oponenti: | prof. Stephane Marais |
| prof. Daniela Plachá, Ph.D. | |
| Konzultanti: | prof. RNDr. Vladimír Matolín, DrSc. |
| Zásady pro vypracování |
| Nowadays, bipolar plates play a significant role in fuel cells, important technology in renewable energy production.
In the doctoral dissertation, the synthesis of suitable polymers and carbon nanocomposites in terms of properties for use in bipolar plates in proton-exchange membrane fuel cells (PEMFCs) will be carried out. Resin/graphite nanocomposite bipolar plates will be prepared by bulk moulding process. Nano-sized graphite will be added as fillers to the polymer binder by forming a composite. Epoxy resin will be selected as a primary material since bulk moulding can be done easily with lower cost compared to other materials. Use of different structures of nanosized carbon as filler materials, e.g. expanded graphite, CNTs etc, will be checked in order to increase conductive characteristics, the most important parameter of bipolar plates. In order to characterize the composites, the morphology, electrical conductivity, flexural strength, toughness, hardness, porosity, thermal conductivity, and hydrogen permeation analyses will be investigated. The structure and good dispersion of fillers in the matrix of the prepared plate will be studied by electron microscopy (SEM, FIB-SEM, TEM) and X-ray diffraction (XRD). Corrosion resistivity will be studied by electrochemical AFM, RDE cyclic voltammetry and fuel cell accelerated degradation tests. FTIR will be used for testing polymerization process dynamics. The work will be performed in frame of the contractual partnership with LEANCAT s.r.o., fuel cell company. Expected skills: Candidate should graduate from physics, electrochemistry or chemical engineering. |
| Seznam odborné literatury |
| Will be specified by the supervisor |