Characterization and basic research investigations at PEFC electrodes and MEA
- Institut fuer Technische Thermodynamik, Stuttgart (Germany)
For the study of electrochemical and transport mechanisms in polymere electrolyte fuel cells (PEFC) electrodes and for a further development of PEFC electrodes it is important to characterize these electrodes. The characterization of the electrodes was performed by electrochemical analytical as well as physical methods on both single electrodes and electrode-membrane assemblies (NEA). In addition to voltage-current characteristics the electrodes were electrochemically measured by cyclic voltammetry, electrochemical impedance spectroscopy and chronopotentiometry. To determine the pore systems nitrogen adsorption and mercury porosimetry were used. Chemical composition and microstructure of the electrodes were studied by surface science methods like scanning electron microscopy or X-ray induced photoelectron spectroscopy. The results of characterization are the base for theoretical simulation of fuel cells and fuel cell stacks.
- Research Organization:
- Fuel Cell Seminar Organizing Committee (United States)
- OSTI ID:
- 460318
- Report Number(s):
- CONF-961107--Absts.; ON: TI97001494
- Country of Publication:
- United States
- Language:
- English
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