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An impedance study of an operating direct methanol fuel cell
- Source :
- Journal of Power Sources. 195:2319-2330
- Publication Year :
- 2010
- Publisher :
- Elsevier BV, 2010.
-
Abstract
- An electrochemical impedance spectroscopy (EIS) technique was developed to characterize a direct methanol fuel cell (DMFC) under various operating conditions. A silver/silver chloride electrode was used as an external reference electrode to probe the anode and cathode during fuel cell operation and the results were compared to the conventional anode or cathode half-cell performance measurement using a hydrogen electrode as both the counter and reference electrode. The external reference was sensitive to the anode and the cathode as current was passed in a working DMFC. The impedance spectra and DMFC polarization curves were systematically investigated as a function of air and methanol flow rates, methanol concentration, temperature, and current density. Water flooding in the cathode was also examined.
- Subjects :
- Standard hydrogen electrode
Renewable Energy, Sustainability and the Environment
Chemistry
Analytical chemistry
Energy Engineering and Power Technology
Reference electrode
Cathode
law.invention
Anode
Dielectric spectroscopy
Direct methanol fuel cell
law
Electrode
Electrical and Electronic Engineering
Physical and Theoretical Chemistry
Silver chloride electrode
Subjects
Details
- ISSN :
- 03787753
- Volume :
- 195
- Database :
- OpenAIRE
- Journal :
- Journal of Power Sources
- Accession number :
- edsair.doi...........65f7bfa7669dbd37b1f44b5cbefdb2c8