Abstract
This paper focused on the parametric investigation and optimization of passive direct ethanol alkaline fuel cells (DEAFCs). A mathematical model was developed to simulate cell performance behaviour with variations in the ethanol feed concentration, the alkaline feed concentration and the operating temperature. In addition, the crossover ethanol behaviour was examined for different operating temperatures and ethanol feed concentrations. The mathematical model was solved in Matlab Environment. The simulation results showed that the ethanol and alkaline feed concentration ratio was the key parameter affecting the cell performance. Although higher alkaline addition yielded better performance, it was not favourable for prolonged applications due to practical limitations, such as corrosion, electrode destruction and catalyst decomposition. The ethanol crossover effect was greatly affected by the operating temperature and the ethanol concentration. Higher operating temperatures and ethanol concentrations significantly increased the crossover rate and reduced the cell performance. Thus, with all of the limitations and constraints, the suggested conditions for adequate performance of passive DEAFCs systems are 4 M ethanol and 4 M OH – at T = 30 °C.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
