| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1292069 | Journal of Power Sources | 2006 | 6 Pages |
Abstract
The effect of discharge rate of direct methanol fuel cell (DMFC) on fuel efficiency was comparatively investigated using a DMFC single cell and a DMFC system. The results obtained from the single cell were used to model the DMFC system. Several semi-empirical equations were derived that relate discharge current, voltage, power output, energy density and fuel consumption for a nominal 25 W DMFC system. The decrease in fuel efficiency with decreased power output that is observed for the DMFC system is attributable to the increase of methanol crossover that can be observed for an individual cell. A DMFC system can achieve maximum energy density and fuel efficiency at an appropriately high level of power output.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Rongzhong Jiang, Deryn Chu,