We report the energy performance of a new platinum-free alkaline direct formate fuel cell, equipped with a commercial anion exchange membrane, a nanostructured Pd/C anode and a FeâCo/C cathode. The cell was investigated both at room temperature and at 60Â Â°C for the determination of the following parameters: (i) maximum power density, (ii) delivered energy, (iii) faradic (fuel conversion) and energy efficiency. These parameters show a dramatic dependence on fuel composition. The highest energy efficiency is obtained using high energy density fuel (4Â M KCOOH and 4Â M KOH) and with a maximum operating temperature of 60Â Â°C. This represents a key step in the progress of alkaline platinum-free DFFC technology, demonstrating their potential as power sources for portable electronic devices and remote power generation systems. For example, a fuel load of 750Â ml in a DFFC device operating at 60Â Â°C would be able to produce 90Â WÂ h of energy, that required to fully charge the battery of a laptop computer.
|Titolo:||Energy efficiency of platinum-free alkaline direct formate fuel cells|
|Appare nelle tipologie:||1.1 Articolo in rivista|
File in questo prodotto: