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Air Breathing Cathodes for Microbial Fuel Cell using Mn-, Fe-, Co- and Ni-containing Platinum Group Metal-free Catalysts

View Article: PubMed Central - PubMed

ABSTRACT

PGM-free catalysts were synthesized using sacrificial support method.

Catalysts were made with Fe, Co, Mn and Ni as metal center and AAPyr as precursor.

Fe-catalysts showed highest performance for ORR in microbial fuel cell.

Increase in solution conductivity led to a maximum power of 482 ± 5 μWcm−2

Increase in solution conductivity led to a maximum power of 482 ± 5 μWcm−2

No MeSH data available.


Voltage recorded during the durability tests.
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fig0030: Voltage recorded during the durability tests.

Mentions: Duplicate MFCs were run for over one month and the voltage was recorded continuously. The average values of the recorded voltage are here presented (Fig. 6) while the duplicate voltage for MFC having different cathode catalyst is presented in the Supporting Information (Fig. S4). It can be noticed that generally Fe-AAPyr outperformed the other cathode catalysts along the entire experimentation (Fig. 6). Similarly, after Fe-AAPyr, Co-AAPyr had higher voltage compared to Ni-AAPyr and Mn-AAPyr. The latter was the worst performing metal-based catalyst during the durability test. All the M-AAPyr had higher performances compared to AC cathodes MFCs (Fig. 6). Interestingly, the cycles of M-AAPyr cathode catalysts MFCs were shorter than the cycles of AC cathode MFC probably indicating a faster consumption of fuel due to higher voltage/current generated (Fig. 6).


Air Breathing Cathodes for Microbial Fuel Cell using Mn-, Fe-, Co- and Ni-containing Platinum Group Metal-free Catalysts
Voltage recorded during the durability tests.
© Copyright Policy - CC BY
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5384433&req=5

fig0030: Voltage recorded during the durability tests.
Mentions: Duplicate MFCs were run for over one month and the voltage was recorded continuously. The average values of the recorded voltage are here presented (Fig. 6) while the duplicate voltage for MFC having different cathode catalyst is presented in the Supporting Information (Fig. S4). It can be noticed that generally Fe-AAPyr outperformed the other cathode catalysts along the entire experimentation (Fig. 6). Similarly, after Fe-AAPyr, Co-AAPyr had higher voltage compared to Ni-AAPyr and Mn-AAPyr. The latter was the worst performing metal-based catalyst during the durability test. All the M-AAPyr had higher performances compared to AC cathodes MFCs (Fig. 6). Interestingly, the cycles of M-AAPyr cathode catalysts MFCs were shorter than the cycles of AC cathode MFC probably indicating a faster consumption of fuel due to higher voltage/current generated (Fig. 6).

View Article: PubMed Central - PubMed

ABSTRACT

PGM-free catalysts were synthesized using sacrificial support method.

Catalysts were made with Fe, Co, Mn and Ni as metal center and AAPyr as precursor.

Fe-catalysts showed highest performance for ORR in microbial fuel cell.

Increase in solution conductivity led to a maximum power of 482 ± 5 μWcm−2

Increase in solution conductivity led to a maximum power of 482 ± 5 μWcm−2

No MeSH data available.