Unknown

Dataset Information

0

Inexpensive Ipomoea aquatica Biomass-Modified Carbon Black as an Active Pt-Free Electrocatalyst for Oxygen Reduction Reaction in an Alkaline Medium.


ABSTRACT: The development of inexpensive and active Pt-free catalysts as an alternative to Pt-based catalysts for oxygen reduction reaction (ORR) is an essential prerequisite for fuel cell commercialization. In this paper, we report a strategy for the design of a new Fe-N/C electrocatalyst derived from the co-pyrolysis of Ipomoea aquatica biomass, carbon black (Vulcan XC-72R) and FeCl₃·6H₂O at 900 °C under nitrogen atmosphere. Electrochemical results show that the Fe-N/C catalyst exhibits higher electrocatalytic activity for ORR, longer durability and higher tolerance to methanol compared to a commercial Pt/C catalyst (40 wt %) in an alkaline medium. In particular, Fe-N/C presents an onset potential of 0.05 V (vs. Hg/HgO) for ORR in an alkaline medium, with an electron transfer number (n) of ~3.90, which is close to that of Pt/C. Our results confirm that the catalyst derived from I. aquatica and carbon black is a promising non-noble metal catalyst as an alternative to commercial Pt/C catalysts.

PROVIDER: S-EPMC5455408 | BioStudies | 2015-01-01

REPOSITORIES: biostudies

Similar Datasets

2014-01-01 | S-EPMC3985936 | BioStudies
1000-01-01 | S-EPMC5511131 | BioStudies
| S-EPMC6348107 | BioStudies
2020-01-01 | S-EPMC7040484 | BioStudies
2015-01-01 | S-EPMC5458862 | BioStudies
1000-01-01 | S-EPMC6343057 | BioStudies
2020-01-01 | S-EPMC6987278 | BioStudies
2017-01-01 | S-EPMC5459010 | BioStudies
2018-01-01 | S-EPMC6042067 | BioStudies
1000-01-01 | S-EPMC4658503 | BioStudies