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AuthorBin Yousaf, Ammar
AuthorMonnier, John R.
AuthorWeidner, John W.
AuthorHassan, Mohammad K.
AuthorZaidi, Syed Javaid
AuthorKasak, Peter
Available date2023-02-02T04:34:12Z
Publication Date2020
Publication NameSustainable Energy and Fuels
ResourceScopus
URIhttp://dx.doi.org/10.1039/d0se00671h
URIhttp://hdl.handle.net/10576/39382
AbstractThe economical cost of the catalyst material has remained a challenging task in traditional fuel cells (FCs) and in direct methanol fuel cells (DMFCs). However, replacement of noble metals with precious metal-free materials as catalysts has raised issues regarding their performance. Among them, cathodic catalysts have unresolved issues regarding working conditions, where they must be resistant to the effect of fuel crossover from the anode to maintain stable electrochemical behavior. We have focused on multiple factors to address these challenges and contribute to the field of DMFC electrocatalysis and have successfully lowered the high cost of the usual Pt catalyst by developing a non-precious metal-based Fe-N-C material as the cathode catalyst. Organic polymers in combination with C and N-rich sources of organic acids constitute the highly active Fe-N-C precursor byin situintercalation of Fe, facilitated by pyrolysis. The C and N-rich additives help generate abundant Fe-Nxand N-C active sites for enhanced oxygen reduction reaction (ORR) under acidic and alkaline conditions and show a negligible decrease in activity after 2000 scan cycles. Moreover, the active sites for ORR electrocatalysis showed excellent stability for methanol tolerance, thereby resulting in enhanced and durable performance for DMFCs as well as for PEMFC systems.
SponsorThe authors acknowledge financial support from USTC and Anhui Government Scholarship programmes.This work was also made possible by NPRP grant # 9 – 219-2-105 from the Qatar National Research Fund (A Member of The Qatar Foundation). The finding achieved herein is solely the responsibility of the authors.
Languageen
PublisherRoyal Society of Chemistry
SubjectCarbon nitride
Catalysis
Catalysts
Electrocatalysis
Electrodes
Electrolytic reduction
Iron compounds
Methanol
Methanol fuels
Organic polymers
Oxygen reduction reaction
Precious metals
Proton exchange membrane fuel cells (PEMFC)
Alkaline conditions
Catalyst material
Direct methanol fuel cells (DMFCs)
Electrochemical behaviors
Methanol tolerance
Methanol tolerant
Non-precious metals
Traditional fuels
Direct methanol fuel cells (DMFC)
catalyst
electrochemical method
fuel cell
iron
methanol
performance assessment
porous medium
TitleA precious-metal-free Fe-intercalated carbon nitride porous-network with enhanced activity for the oxygen reduction reaction and methanol-tolerant oxygen reduction reaction
TypeArticle
Pagination5050-5060
Issue Number10
Volume Number4
dc.accessType Abstract Only


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