Journal
CHEMELECTROCHEM
Volume 8, Issue 13, Pages 2442-2448Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/celc.202100314
Keywords
methanol electrooxidation; Pt nanoparticles; FeP; carbon nanotubes; fuel cells
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Funding
- National Natural Science Foundation of China [22008076]
- Guangdong Basic and Applied Basic Research Foundation [2019A1515110035]
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The study found that supporting Pt catalyst on FeP-decorated N-CNT can enhance the forward peak current density, showing 3.4 times higher than commercial Pt/C. The improved performance is attributed to the change in electronic state of Pt nanoparticles through the electronic interaction between Pt and FeP, which mitigates CO poisoning.
The electrooxidation of methanol - the anodic reaction of direct methanol fuel cells - suffers from slow kinetics. Here, we report an enhanced current density for a Pt catalyst supported on nitrogen-doped carbon nanotube (N-CNT) decorated FeP. X-ray photoelectron spectra show that the introduction of FeP increases the binding energy of the Pt nanoparticles. The results show that Pt/FeP15%/N-CNT displays a 3.4 times higher forward peak current density compared to commercial Pt/C. The improved performance is attributed to a change in the electronic state of the Pt nanoparticles through the electronic interaction between Pt and FeP, evidenced by the mitigated CO poisoning.
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