Enhanced carbon monoxide tolerance of platinum nanoparticles synthesized through the flash joule heating method
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Carbon supported Pt nanoparticles were synthesized by the Flash Joule Heating Method
(FJHM). An aqueous solution of Pt precursor H2PtCl6·6H2O was added to Vulcan XC
72 carbon into a reactor, and then this mixture was submitted to 50 cycles of discharges
at 100 coulombs per discharge. Compared to a commercial Pt/C the X-ray Diffraction
(XRD) analysis revealed an increase in the interplanar spacing of the platinum crystal
lattice in the Pt/C catalyst prepared by FJHM, suggesting the emergence of structural
defects. Transmission electronic microscopy (TEM) images showed distinct step-like
features on the surface of FJHM-Pt/C, which may be indicative of structural defects,
confirming X-ray Diffraction results. The cyclic voltammogram of the FJHM-Pt/C
exhibited a significant increase in the oxidation pre-peak at 0.5 V compared to Pt/C
BASF. Using pure H2 as the fuel, the single proton exchange membrane fuel cell with
the commercial Pt/C as the anode catalyst showed a higher maximum power density
(MPD) than FJHM-Pt/C. In the presence of CO with H2 the FJHM-Pt/C catalyst
delivered a higher MPD compared to the cell with the commercial Pt/C. These results
indicate an enhanced CO tolerance, underscoring the potential advantages of the FJHM
preparation method.
Como referenciar
SOUZA, RODRIGO F.B.; NANDENHA, JULIO; OTUBO, LARISSA; ANTOLINI, ERMETE; OLIVEIRA NETO, ALMIR. Enhanced carbon monoxide tolerance of platinum nanoparticles synthesized through the flash joule heating method. SSRN, p. 1-14, 2023. DOI: 10.2139/ssrn.4642733. Disponível em: https://repositorio.ipen.br/handle/123456789/50062. Acesso em: 30 Jun 2026.
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