Article 2022 · 5 atıf

Platinum decorated on ZIF-8 based nitrogen-doped hierarchical porous carbon composites for PEM fuel cells

Mohamud, Mohamed Ali, Yurtcan, Ayse Bayrakceken

Özet

The use of pyrolysis in the fabrication of nitrogen doped carbon (NC) composites derived from zeolitic imidazolate frameworks (ZIFs) is becoming a simple and popular method to prepare an outstanding catalyst support having different morphology and activity for oxygen reduction reaction (ORR) in the PEM fuel cells. In this study, different catalyst support materials (NC-t, where t is corresponding pyrolysis temperatures of 600 degrees C, 800 degrees C and 1000 degrees C) were successfully derived from the pyrolysis of pristine ZIF-8. The catalyst supports were physically characterized by XRD, XPS, SEM/ED-S, elemental analysis, FTIR, and Raman spectra. The prepared catalyst support materials were loaded with platinum nanoparticles and their ORR electrocatalyst properties were studied in single PEM fuel cell test station with polarization curves. In the fuel cell test, Pt/NC-800 degrees C composite catalyst showed the highest current density performance of 385 mA/cm2 at 0.6 V. The Pt/NC-800 degrees C composite showed the highest performance due to the higher graphitic N content which enhances the catalytic activity towards ORR.

Anahtar Kelimeler

PEMFC ZIF-8 MOF Nitrogen doping Electrocatalysis OXYGEN REDUCTION REACTION GRAPHENE OXIDE COMPOSITES CATALYST SUPPORT PYROLYSIS TRANSFORMATION HIGHLY EFFICIENT NANOPARTICLES PERFORMANCE ELECTROCATALYST FRAMEWORKS NANOCOMPOSITE

WoS Kategorileri

Chemistry, Multidisciplinary Physics, Condensed Matter

Sürdürülebilir Kalkınma Amaçları

Erişilebilir ve Temiz Enerji

Künye

Dergi: JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
Yıl: 2022
Cilt: 171
ISSN: 0022-3697
eISSN: 1879-2553
DOI: 10.1016/j.jpcs.2022.111030
WoS UID: WOS:000869447400005

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