Journal
CATALYSTS
Volume 11, Issue 1, Pages -Publisher
MDPI
DOI: 10.3390/catal11010092
Keywords
fuel cell; oxygen reduction reaction (ORR); metal organic frameworks (MOFs)
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The study tested nano-porous carbon structures derived from zeolitic imidazolate framework (ZIF-67) hybridized with MnO2 as cathode material for fuel cells. Characterization included XRD, SEM, and EDX, with cyclic voltammetry, EIS, and Chronoamperometry showing improved performance for oxygen reduction reaction, indicating potential for fuel cell applications.
In this study, zeolitic imidazolate framework (ZIF-67) derived nano-porous carbon structures that were further hybridized with MnO2 were tested for oxygen reduction reaction (ORR) as cathode material for fuel cells. The prepared electrocatalyst was characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and Energy Dispersive X-ray Analysis (EDX). Cyclic voltammetry was performed on these materials at different scan rates under dissolved oxygen in basic media (0.1 M KOH), inert and oxygen rich conditions to obtain their I-V curves. Electrochemical impedance spectroscopy (EIS) and Chronoamperometry was also performed to observe the materials' impedance and stability. We report improved performance of hybridized catalyst for ORR based on cyclic voltammetry and EIS results, which show that it can be a potential candidate for fuel cell applications.
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