Study of PdNi bimetallic nanoparticles supported on carbon black for anion exchange membrane fuel cells.
Corressponding author's email:
tvmen@tvu.edu.vnKeywords:
Anion Exchange Membrane Fuel Cell, PdNi/C catalyst, Non-PGM catalyst, anode catalyst, Fuel cell performanceAbstract
Anion exchange membrane fuel cells (AEMFCs) have recently received significant attention due to their potential to use non-Pt catalysts. In this work, we developed bimetallic PdNi nanoparticles supported on Vulcan XC72R carbon black (PdNi/C) using a wet impregnation method applied to AEMFC anode electrodes. The PdNi/C electrocatalysts containing a similar metal content (40% by weight) over carbon content (60% by weight) with various Pd:Ni weight % ratios are synthesized and evaluated. The X-ray diffraction patterns confirm the successful preparation of PdNi/C electrocatalyst and the estimated Pd crystallite size is around 2.5 nm. In addition, the X-ray photoelectron spectroscopy also indicates that the coexistence of PdNi bimetallic structure is observed in the catalyst sample. A single H2/O2 AEMFC testing using a bimetallic PdNi/C anode catalyst and a commercial Pt/C cathode catalyst shows the highest peak power density of about 302 mW cm-2 for the Pd:Ni wt.% ratio of 50:50, which is consistent with cyclic voltammetry measurements. This result indicates that the PdNi/C catalyst has a high potential for using in AEMFCs.
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