Evaluation of Pt40Pd60/MWCNT electrocatalyst as ethylene glycol-tolerant oxygen reduction cathodes
D Morales-Acosta, LG Arriaga… - Electrochemistry …, 2009 - Elsevier
Electrochemistry communications, 2009•Elsevier
Pt–Pd/MWCNT with Pt: Pd atomic ratio 40: 60 and Pt/MWCNT electrocatalyst were
synthesized and evaluated as oxygen reduction reaction (ORR) cathodes for Direct Ethylene
Glycol Fuel Cells (DEGFC) applications. As reference, a commercial Pt/C material was also
tested. We found that Pt–Pd/MWCNT has high tolerance capability to EG and higher
selectivity for the ORR compared to the Pt-alone materials. As a result, the shift in onset
potential for the ORR, Eonset, at Pt–Pd/MWCNT was considerably smaller than the shift at …
synthesized and evaluated as oxygen reduction reaction (ORR) cathodes for Direct Ethylene
Glycol Fuel Cells (DEGFC) applications. As reference, a commercial Pt/C material was also
tested. We found that Pt–Pd/MWCNT has high tolerance capability to EG and higher
selectivity for the ORR compared to the Pt-alone materials. As a result, the shift in onset
potential for the ORR, Eonset, at Pt–Pd/MWCNT was considerably smaller than the shift at …
Pt–Pd/MWCNT with Pt:Pd atomic ratio 40:60 and Pt/MWCNT electrocatalyst were synthesized and evaluated as oxygen reduction reaction (ORR) cathodes for Direct Ethylene Glycol Fuel Cells (DEGFC) applications. As reference, a commercial Pt/C material was also tested. We found that Pt–Pd/MWCNT has high tolerance capability to EG and higher selectivity for the ORR compared to the Pt-alone materials. As a result, the shift in onset potential for the ORR, Eonset, at Pt–Pd/MWCNT was considerably smaller than the shift at Pt/MWCNT or Pt/C. The average particle size (from XRD) was 3.5 and 4nm for Pt/MWCNT and Pt–Pd/MWCNT, respectively. A moderate degree of alloying was determined for the Pt–Pd material. An advantageous application of Pt–Pd electrocatalysts should be in DEGFCs.
Elsevier
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