Abstract
Herein, the ultrafine bimetallic alloy supported on nitrogen doped reduced graphene oxide (PtCu/NrGO) has been developed via wet-reflux strategy and applied as potential catalyst for electro-oxidation of liquid fuels in direct alcohol fuel cells (DAFCs). Possible conversion to PtCu/NrGO from the precursor materials was established in detail using transmission electron microscope (TEM), field emission scanning electron microscope (FE-SEM), X-ray diffraction (XRD), Raman spectroscopy and X-ray photo electron spectroscopy (XPS). The coupled structure of PtCu along with NrGO endowed an efficient catalyst with excellent catalytic activity and stability toward electro-oxidation of various alcohols compared to commercial Pt/C in acidic electrolyte. PtCu/NrGO exhibits the mass activity of 0.917, 0.620 and 0.495 A/mgPt toward the electro-oxidation of methanol, ethylene glycol and glycerol, about 6.8, 6.3 and 8.6 fold increment compared to Pt/C catalyst, respectively. Besides, PtCu/NrGO shows excellent durability with less activity decay even after 500 cycles.
| Original language | English |
|---|---|
| Pages (from-to) | 21769-21780 |
| Number of pages | 12 |
| Journal | International Journal of Hydrogen Energy |
| Volume | 44 |
| Issue number | 39 |
| Early online date | 17 Jul 2019 |
| DOIs | |
| Publication status | Published - 13 Aug 2019 |
| Externally published | Yes |
Bibliographical note
© 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.Funder
This work was supported by the Business for Core Technology Development between Industry, Academy, and Research Institute funded Jeonbuk Techno Park in 2015 (Grants No. 20150930-C1-033).Keywords
- NrGO
- PtCu
- Electrocatalytic activity
- Mass activity
- Alcohols oxidation