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Nano-Porous Electro-Catalyst with Textured Surface Active Pd-Pt Islands for Efficient Methanol Tolerant Oxygen Reduction Reaction
- Source :
- ChemistrySelect. 2:7544-7552
- Publication Year :
- 2017
- Publisher :
- Wiley, 2017.
-
Abstract
- Herein, we report a simple and elegant aqueous synthesis of Pd100-xPtx (x=5, 10, 15 and 20) nano-porous structures (NPoS) derived from Pd100-xMn2x (x=5, 10, 15 and 20) nano-alloys. Pd100-xPtx/C NPoS exhibit enhanced oxygen reduction reaction (ORR) activity along with higher retention of figure of merit in the presence of methanol compared to HiSPEC Pt/C catalyst. The ORR mass and specific activity values of Pd100-xPtx/C NPoS are high and exceed the U.S. department of energy (DOE) 2017–2020 targets. The enhanced methanol tolerance and ORR activity of Pd100-xPtx/C NPoS is attributed to their unique surface active Pd−Pt islands on nano-porous Pd. Direct methanol fuel cell performance studies employed using Pd85Pt15/C NPoS as cathode material (0.4 mgPt/cm2) and HiSPEC PtRu/C NPs as anode material (0.2 mgPt/cm2) shows improved direct methanol fuel cell (DMFC) single cell activity at low Pt loading and the results are presented.
- Subjects :
- Aqueous solution
Rotating ring-disk electrode
Chemistry
Analytical chemistry
02 engineering and technology
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Catalysis
Anode
Direct methanol fuel cell
chemistry.chemical_compound
Chemical engineering
Figure of merit
Oxygen reduction reaction
Methanol
0210 nano-technology
Subjects
Details
- ISSN :
- 23656549
- Volume :
- 2
- Database :
- OpenAIRE
- Journal :
- ChemistrySelect
- Accession number :
- edsair.doi...........eeb1305b744574f7e3a3fab258380fd9