Ionic Pool-Assisted Polyhedron Pt 2 FeCo/C Ordered Ternary Alloy as Outstanding Oxygen Reduction Reaction Electrocatalysts
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| Title: | Ionic Pool-Assisted Polyhedron Pt 2 FeCo/C Ordered Ternary Alloy as Outstanding Oxygen Reduction Reaction Electrocatalysts |
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| Authors: | Moorthi Lokanathan, Arunachalam Arulraj, Mangalaraja Ramalinga Viswanathan, Francisco V Herrera Diaz, Federico Tasca, Sadasivan Shaji, Miguel A. Gracia-Pinilla |
| Publication Year: | 2025 |
| Subject Terms: | Biophysics, Biochemistry, Medicine, Molecular Biology, Cancer, Infectious Diseases, Computational Biology, Space Science, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, transmission electron microscopy, times higher mass, stability test showed, ray diffraction pattern, oxygen reduction reaction, highly stable nature, electrochemical measurements indicated, 000 potential cycles, assisted polyhedron pt, 2 , superlattice peaks, study aims, specific activity, sluggish kinetics, salt condition, ionic pool, initial activity, crystal structure, commercial pt, centered tetragonal |
| Description: | This study aims to enhance the sluggish kinetics of the oxygen reduction reaction at the cathode of polymer electrolyte membrane fuel cells ordered polyhedron (OP) Pt 2 FeCo ternary alloy electrocatalytic nanoparticles on a high surface area carbon support were prepared in a highly polarized ionic pool (molten) salt condition. The formation of mainly 8 nm OP nanoparticles with a face-centered tetragonal (fct) crystal structure was confirmed by transmission electron microscopy and the presence of superlattice peaks in the X-ray diffraction pattern, respectively. X-ray photoelectron spectroscopy revealed the existence of Pt, Fe, and Co on the surface of the nanoparticles. Furthermore, the electrochemical measurements indicated that the OP Pt 2 FeCo/C nanoparticles expressed 11- and 17-times higher mass and specific activity, respectively, than commercial Pt/C. Finally, the stability test showed that even after 30,000 potential cycles, 89% of the initial activity of the OP Pt 2 FeCo/C ternary alloy electrocatalyst was retained, confirming its highly stable nature. |
| Document Type: | article in journal/newspaper |
| Language: | unknown |
| DOI: | 10.1021/acs.energyfuels.5c01310.s001 |
| Availability: | https://doi.org/10.1021/acs.energyfuels.5c01310.s001 https://figshare.com/articles/journal_contribution/Ionic_Pool-Assisted_Polyhedron_Pt_sub_2_sub_FeCo_C_Ordered_Ternary_Alloy_as_Outstanding_Oxygen_Reduction_Reaction_Electrocatalysts/28988074 |
| Rights: | CC BY-NC 4.0 |
| Accession Number: | edsbas.6AD47D10 |
| Database: | BASE |
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