Composition dependent activity of PdAgNi alloy catalysts for formic acid electrooxidation
Copyright © 2018 Elsevier Inc. All rights reserved..
In the present study, the carbon supported Pd, PdAg and PdAgNi (Pd/C, PdAg/C and PdAgNi/C) electrocatalysts are prepared via NaBH4 reduction method at varying molar atomic ratio for formic acid electrooxidation. These as-prepared electrocatalysts are characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), inductively coupled plasma mass spectrometry (ICP-MS), N2 adsorption-desorption, and X-ray electron spectroscopy (XPS), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS), chronoamperometry (CA), and lineer sweep voltammetry (LSV). While Pd50Ag50/C exhibits the highest catalytic activity among the bimetallic electrocatalyst, it is observed that Pd70Ag20Ni10/C electrocatalysts have the best performance among the all electrocatalysts. Its maximum current density is about 1.92 times higher than that of Pd/C (0.675 mA cm-2). Also, electrochemical impedance spectroscopy (EIS), chronoamperometry (CA) and lineer sweep voltammetry (LSV) results are in a good agreement with CV results in terms of stability and electrocatalytic activity of Pd50Ag50/C and Pd70Ag20Ni10/C. The Pd70Ag20Ni10/C catalyst is believed to be a promising anode catalyst for the direct formic acid fuel cell.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2018 |
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| Erschienen: |
2018 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:532 |
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| Enthalten in: |
Journal of colloid and interface science - 532(2018) vom: 15. Dez., Seite 47-57 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Ulas, Berdan [VerfasserIn] |
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| Links: |
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| Themen: |
Ag |
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| Anmerkungen: |
Date Completed 17.09.2018 Date Revised 17.09.2018 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1016/j.jcis.2018.07.120 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM287166082 |
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| 245 | 1 | 0 | |a Composition dependent activity of PdAgNi alloy catalysts for formic acid electrooxidation |
| 264 | 1 | |c 2018 | |
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| 500 | |a Date Completed 17.09.2018 | ||
| 500 | |a Date Revised 17.09.2018 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a Copyright © 2018 Elsevier Inc. All rights reserved. | ||
| 520 | |a In the present study, the carbon supported Pd, PdAg and PdAgNi (Pd/C, PdAg/C and PdAgNi/C) electrocatalysts are prepared via NaBH4 reduction method at varying molar atomic ratio for formic acid electrooxidation. These as-prepared electrocatalysts are characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), inductively coupled plasma mass spectrometry (ICP-MS), N2 adsorption-desorption, and X-ray electron spectroscopy (XPS), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS), chronoamperometry (CA), and lineer sweep voltammetry (LSV). While Pd50Ag50/C exhibits the highest catalytic activity among the bimetallic electrocatalyst, it is observed that Pd70Ag20Ni10/C electrocatalysts have the best performance among the all electrocatalysts. Its maximum current density is about 1.92 times higher than that of Pd/C (0.675 mA cm-2). Also, electrochemical impedance spectroscopy (EIS), chronoamperometry (CA) and lineer sweep voltammetry (LSV) results are in a good agreement with CV results in terms of stability and electrocatalytic activity of Pd50Ag50/C and Pd70Ag20Ni10/C. The Pd70Ag20Ni10/C catalyst is believed to be a promising anode catalyst for the direct formic acid fuel cell | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Ag | |
| 650 | 4 | |a Alloy | |
| 650 | 4 | |a Electronic state | |
| 650 | 4 | |a Formic acid electrooxidation | |
| 650 | 4 | |a Impedance | |
| 650 | 4 | |a Ni | |
| 650 | 4 | |a Pd | |
| 650 | 4 | |a PdAgNi | |
| 700 | 1 | |a Caglar, Aykut |e verfasserin |4 aut | |
| 700 | 1 | |a Sahin, Ozlem |e verfasserin |4 aut | |
| 700 | 1 | |a Kivrak, Hilal |e verfasserin |4 aut | |
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| 773 | 1 | 8 | |g volume:532 |g year:2018 |g day:15 |g month:12 |g pages:47-57 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1016/j.jcis.2018.07.120 |3 Volltext |
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