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A Novel Two-Step Electrochemical Deposition Method for Sn-Pd Electrocatalyst Synthesis for a Potential Application in Direct Ethanol Fuel Cells

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2023
Processes-2023..pdf (14.44Mb)
Authors
Lović, Jelena
Eraković Pantović, Sanja
Rakočević, Lazar
Ignjatović, Nenad L.
Dimitrijević, Silvana
Nikolić, Nebojša D.
Article (Published version)
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Abstract
Sn-Pd electrocatalysts with a constant atomic ratio of 60 at.% Sn‒40 at.% Pd suitable for potential application in direct ethanol fuel cells were synthesized using a novel two-step electrodeposition method. First, Sn was electrodeposited in various forms of dendrites, from spear-like and needle-like to individual fern-like dendrites to a network of intertwined fern-like dendrites, by varying the cathodic potential and then performing electrodeposition of Pd at a constant current density in the second step. A morphological and elemental analysis of Sn and Sn-Pd electrocatalysts was performed using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS) techniques, while the size of Sn dendrites was analyzed using the particle size distribution (PSD) method. Cyclic voltammetry (CV) and chronoamperometry were applied in order to study the catalytic behavior of Sn-Pd electrocatalysts in the ethanol oxidation reaction (E...OR), while CO stripping was used to estimate the antipoisoning capability of the electrocatalysts. The Sn surface morphology of the sub-layer was highly correlated with the electrocatalytic activity of the examined Sn-Pd electrocatalysts. The high activity it presented towards the EOR showed the suitability of the Sn-Pd electrocatalyst constructed from individual fern-like Sn dendrites as a sub-layer. Compared to Pd alone, this Sn-Pd catalyst showed more than 3 times higher activity and improved EOR kinetics. This enhancement in the catalytic activity of the Sn-Pd electrocatalysts is attributed to both the morphological characteristics of Sn as a sub-layer and the bifunctional effect.

Keywords:
electrodeposition / tin / dendrites / Sn-Pd electrocatalysts / SEM / EDS / PSD / XPS / ethanol oxidation reaction
Source:
Processes, 2023, 11, 1, 120-
Publisher:
  • MDPI
Funding / projects:
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM) (RS-200026)
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200175 (Institute of Technical Sciences of SASA, Belgrade) (RS-200175)
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200052 (Mining and Metallurgy Institute, Bor) (RS-200052)
  • AdCatFC - Advanced Catalysts for Low Temperature Fuel Cells: From Model System to Sustainable Catalysts (RS-7739802)

DOI: 10.3390/pr11010120

ISSN: 2227-9717

[ Google Scholar ]
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/5515
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  • Radovi istraživača / Researchers' publications
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Institution/Community
IHTM
TY  - JOUR
AU  - Lović, Jelena
AU  - Eraković Pantović, Sanja
AU  - Rakočević, Lazar
AU  - Ignjatović, Nenad L.
AU  - Dimitrijević, Silvana
AU  - Nikolić, Nebojša D.
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5515
AB  - Sn-Pd electrocatalysts with a constant atomic ratio of 60 at.% Sn‒40 at.% Pd suitable for 
potential application in direct ethanol fuel cells were synthesized using a novel two-step electrodeposition method. First, Sn was electrodeposited in various forms of dendrites, from spear-like and needle-like to individual fern-like dendrites to a network of intertwined fern-like dendrites, by varying the cathodic potential and then performing electrodeposition of Pd at a constant current 
density in the second step. A morphological and elemental analysis of Sn and Sn-Pd electrocatalysts was performed using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS) techniques, while the size of Sn dendrites was analyzed using the particle size distribution (PSD) method. Cyclic voltammetry (CV) and chronoamperometry were applied in order to study the catalytic behavior of Sn-Pd electrocatalysts in the ethanol oxidation reaction (EOR), while CO stripping was used to estimate the antipoisoning capability of the electrocatalysts. The Sn surface morphology of the sub-layer was highly correlated with the electrocatalytic activity of the examined Sn-Pd electrocatalysts. The high activity it presented towards the EOR showed the suitability of the Sn-Pd electrocatalyst constructed from individual fern-like Sn dendrites as a sub-layer. Compared to Pd alone, this Sn-Pd catalyst showed more than 3 times higher activity and improved EOR kinetics. This enhancement in the catalytic activity of the Sn-Pd electrocatalysts is attributed to both the morphological characteristics of Sn as a sub-layer and the bifunctional effect.
PB  - MDPI
T2  - Processes
T1  - A Novel Two-Step Electrochemical Deposition Method for  Sn-Pd Electrocatalyst Synthesis for a Potential Application in  Direct Ethanol Fuel Cells
VL  - 11
IS  - 1
SP  - 120
DO  - 10.3390/pr11010120
ER  - 
@article{
author = "Lović, Jelena and Eraković Pantović, Sanja and Rakočević, Lazar and Ignjatović, Nenad L. and Dimitrijević, Silvana and Nikolić, Nebojša D.",
year = "2023",
abstract = "Sn-Pd electrocatalysts with a constant atomic ratio of 60 at.% Sn‒40 at.% Pd suitable for 
potential application in direct ethanol fuel cells were synthesized using a novel two-step electrodeposition method. First, Sn was electrodeposited in various forms of dendrites, from spear-like and needle-like to individual fern-like dendrites to a network of intertwined fern-like dendrites, by varying the cathodic potential and then performing electrodeposition of Pd at a constant current 
density in the second step. A morphological and elemental analysis of Sn and Sn-Pd electrocatalysts was performed using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS) techniques, while the size of Sn dendrites was analyzed using the particle size distribution (PSD) method. Cyclic voltammetry (CV) and chronoamperometry were applied in order to study the catalytic behavior of Sn-Pd electrocatalysts in the ethanol oxidation reaction (EOR), while CO stripping was used to estimate the antipoisoning capability of the electrocatalysts. The Sn surface morphology of the sub-layer was highly correlated with the electrocatalytic activity of the examined Sn-Pd electrocatalysts. The high activity it presented towards the EOR showed the suitability of the Sn-Pd electrocatalyst constructed from individual fern-like Sn dendrites as a sub-layer. Compared to Pd alone, this Sn-Pd catalyst showed more than 3 times higher activity and improved EOR kinetics. This enhancement in the catalytic activity of the Sn-Pd electrocatalysts is attributed to both the morphological characteristics of Sn as a sub-layer and the bifunctional effect.",
publisher = "MDPI",
journal = "Processes",
title = "A Novel Two-Step Electrochemical Deposition Method for  Sn-Pd Electrocatalyst Synthesis for a Potential Application in  Direct Ethanol Fuel Cells",
volume = "11",
number = "1",
pages = "120",
doi = "10.3390/pr11010120"
}
Lović, J., Eraković Pantović, S., Rakočević, L., Ignjatović, N. L., Dimitrijević, S.,& Nikolić, N. D.. (2023). A Novel Two-Step Electrochemical Deposition Method for  Sn-Pd Electrocatalyst Synthesis for a Potential Application in  Direct Ethanol Fuel Cells. in Processes
MDPI., 11(1), 120.
https://doi.org/10.3390/pr11010120
Lović J, Eraković Pantović S, Rakočević L, Ignjatović NL, Dimitrijević S, Nikolić ND. A Novel Two-Step Electrochemical Deposition Method for  Sn-Pd Electrocatalyst Synthesis for a Potential Application in  Direct Ethanol Fuel Cells. in Processes. 2023;11(1):120.
doi:10.3390/pr11010120 .
Lović, Jelena, Eraković Pantović, Sanja, Rakočević, Lazar, Ignjatović, Nenad L., Dimitrijević, Silvana, Nikolić, Nebojša D., "A Novel Two-Step Electrochemical Deposition Method for  Sn-Pd Electrocatalyst Synthesis for a Potential Application in  Direct Ethanol Fuel Cells" in Processes, 11, no. 1 (2023):120,
https://doi.org/10.3390/pr11010120 . .

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