Oxygen reduction on silver nanoparticles supported on carbide-derived carbons

Jonas Mart Linge; Heiki Erikson; Maido Merisalu; Leonard Matisen; Maike Käärik; Jaan Leis; Väino Sammelselg; Jaan Aruväli; Tiit Kaljuvee; Kaido Tammeveski

doi:10.1149/2.0711814jes

Oxygen reduction on silver nanoparticles supported on carbide-derived carbons

Jonas Mart Linge, Heiki Erikson, Maido Merisalu, Leonard Matisen, Maike Käärik, Jaan Leis, Väino Sammelselg, Jaan Aruväli, Tiit Kaljuvee, Kaido Tammeveski

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

In this work carbide-derived carbons (CDC) are used as support for silver nanoparticles. The catalysts are studied by scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and the electrocatalytic activity of Ag/CDC catalysts for oxygen reduction reaction (ORR) and hydrogen peroxide reduction in alkaline solution is investigated using the rotating disk electrode (RDE) method. The SEM analysis revealed that the average Ag particle size is 15 nm and these are uniformly distributed over the catalyst material. TGA measurements show that the metal content in the catalyst is close to the nominal value of 40 wt%. The RDE results revealed that the ORR proceeds via a four-electron pathway to form OH⁻. The analysis of RDE data revealed that the mass-activity of Ag/CDC was about twice higher than that of Ag catalysts supported on Vulcan carbon. The Tafel analysis suggests that the slow transfer of the first electron to O₂ molecule is the rate determining step for the ORR. The prepared Ag/CDC materials are also efficient catalysts for peroxide electroreduction.

Original language	English
Pages (from-to)	F1199-F1205
Journal	Journal of the Electrochemical Society
Volume	165
Issue number	14
DOIs	https://doi.org/10.1149/2.0711814jes
State	Published - 2018
Externally published	Yes

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title = "Oxygen reduction on silver nanoparticles supported on carbide-derived carbons",

abstract = "In this work carbide-derived carbons (CDC) are used as support for silver nanoparticles. The catalysts are studied by scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and the electrocatalytic activity of Ag/CDC catalysts for oxygen reduction reaction (ORR) and hydrogen peroxide reduction in alkaline solution is investigated using the rotating disk electrode (RDE) method. The SEM analysis revealed that the average Ag particle size is 15 nm and these are uniformly distributed over the catalyst material. TGA measurements show that the metal content in the catalyst is close to the nominal value of 40 wt%. The RDE results revealed that the ORR proceeds via a four-electron pathway to form OH−. The analysis of RDE data revealed that the mass-activity of Ag/CDC was about twice higher than that of Ag catalysts supported on Vulcan carbon. The Tafel analysis suggests that the slow transfer of the first electron to O2 molecule is the rate determining step for the ORR. The prepared Ag/CDC materials are also efficient catalysts for peroxide electroreduction.",

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year = "2018",

doi = "10.1149/2.0711814jes",

language = "English",

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pages = "F1199--F1205",

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T1 - Oxygen reduction on silver nanoparticles supported on carbide-derived carbons

AU - Linge, Jonas Mart

AU - Erikson, Heiki

AU - Merisalu, Maido

AU - Matisen, Leonard

AU - Käärik, Maike

AU - Leis, Jaan

AU - Sammelselg, Väino

AU - Aruväli, Jaan

AU - Kaljuvee, Tiit

AU - Tammeveski, Kaido

PY - 2018

Y1 - 2018

N2 - In this work carbide-derived carbons (CDC) are used as support for silver nanoparticles. The catalysts are studied by scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and the electrocatalytic activity of Ag/CDC catalysts for oxygen reduction reaction (ORR) and hydrogen peroxide reduction in alkaline solution is investigated using the rotating disk electrode (RDE) method. The SEM analysis revealed that the average Ag particle size is 15 nm and these are uniformly distributed over the catalyst material. TGA measurements show that the metal content in the catalyst is close to the nominal value of 40 wt%. The RDE results revealed that the ORR proceeds via a four-electron pathway to form OH−. The analysis of RDE data revealed that the mass-activity of Ag/CDC was about twice higher than that of Ag catalysts supported on Vulcan carbon. The Tafel analysis suggests that the slow transfer of the first electron to O2 molecule is the rate determining step for the ORR. The prepared Ag/CDC materials are also efficient catalysts for peroxide electroreduction.

AB - In this work carbide-derived carbons (CDC) are used as support for silver nanoparticles. The catalysts are studied by scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and the electrocatalytic activity of Ag/CDC catalysts for oxygen reduction reaction (ORR) and hydrogen peroxide reduction in alkaline solution is investigated using the rotating disk electrode (RDE) method. The SEM analysis revealed that the average Ag particle size is 15 nm and these are uniformly distributed over the catalyst material. TGA measurements show that the metal content in the catalyst is close to the nominal value of 40 wt%. The RDE results revealed that the ORR proceeds via a four-electron pathway to form OH−. The analysis of RDE data revealed that the mass-activity of Ag/CDC was about twice higher than that of Ag catalysts supported on Vulcan carbon. The Tafel analysis suggests that the slow transfer of the first electron to O2 molecule is the rate determining step for the ORR. The prepared Ag/CDC materials are also efficient catalysts for peroxide electroreduction.

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DO - 10.1149/2.0711814jes

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SN - 0013-4651

VL - 165

SP - F1199-F1205

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

IS - 14

ER -

Oxygen reduction on silver nanoparticles supported on carbide-derived carbons

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