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Alkaline Ethanol Oxidation Reaction on Carbon Supported Ternary PdNiBi Nanocatalyst using Modified Instant Reduction Synthesis Method
Direct ethanol fuel cells (DEFC) still lack active and efficient electrocatalysts for the alkaline ethanol oxidation reaction (EOR). In this work, a new instant reduction synthesis method was developed to prepare carbon supported ternary PdNiBi nanocatalysts with improved EOR activity. Synthesized c...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer US
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7683445/ https://www.ncbi.nlm.nih.gov/pubmed/33269032 http://dx.doi.org/10.1007/s12678-019-00577-8 |
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author | Cermenek, Bernd Genorio, Boštjan Winter, Thomas Wolf, Sigrid Connell, Justin G. Roschger, Michaela Letofsky-Papst, Ilse Kienzl, Norbert Bitschnau, Brigitte Hacker, Viktor |
author_facet | Cermenek, Bernd Genorio, Boštjan Winter, Thomas Wolf, Sigrid Connell, Justin G. Roschger, Michaela Letofsky-Papst, Ilse Kienzl, Norbert Bitschnau, Brigitte Hacker, Viktor |
author_sort | Cermenek, Bernd |
collection | PubMed |
description | Direct ethanol fuel cells (DEFC) still lack active and efficient electrocatalysts for the alkaline ethanol oxidation reaction (EOR). In this work, a new instant reduction synthesis method was developed to prepare carbon supported ternary PdNiBi nanocatalysts with improved EOR activity. Synthesized catalysts were characterized with a variety of structural and compositional analysis techniques in order to correlate their morphology and surface chemistry with electrochemical performance. The modified instant reduction synthesis results in well-dispersed, spherical Pd(85)Ni(10)Bi(5) nanoparticles on Vulcan XC72R support (Pd(85)Ni(10)Bi(5)/C((II-III))), with sizes ranging from 3.7 ± 0.8 to 4.7 ± 0.7 nm. On the other hand, the common instant reduction synthesis method leads to significantly agglomerated nanoparticles (Pd(85)Ni(10)Bi(5)/C((I))). EOR activity and stability of these three different carbon supported PdNiBi anode catalysts with a nominal atomic ratio of 85:10:5 were probed via cyclic voltammetry and chronoamperometry using the rotating disk electrode method. Pd(85)Ni(10)Bi(5)/C((II)) showed the highest electrocatalytic activity (150 mA⋅cm(−2); 2678 mA⋅mg(−1)) with low onset potential (0.207 V) for EOR in alkaline medium, as compared to a commercial Pd/C and to the other synthesized ternary nanocatalysts Pd(85)Ni(10)Bi(5)/C((I)) and Pd(85)Ni(10)Bi(5)/C((III)). This new synthesis approach provides a new avenue to developing efficient, carbon supported ternary nanocatalysts for future energy conversion devices. [Figure: see text] ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s12678-019-00577-8) contains supplementary material, which is available to authorized users. |
format | Online Article Text |
id | pubmed-7683445 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Springer US |
record_format | MEDLINE/PubMed |
spelling | pubmed-76834452020-11-30 Alkaline Ethanol Oxidation Reaction on Carbon Supported Ternary PdNiBi Nanocatalyst using Modified Instant Reduction Synthesis Method Cermenek, Bernd Genorio, Boštjan Winter, Thomas Wolf, Sigrid Connell, Justin G. Roschger, Michaela Letofsky-Papst, Ilse Kienzl, Norbert Bitschnau, Brigitte Hacker, Viktor Electrocatalysis (N Y) Original Research Direct ethanol fuel cells (DEFC) still lack active and efficient electrocatalysts for the alkaline ethanol oxidation reaction (EOR). In this work, a new instant reduction synthesis method was developed to prepare carbon supported ternary PdNiBi nanocatalysts with improved EOR activity. Synthesized catalysts were characterized with a variety of structural and compositional analysis techniques in order to correlate their morphology and surface chemistry with electrochemical performance. The modified instant reduction synthesis results in well-dispersed, spherical Pd(85)Ni(10)Bi(5) nanoparticles on Vulcan XC72R support (Pd(85)Ni(10)Bi(5)/C((II-III))), with sizes ranging from 3.7 ± 0.8 to 4.7 ± 0.7 nm. On the other hand, the common instant reduction synthesis method leads to significantly agglomerated nanoparticles (Pd(85)Ni(10)Bi(5)/C((I))). EOR activity and stability of these three different carbon supported PdNiBi anode catalysts with a nominal atomic ratio of 85:10:5 were probed via cyclic voltammetry and chronoamperometry using the rotating disk electrode method. Pd(85)Ni(10)Bi(5)/C((II)) showed the highest electrocatalytic activity (150 mA⋅cm(−2); 2678 mA⋅mg(−1)) with low onset potential (0.207 V) for EOR in alkaline medium, as compared to a commercial Pd/C and to the other synthesized ternary nanocatalysts Pd(85)Ni(10)Bi(5)/C((I)) and Pd(85)Ni(10)Bi(5)/C((III)). This new synthesis approach provides a new avenue to developing efficient, carbon supported ternary nanocatalysts for future energy conversion devices. [Figure: see text] ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s12678-019-00577-8) contains supplementary material, which is available to authorized users. Springer US 2020-01-03 2020 /pmc/articles/PMC7683445/ /pubmed/33269032 http://dx.doi.org/10.1007/s12678-019-00577-8 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Original Research Cermenek, Bernd Genorio, Boštjan Winter, Thomas Wolf, Sigrid Connell, Justin G. Roschger, Michaela Letofsky-Papst, Ilse Kienzl, Norbert Bitschnau, Brigitte Hacker, Viktor Alkaline Ethanol Oxidation Reaction on Carbon Supported Ternary PdNiBi Nanocatalyst using Modified Instant Reduction Synthesis Method |
title | Alkaline Ethanol Oxidation Reaction on Carbon Supported Ternary PdNiBi Nanocatalyst using Modified Instant Reduction Synthesis Method |
title_full | Alkaline Ethanol Oxidation Reaction on Carbon Supported Ternary PdNiBi Nanocatalyst using Modified Instant Reduction Synthesis Method |
title_fullStr | Alkaline Ethanol Oxidation Reaction on Carbon Supported Ternary PdNiBi Nanocatalyst using Modified Instant Reduction Synthesis Method |
title_full_unstemmed | Alkaline Ethanol Oxidation Reaction on Carbon Supported Ternary PdNiBi Nanocatalyst using Modified Instant Reduction Synthesis Method |
title_short | Alkaline Ethanol Oxidation Reaction on Carbon Supported Ternary PdNiBi Nanocatalyst using Modified Instant Reduction Synthesis Method |
title_sort | alkaline ethanol oxidation reaction on carbon supported ternary pdnibi nanocatalyst using modified instant reduction synthesis method |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7683445/ https://www.ncbi.nlm.nih.gov/pubmed/33269032 http://dx.doi.org/10.1007/s12678-019-00577-8 |
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