The Modification of Electrochemical Properties of Pd by its Alloying with Ru, Rh, and Pt: the Study of Ternary Systems

© 2020, Springer Science+Business Media, LLC, part of Springer Nature. Pd-rich Pd-Pt-Ru alloys, obtained by electrodeposition, were characterized by microscopic and electrochemical techniques at room temperature (298 K). The influence of the electrode potential and bulk composition on the amount of...

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Main Authors: Katarzyna Hubkowska, Suwaphid Themsirimongkon, Surin Saipanya, Mariusz Łukaszewski, Andrzej Czerwiński
Format: Journal
Published: 2020
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/68304
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-683042020-04-02T15:24:39Z The Modification of Electrochemical Properties of Pd by its Alloying with Ru, Rh, and Pt: the Study of Ternary Systems Katarzyna Hubkowska Suwaphid Themsirimongkon Surin Saipanya Mariusz Łukaszewski Andrzej Czerwiński Chemistry © 2020, Springer Science+Business Media, LLC, part of Springer Nature. Pd-rich Pd-Pt-Ru alloys, obtained by electrodeposition, were characterized by microscopic and electrochemical techniques at room temperature (298 K). The influence of the electrode potential and bulk composition on the amount of electrosorbed hydrogen was studied in 0.5 M H2SO4 aqueous solutions and compared with the behavior of Pd-Rh-Ru alloys under identical experimental conditions. The maximum hydrogen absorption capacities gradually decreased with increasing total amounts of both Pt and Ru in the alloy bulk. The effects of both Pd bulk content and the relative proportions between other components in Pd-Pt-Ru and Pd-Rh-Ru electrodes are also responsible for the changes in maximum hydrogen absorption capacity, the decrease in the potential of the alpha-beta phase transition, and the decrease in the absorption/desorption hysteresis. During voltammetric cycling in 0.5 M H2SO4 in the potential range − 0.1÷1.5 V vs. RHE (scan rate 0.1 V/s), the freshly obtained deposits became enriched with Pt due to electrodissolution of Ru and Pd, and the electrode morphology was also altered due to hydrogen electrosorption and surface oxidation. [Figure not available: see fulltext.] 2020-04-02T15:24:39Z 2020-04-02T15:24:39Z 2020-03-01 Journal 18685994 18682529 2-s2.0-85077681018 10.1007/s12678-019-00579-6 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85077681018&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/68304
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Chemistry
spellingShingle Chemistry
Katarzyna Hubkowska
Suwaphid Themsirimongkon
Surin Saipanya
Mariusz Łukaszewski
Andrzej Czerwiński
The Modification of Electrochemical Properties of Pd by its Alloying with Ru, Rh, and Pt: the Study of Ternary Systems
description © 2020, Springer Science+Business Media, LLC, part of Springer Nature. Pd-rich Pd-Pt-Ru alloys, obtained by electrodeposition, were characterized by microscopic and electrochemical techniques at room temperature (298 K). The influence of the electrode potential and bulk composition on the amount of electrosorbed hydrogen was studied in 0.5 M H2SO4 aqueous solutions and compared with the behavior of Pd-Rh-Ru alloys under identical experimental conditions. The maximum hydrogen absorption capacities gradually decreased with increasing total amounts of both Pt and Ru in the alloy bulk. The effects of both Pd bulk content and the relative proportions between other components in Pd-Pt-Ru and Pd-Rh-Ru electrodes are also responsible for the changes in maximum hydrogen absorption capacity, the decrease in the potential of the alpha-beta phase transition, and the decrease in the absorption/desorption hysteresis. During voltammetric cycling in 0.5 M H2SO4 in the potential range − 0.1÷1.5 V vs. RHE (scan rate 0.1 V/s), the freshly obtained deposits became enriched with Pt due to electrodissolution of Ru and Pd, and the electrode morphology was also altered due to hydrogen electrosorption and surface oxidation. [Figure not available: see fulltext.]
format Journal
author Katarzyna Hubkowska
Suwaphid Themsirimongkon
Surin Saipanya
Mariusz Łukaszewski
Andrzej Czerwiński
author_facet Katarzyna Hubkowska
Suwaphid Themsirimongkon
Surin Saipanya
Mariusz Łukaszewski
Andrzej Czerwiński
author_sort Katarzyna Hubkowska
title The Modification of Electrochemical Properties of Pd by its Alloying with Ru, Rh, and Pt: the Study of Ternary Systems
title_short The Modification of Electrochemical Properties of Pd by its Alloying with Ru, Rh, and Pt: the Study of Ternary Systems
title_full The Modification of Electrochemical Properties of Pd by its Alloying with Ru, Rh, and Pt: the Study of Ternary Systems
title_fullStr The Modification of Electrochemical Properties of Pd by its Alloying with Ru, Rh, and Pt: the Study of Ternary Systems
title_full_unstemmed The Modification of Electrochemical Properties of Pd by its Alloying with Ru, Rh, and Pt: the Study of Ternary Systems
title_sort modification of electrochemical properties of pd by its alloying with ru, rh, and pt: the study of ternary systems
publishDate 2020
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85077681018&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/68304
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