ResearchSpace

Electroformation of Pd-modified thin film electrocatalysts using E-ALD technique

Show simple item record

dc.contributor.author Mkhohlakali, AC
dc.contributor.author Fuku, X
dc.contributor.author Modibedi, Remegia M
dc.contributor.author Khotseng, LE
dc.contributor.author Mathe, Mkhulu K
dc.date.accessioned 2022-05-04T19:48:08Z
dc.date.available 2022-05-04T19:48:08Z
dc.date.issued 2021-07
dc.identifier.citation Mkhohlakali, A., Fuku, X., Modibedi, R.M., Khotseng, L. & Mathe, M.K. 2021. Electroformation of Pd-modified thin film electrocatalysts using E-ALD technique. <i>Electroanalysis, 33.</i> http://hdl.handle.net/10204/12389 en_ZA
dc.identifier.issn 1040-0397
dc.identifier.issn 1521-4109
dc.identifier.uri https://doi.org/10.1002/elan.202100040
dc.identifier.uri http://hdl.handle.net/10204/12389
dc.description.abstract Electrochemical atomic layer deposition was used to form bimetallic (BiPd, CuPd) and trimetallic (CuBiPd) thin films via surface-confined reactions. Pd thin films were characterized by cyclic voltammetry, scanning electron microscopy (SEM) and the alloy formation with preferred Au/Pd(111) orientation was confirmed by XRD. AFM revealed uniform grain distribution, with 3D islands growing on CuBiPd. EDX verified the presence of all deposited elements. Compared to other prepared catalysts, CuBiPd catalyst showed higher activity and stability towards the ethanol oxidation reaction (EOR), as confirmed by the peak current and onset potential trends, respectively: CuBiPd (1.35 mA, −0.450 V)>CuPd (0.6016 mA, −0.442 V)>BiPd (0.275 mA, −0.384 V)>Pd (0.186 mA, −0.350 V). The EOR current on CuBiPd improved by 2.5 folds relative to Pd. The results show that CuBiPd electrocatalyst is a promising material for EOR with enhanced catalytic properties for direct ethanol fuel cell. en_US
dc.format Abstract en_US
dc.language.iso en en_US
dc.relation.uri https://analyticalsciencejournals.onlinelibrary.wiley.com/doi/10.1002/elan.202100040 en_US
dc.source Electroanalysis, 33 en_US
dc.subject Ethanol en_US
dc.subject Foreign adatoms en_US
dc.subject Modified Pd en_US
dc.subject Oxidation reaction en_US
dc.subject Reductive underpotential deposition en_US
dc.subject Surface limited redox replacement en_US
dc.title Electroformation of Pd-modified thin film electrocatalysts using E-ALD technique en_US
dc.type Article en_US
dc.description.pages 1746-1760 en_US
dc.description.note © 2021 Wiley-VC. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website: https://analyticalsciencejournals.onlinelibrary.wiley.com/doi/10.1002/elan.202100040 en_US
dc.description.cluster Smart Places en_US
dc.description.impactarea Electrochemical Energy en_US
dc.identifier.apacitation Mkhohlakali, A., Fuku, X., Modibedi, R. M., Khotseng, L., & Mathe, M. K. (2021). Electroformation of Pd-modified thin film electrocatalysts using E-ALD technique. <i>Electroanalysis, 33</i>, http://hdl.handle.net/10204/12389 en_ZA
dc.identifier.chicagocitation Mkhohlakali, AC, X Fuku, Remegia M Modibedi, LE Khotseng, and Mkhulu K Mathe "Electroformation of Pd-modified thin film electrocatalysts using E-ALD technique." <i>Electroanalysis, 33</i> (2021) http://hdl.handle.net/10204/12389 en_ZA
dc.identifier.vancouvercitation Mkhohlakali A, Fuku X, Modibedi RM, Khotseng L, Mathe MK. Electroformation of Pd-modified thin film electrocatalysts using E-ALD technique. Electroanalysis, 33. 2021; http://hdl.handle.net/10204/12389. en_ZA
dc.identifier.ris TY - Article AU - Mkhohlakali, AC AU - Fuku, X AU - Modibedi, Remegia M AU - Khotseng, LE AU - Mathe, Mkhulu K AB - Electrochemical atomic layer deposition was used to form bimetallic (BiPd, CuPd) and trimetallic (CuBiPd) thin films via surface-confined reactions. Pd thin films were characterized by cyclic voltammetry, scanning electron microscopy (SEM) and the alloy formation with preferred Au/Pd(111) orientation was confirmed by XRD. AFM revealed uniform grain distribution, with 3D islands growing on CuBiPd. EDX verified the presence of all deposited elements. Compared to other prepared catalysts, CuBiPd catalyst showed higher activity and stability towards the ethanol oxidation reaction (EOR), as confirmed by the peak current and onset potential trends, respectively: CuBiPd (1.35 mA, −0.450 V)>CuPd (0.6016 mA, −0.442 V)>BiPd (0.275 mA, −0.384 V)>Pd (0.186 mA, −0.350 V). The EOR current on CuBiPd improved by 2.5 folds relative to Pd. The results show that CuBiPd electrocatalyst is a promising material for EOR with enhanced catalytic properties for direct ethanol fuel cell. DA - 2021-07 DB - ResearchSpace DP - CSIR J1 - Electroanalysis, 33 KW - Ethanol KW - Foreign adatoms KW - Modified Pd KW - Oxidation reaction KW - Reductive underpotential deposition KW - Surface limited redox replacement LK - https://researchspace.csir.co.za PY - 2021 SM - 1040-0397 SM - 1521-4109 T1 - Electroformation of Pd-modified thin film electrocatalysts using E-ALD technique TI - Electroformation of Pd-modified thin film electrocatalysts using E-ALD technique UR - http://hdl.handle.net/10204/12389 ER - en_ZA
dc.identifier.worklist 25557 en_US


Files in this item

Thumbnail
Name: Mkhohlakali_2021_ ...
Size: 95.37Kb
Format: PDF
Description: Abstract
View/Open

This item appears in the following Collection(s)

Show simple item record