Absence of a Relationship between Surface Conductivity and Electrochemical Rates: Redox-Active Monolayers on Si(211), Si(111), and Si(110)
Optimizing the kinetics of an electrode reaction is central to the design of devices whose function spans from sensing to energy conversion. Electrode kinetics depends strongly on electrode surface properties, but the search for optimal materials is often a trial-and-error process. Recent research h...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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AMER CHEMICAL SOC
2021
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| Subjects: | |
| Online Access: | http://purl.org/au-research/grants/arc/DP190100735 http://hdl.handle.net/20.500.11937/90473 |
| _version_ | 1848765383654244352 |
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| author | Zhang, Song Ferrie, Stuart Lyu, Xin Xia, Y. Darwish, Nadim Wang, Z. Ciampi, Simone |
| author_facet | Zhang, Song Ferrie, Stuart Lyu, Xin Xia, Y. Darwish, Nadim Wang, Z. Ciampi, Simone |
| author_sort | Zhang, Song |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Optimizing the kinetics of an electrode reaction is central to the design of devices whose function spans from sensing to energy conversion. Electrode kinetics depends strongly on electrode surface properties, but the search for optimal materials is often a trial-and-error process. Recent research has revealed a pronounced facet-dependent electrical conductivity for silicon, implicitly suggesting that rarely used crystallographic cuts of this technologically relevant material had been entirely overlooked for the fabrication of electrodes. By first protecting silicon from anodic decomposition through Si-C-bound organic monolayers, conductive atomic force microscopy demonstrates that conductivity decreases in the order (211) ≫ (110) > (111). However, charge-transfer rates for a model electrochemical reaction are similar on all these crystal orientations. These findings reveal the absence of a relationship between surface conductivity and kinetics of a surface-confined redox reaction and expand the range of silicon crystallographic orientations viable as electrode materials. |
| first_indexed | 2025-11-14T11:34:23Z |
| format | Journal Article |
| id | curtin-20.500.11937-90473 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:34:23Z |
| publishDate | 2021 |
| publisher | AMER CHEMICAL SOC |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-904732024-04-11T03:07:53Z Absence of a Relationship between Surface Conductivity and Electrochemical Rates: Redox-Active Monolayers on Si(211), Si(111), and Si(110) Zhang, Song Ferrie, Stuart Lyu, Xin Xia, Y. Darwish, Nadim Wang, Z. Ciampi, Simone Science & Technology Physical Sciences Technology Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science SINGLE-MOLECULE CONDUCTANCE QUASI-REVERSIBLE REACTION ELECTRON-TRANSFER FARADAIC IMPEDANCE CYCLIC VOLTAMMETRY AC POLAROGRAPHY TERMINATED MONOLAYERS AQUEOUS-SOLUTIONS SILICON SURFACES ALKYL MONOLAYERS Optimizing the kinetics of an electrode reaction is central to the design of devices whose function spans from sensing to energy conversion. Electrode kinetics depends strongly on electrode surface properties, but the search for optimal materials is often a trial-and-error process. Recent research has revealed a pronounced facet-dependent electrical conductivity for silicon, implicitly suggesting that rarely used crystallographic cuts of this technologically relevant material had been entirely overlooked for the fabrication of electrodes. By first protecting silicon from anodic decomposition through Si-C-bound organic monolayers, conductive atomic force microscopy demonstrates that conductivity decreases in the order (211) ≫ (110) > (111). However, charge-transfer rates for a model electrochemical reaction are similar on all these crystal orientations. These findings reveal the absence of a relationship between surface conductivity and kinetics of a surface-confined redox reaction and expand the range of silicon crystallographic orientations viable as electrode materials. 2021 Journal Article http://hdl.handle.net/20.500.11937/90473 10.1021/acs.jpcc.1c05023 English http://purl.org/au-research/grants/arc/DP190100735 http://purl.org/au-research/grants/arc/FT190100148 AMER CHEMICAL SOC fulltext |
| spellingShingle | Science & Technology Physical Sciences Technology Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science SINGLE-MOLECULE CONDUCTANCE QUASI-REVERSIBLE REACTION ELECTRON-TRANSFER FARADAIC IMPEDANCE CYCLIC VOLTAMMETRY AC POLAROGRAPHY TERMINATED MONOLAYERS AQUEOUS-SOLUTIONS SILICON SURFACES ALKYL MONOLAYERS Zhang, Song Ferrie, Stuart Lyu, Xin Xia, Y. Darwish, Nadim Wang, Z. Ciampi, Simone Absence of a Relationship between Surface Conductivity and Electrochemical Rates: Redox-Active Monolayers on Si(211), Si(111), and Si(110) |
| title | Absence of a Relationship between Surface Conductivity and Electrochemical Rates: Redox-Active Monolayers on Si(211), Si(111), and Si(110) |
| title_full | Absence of a Relationship between Surface Conductivity and Electrochemical Rates: Redox-Active Monolayers on Si(211), Si(111), and Si(110) |
| title_fullStr | Absence of a Relationship between Surface Conductivity and Electrochemical Rates: Redox-Active Monolayers on Si(211), Si(111), and Si(110) |
| title_full_unstemmed | Absence of a Relationship between Surface Conductivity and Electrochemical Rates: Redox-Active Monolayers on Si(211), Si(111), and Si(110) |
| title_short | Absence of a Relationship between Surface Conductivity and Electrochemical Rates: Redox-Active Monolayers on Si(211), Si(111), and Si(110) |
| title_sort | absence of a relationship between surface conductivity and electrochemical rates: redox-active monolayers on si(211), si(111), and si(110) |
| topic | Science & Technology Physical Sciences Technology Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science SINGLE-MOLECULE CONDUCTANCE QUASI-REVERSIBLE REACTION ELECTRON-TRANSFER FARADAIC IMPEDANCE CYCLIC VOLTAMMETRY AC POLAROGRAPHY TERMINATED MONOLAYERS AQUEOUS-SOLUTIONS SILICON SURFACES ALKYL MONOLAYERS |
| url | http://purl.org/au-research/grants/arc/DP190100735 http://purl.org/au-research/grants/arc/DP190100735 http://hdl.handle.net/20.500.11937/90473 |