Theoretical and experimental studies on the electrodeposited nanocrystalline Ag coatings from a novel Ag2O-based non-cyanide electrolyte
Functional silver coatings have been widely applied in fields of electrochemical energy conversion systems,electronics industry and antibacterial materials, and exploiting new non-cyanide silver electroplating bath systemis of great significance for promoting the application. In this work, a new typ...
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| Veröffentlicht in: | Journal of industrial and engineering chemistry (Seoul, Korea) Jg. 131; S. 432 - 440 |
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| Hauptverfasser: | , , , , , , , , |
| Format: | Journal Article |
| Sprache: | Englisch |
| Veröffentlicht: |
한국공업화학회
01.03.2024
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| Schlagworte: | |
| ISSN: | 1226-086X, 1876-794X |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | Functional silver coatings have been widely applied in fields of electrochemical energy conversion systems,electronics industry and antibacterial materials, and exploiting new non-cyanide silver electroplating bath systemis of great significance for promoting the application. In this work, a new type of cyanide-free electrodepositedsilver (Ag) system was developed with Ag2O as the main salt, 5,5-dimethyl hydantoin (DMH) as thesilver ion complexing agent and potassium carbonate as the conductive salt. Comprehensive quantum chemicalcalculations demonstrate that the new silver-based system has the solvation structure of [Ag(C5H7N2O2)2] (5N(2)-Ag). To further, roles of additives combination (L-cysteine and 2,2-bipyridine) and their fundamentalmechanism on the silver electrodeposition process was further investigated by electrochemical tests and theoreticalcalculations. First-Principles calculation and simulation of molecular dynamics reveal that this additivecouple have coordination interactions with Ag+, while strong adsorption on the Ag (111) surface. SEM and XRDanalyses showed that the combination of L-cysteine and 2,2-bipyridine achieved an ideal silver coating with goodmorphology and a low grain size of 22.1 nm, verifying the great potential of the novel system to prepare highqualitysilver coatings. KCI Citation Count: 0 |
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| ISSN: | 1226-086X 1876-794X |
| DOI: | 10.1016/j.jiec.2023.10.046 |