Preparation and Characterization of Electrochemical Deposition Cobalt Triantimonide (CoSb3) Thick Film: Effects of Polyvinyl Alcohol (PVA) as an Additive
| Autor: | Nuur Syahidah Sabran, Iman Aris Fadzallah, Takahito Ono, Suhana Mohd Said, Mohd Faizul Mohd Sabri |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science chemistry.chemical_element 02 engineering and technology Electrolyte engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry 01 natural sciences Polyvinyl alcohol Electronic Optical and Magnetic Materials chemistry.chemical_compound Chemical engineering chemistry 0103 physical sciences Materials Chemistry engineering Deposition (phase transition) Skutterudite Dendrite (metal) Electrical and Electronic Engineering Thin film 0210 nano-technology Cobalt |
| Zdroj: | Journal of Electronic Materials. 48:5003-5011 |
| ISSN: | 1543-186X 0361-5235 |
| DOI: | 10.1007/s11664-019-07295-3 |
| Popis: | A thick film of cobalt triantimonide (CoSb3) skutterudites was successfully synthesized via electrochemical deposition by using an electrolyte that contains antimony (Sb3+) and cobalt (Co2+) ions in a weak acid solution in the presence of polyvinyl alcohol (PVA) as an additive. The process was conducted under a potentiostatic condition of − 1000 mV versus Ag/AgCl at room temperature. Two hours (2 h) of electrochemical deposition produced a 13 μm assisted PVA CoSb3 thick film. In comparison, most studied electrochemical deposition of CoSb3 skutterudites thin films is in the thickness range of 700–800 nm. The morphological studies of the films appeared to have a cauliflower-like structure with a presence of fern-like dendrite for a non-PVA electrolyte due to the limitation of ion diffusion in the nucleation growth area. The absence of dendrite was observed in the assisted PVA films, which demonstrated an enhanced ion diffusion in the vicinity with a better stoichiometric ratio for Co:Sb of 1:3 thick film. |
| Databáze: | OpenAIRE |
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