Concentration effect on properties of Pt-NiOx nanocompounds converted from mixed chloroplatinic acid and nickel acetate precursor films using an atmospheric-pressure plasma jet
| Autor: | Tzu-Ming Huang, I-Chun Cheng, Jian-Zhang Chen, Cheng-Che Hsu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Tafel equation Materials science General Physics and Astronomy chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Electrochemistry Tin oxide 01 natural sciences law.invention Catalysis Dielectric spectroscopy chemistry.chemical_compound Nickel Chemical engineering chemistry law 0103 physical sciences Calcination 0210 nano-technology Chloroplatinic acid |
| Zdroj: | Journal of Applied Physics. 128:043302 |
| ISSN: | 1089-7550 0021-8979 |
| DOI: | 10.1063/5.0012622 |
| Popis: | A direct current-pulse nitrogen atmospheric-pressure plasma jet (APPJ) is used to convert Pt-NiOx nanocompounds from liquid precursor films consisting of a mixture of chloroplatinic acid and nickel acetate. The Pt-NiOx nanoparticles are well-distributed on the fluorine-doped tin oxide (FTO) glass substrates. X-ray photoelectron spectroscopy results indicate that the reaction product mainly contains metallic Pt and oxidized Ni. Electrochemical impedance spectroscopy and Tafel experiments reveal an improvement in electrochemical catalytic effects. The APPJ-processed Pt-NiOx nanocompounds on FTO glass substrates are used as the counter electrodes (CEs) of dye-sensitized solar cells (DSSCs). J − V curves indicate that DSSCs with 5-s APPJ-processed Pt-NiOx CEs showed significantly improved performance. The sample properties become stable after ∼45 s of APPJ calcination. Precursor solutions with three different mole ratios of chloroplatinic acid and nickel acetate are investigated. With the addition of an adequate amount of oxidized nickel, the transfer charge current density and electrochemical catalytic effects are enhanced. |
| Databáze: | OpenAIRE |
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