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https://dspace.ctu.edu.vn/jspui/handle/123456789/23206
Title: | Synthesis of platinum/reduced graphene oxide composite for cathode in dye-sensitized solar cells |
Authors: | Nguyen, Duc Thinh Vo, An Le Le, Tran Trung Nghia Le, Van Cuong Nguyen, Thi Tra My Nguyen, Thi Kim Tuyet Nguyen, Thai Hoang Nguyen, Huu Hieu |
Keywords: | Platinium Graphene oxide Composite Dye sensitized solar cell. Cathode |
Issue Date: | 2019 |
Series/Report no.: | Vietnam Journal of Chemistry;No 57(04) .- Page.411-417 |
Abstract: | Platinum/reduced graphene oxide (Pt/rGO) composite materials with different mass ratios were fabricated by thermal decomposition method from H₂PiCl₆ and reduce graphene oxide (rGO) as precursors. Pt/rGO composites were used to fabricate Pt/rGO thin film cathodes by using the screen printing technology. The electrochemical properties of the fabricated cathodes were measured using the cyclic voltammetry method. Dye-sensitized solar cells (DSSCs) were assembled from fabricated cathodes and were measured the performances by current density-voltage (J-V) curves and electrochemical impedance spectroscopy (EIS). The results showed the appropriate replacement amount rGO with Pt was 40 %, with the efficiency of 4.73 %, which was higher than that of commercial Pt cathode. The characterizations of the appropriate Pt/rGO composite were investigated by Fourier-transform infrared spectroscopy (FTIR) and Raman spectroseopy. X-ray diffraction (XRD) patterns indicated that the interlayer distance between the rGO was 0.35 nm while the transmission electron microscopy (TEM) image showed the Pt nanoparticles with side of 10-20 nm were evenly distributed on the rGO sheets. These results indicated that Pt/rGO could be appropriated material to replace Pt in DSSCs to reduce the produce cost and enhance the efficiency. |
URI: | http://dspace.ctu.edu.vn/jspui/handle/123456789/23206 |
ISSN: | 2525-2321 |
Appears in Collections: | Vietnam Journal of Chemistry |
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