EMAIL THIS PAGE TO A FRIEND

Nanoscale research letters

Enhanced Electrochemical Catalytic Efficiencies of Electrochemically Deposited Platinum Nanocubes as a Counter Electrode for Dye-Sensitized Solar Cells.


PMID 26625891

Abstract

Platinum nanocubes (PtNCs) were deposited onto a fluorine-doped tin oxide glass by electrochemical deposition (ECD) method and utilized as a counter electrode (CE) for dye-sensitized solar cells (DSSCs). In this study, we controlled the growth of the crystalline plane to synthesize the single-crystal PtNCs at room temperature. The morphologies and crystalline nanostructure of the ECD PtNCs were examined by field emission scanning electron microscopy and high-resolution transmission electron microscopy. The surface roughness of the ECD PtNCs was examined by atomic force microscopy. The electrochemical properties of the ECD PtNCs were analyzed by cyclic voltammetry, Tafel polarization, and electrochemical impedance spectra. The Pt loading was examined by inductively coupled plasma mass spectrometry. The DSSCs were assembled via an N719 dye-sensitized titanium dioxide working electrode, an iodine-based electrolyte, and a CE. The photoelectric conversion efficiency (PCE) of the DSSCs with the ECD PtNC CE was examined under the illumination of AM 1.5 (100xa0mWcm(-2)). The PtNCs in this study presented a single-crystal nanostructure that can raise the electron mobility to let up the charge-transfer impedance and promote the charge-transfer rate. In this work, the electrocatalytic mass activity (MA) of the Pt film and PtNCs was 1.508 and 4.088xa0mAmg(-1), respectively, and the MA of PtNCs was 2.71 times than that of the Pt film. The DSSCs with the pulse-ECD PtNC CE showed a PCE of 6.48xa0%, which is higher than the cell using the conventional Pt film CE (a PCE of 6.18xa0%). In contrast to the conventional Pt film CE which is fabricated by electron beam evaporation method, our pulse-ECD PtNCs maximized the Pt catalytic properties as a CE in DSSCs. The results demonstrated that the PtNCs played a good catalyst for iodide/triiodide redox couple reactions in the DSSCs and provided a potential strategy for electrochemical catalytic applications.

Related Materials

Product #

Image

Description

Molecular Formula

Add to Cart

I9516
2-Propanol, BioReagent, for molecular biology, ≥99.5%
C3H8O
278475
2-Propanol, anhydrous, 99.5%
C3H8O
675431
2-Propanol, HPLC Plus, for HPLC, GC, and residue analysis, 99.9%, poly coated bottles
C3H8O
437522
2-Propanol, ACS reagent, ≥99.5%
C3H8O
59304
2-Propanol, BioUltra, for molecular biology, ≥99.5% (GC)
C3H8O
40301
2-Propanol, semiconductor grade VLSI PURANAL (Honeywell 17604)
C3H8O
40219
2-Propanol, semiconductor grade PURANAL (Honeywell 17829)
C3H8O
40279
2-Propanol, semiconductor grade MOS PURANAL (Honeywell 17930)
C3H8O
270490
2-Propanol, 99.5%, HPLC grade
C3H8O
15-2360
2-Propanol, for HPLC
C3H8O
733458
2-Propanol, electronic grade, 99.999% trace metals basis
C3H8O
439126
Acetone, for HPLC, ≥99.9%
C3H6O
00561
Acetone, for luminescence, ≥99.5% (GC)
C3H6O
40289
Acetone, semiconductor grade VLSI PURANAL (Honeywell 17617)
C3H6O
W332607
Acetone, ≥99%, meets FCC analytical specifications
C3H6O
W332615
Acetone, natural, ≥97%
C3H6O
01-0520
Acetone, for HPLC
C3H6O
01-0494
Acetone, for residue analysis, suitable for 5000 per JIS
C3H6O
01-0475
Acetone, suitable for determination of dioxins
C3H6O
48358
Acetone solution, certified reference material, 2000 μg/mL in methanol: water (9:1)
C3H6O
686530
Acetone solution, contains 20.0 % (v/v) acetonitrile, for HPLC
C3H6O
W292907
Isopropyl alcohol, ≥99.7%, FCC, FG
C3H8O