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. 2023 Nov 14;9(11):e22403.
doi: 10.1016/j.heliyon.2023.e22403. eCollection 2023 Nov.

Enhanced electrocatalytic properties in dye-sensitized solar cell via Pt/SBA-15 composite with optimized Pt constituent

Ding Nan  1 , Hongzhi Fan  1 , Altan Bolag  1 , Wenhui Liu  1 , Tana Bao  1
Affiliations

Enhanced electrocatalytic properties in dye-sensitized solar cell via Pt/SBA-15 composite with optimized Pt constituent

Ding Nan et al. Heliyon. .

Abstract

The Low utilization and high cost of platinum counter electrode (CE) in the application of dye-sensitized solar cells has limited its large-scale manufacturing in the industry. Herein, a facile pyrolysis combination of Pt and SBA-15 molecular sieve (MS) formed 1.6-1.9 times higher amount and 2-3 times reduced dimension of Pt distributed within porous structure of SBA-15. The composite CE with 20 % of SBA-15 exhibited an enhanced power conversion efficiency of 9.31 %, exceeding that of absolute Pt CE (7.57 %). This superior performance owed to the promoted oxidation-reduction rate of I3-/I- pairs at the CE interface and the increased conductivity of CE materials attributed from well distributed Pt particles. This work has demonstrated the significance of utilizing porous molecular sieves for dispersing catalytic sites when designing a novel type of counter electrode and their application in DSSCs.

Keywords: Counter electrode; Dye-sensitized solar cells; Electrocatalytic property; Molecular sieves; SBA-15.

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Conflict of interest statement

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Figures

Fig. 1
Fig. 1
XRD diffraction patterns of Pt, Pt/SBA-15 composites and SBA-15.
Fig. 2
Fig. 2
SEM image of Pt and Pt/SBA-15 composite CEs, (a) Pt, (b) Pt/SBA1, (c) Pt/SBA2, (d) Pt/SBA3.
Fig. 3
Fig. 3
Transmission curve of Pt, Pt/SBA-15 composites and SBA-15.
Fig. 4
Fig. 4
J-V characteristic curve of the DSSCs based on Pt, Pt/SBA-15 composites and SBA-15.
Fig. 5
Fig. 5
Cyclic voltammetry curve of Pt, Pt/SBA-15 composites and SBA-15 electrodes.
Fig. 6
Fig. 6
Electrochemical impedance spectroscopy of Pt, Pt/SBA-15 composites and SBA-15 CEs, as well as the Randles-type equivalent circuit based on dummy cells.
Fig. 7
Fig. 7
Tafel polarization diagram of Pt, Pt/SBA-15 composites and SBA-15 CEs.
See this image and copyright information in PMC

References

    1. Vaghasiya J.V., Sonigara K.K., Suresh L., Panahandeh-Fard M., Soni S.S., Tan S.C. Efficient power generating devices utilizing low intensity indoor lights via non-radiative energy transfer mechanism from organic ionic redox couples. Nano Energy. 2019;60:457–466.
    1. O'Regan B., Gratzel M. A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films. Nature. 1991;353:737–740.
    1. Gratzel M. Solar energy conversion by dye-sensitized photovoltaic cells. Inorg. Chem. Rev. 2005;44:6841–6851. - PubMed
    1. Hagfeldt A., Boschloo G., Sun L., Kloo L., Pettersson H. Dye-sensitized solar cells. Chem. 2010;110:6595–6663. - PubMed
    1. Freitag M., Teuscher J., Saygili Y., Zhang X., Giordano F., Liska P., Hua J.L., Zakeeruddin S.M., Moser J.E., Gratzel M., Hagfeldt A. Dye-sensitized solar cells for efficient power generation under ambient lighting. Nat. Photonics. 2017;11:372–378.

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