Electrochemical characterization of a novel iodine-free electrolyte for dye-sensitized solar cell

Congcong Wu, Yingpeng Gong, Song Han, Tetsuro Jin, Bo Chi, Jian Pu, Li Jian

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The triiodide ions in the triiodide/iodide redox electrolyte have the disadvantages of corrosion and spectrum absorption, which limits the further application of dye sensitized solar cell (DSSC). In this paper, an iodine-free electrolyte without the addition of iodine into iodide-based electrolyte was developed and the electrochemical performance of this novel electrolyte was evaluated by investigating the influence of iodine concentration on the performance of the electrolytes through UV-vis absorbance spectroscopy, Raman spectrum, current-voltage performance (I-Vcurve) and electrochemical impedance spectroscopy (EIS) methods. The results indicate that the iodine-free electrolyte could serve as an efficient mediator for DSSC operation. Owing to the absent of the triiodides generated by iodine, the iodine-free electrolyte has low charge recombination and fast electron transport characteristics, leading to relative high open circuit voltage (Voc). However, acceptable short circuit current (Jsc) was obtained due to the mass transport limitation for iodine-free electrolyte. The results indicate that the iodine-free electrolyte has a potential high performance for DSSC.

Original languageEnglish (US)
Pages (from-to)33-38
Number of pages6
JournalElectrochimica Acta
Volume71
DOIs
StatePublished - Jun 1 2012

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Iodine
Electrolytes
Iodides
Dye-sensitized solar cells
Open circuit voltage
Electrochemical impedance spectroscopy
Short circuit currents
Raman scattering
Absorption spectra
Mass transfer
Spectroscopy
Ions
Corrosion
Electric potential

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Electrochemistry

Cite this

Wu, Congcong ; Gong, Yingpeng ; Han, Song ; Jin, Tetsuro ; Chi, Bo ; Pu, Jian ; Jian, Li. / Electrochemical characterization of a novel iodine-free electrolyte for dye-sensitized solar cell. In: Electrochimica Acta. 2012 ; Vol. 71. pp. 33-38.
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abstract = "The triiodide ions in the triiodide/iodide redox electrolyte have the disadvantages of corrosion and spectrum absorption, which limits the further application of dye sensitized solar cell (DSSC). In this paper, an iodine-free electrolyte without the addition of iodine into iodide-based electrolyte was developed and the electrochemical performance of this novel electrolyte was evaluated by investigating the influence of iodine concentration on the performance of the electrolytes through UV-vis absorbance spectroscopy, Raman spectrum, current-voltage performance (I-Vcurve) and electrochemical impedance spectroscopy (EIS) methods. The results indicate that the iodine-free electrolyte could serve as an efficient mediator for DSSC operation. Owing to the absent of the triiodides generated by iodine, the iodine-free electrolyte has low charge recombination and fast electron transport characteristics, leading to relative high open circuit voltage (Voc). However, acceptable short circuit current (Jsc) was obtained due to the mass transport limitation for iodine-free electrolyte. The results indicate that the iodine-free electrolyte has a potential high performance for DSSC.",
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Electrochemical characterization of a novel iodine-free electrolyte for dye-sensitized solar cell. / Wu, Congcong; Gong, Yingpeng; Han, Song; Jin, Tetsuro; Chi, Bo; Pu, Jian; Jian, Li.

In: Electrochimica Acta, Vol. 71, 01.06.2012, p. 33-38.

Research output: Contribution to journalArticle

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AU - Wu, Congcong

AU - Gong, Yingpeng

AU - Han, Song

AU - Jin, Tetsuro

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AU - Pu, Jian

AU - Jian, Li

PY - 2012/6/1

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AB - The triiodide ions in the triiodide/iodide redox electrolyte have the disadvantages of corrosion and spectrum absorption, which limits the further application of dye sensitized solar cell (DSSC). In this paper, an iodine-free electrolyte without the addition of iodine into iodide-based electrolyte was developed and the electrochemical performance of this novel electrolyte was evaluated by investigating the influence of iodine concentration on the performance of the electrolytes through UV-vis absorbance spectroscopy, Raman spectrum, current-voltage performance (I-Vcurve) and electrochemical impedance spectroscopy (EIS) methods. The results indicate that the iodine-free electrolyte could serve as an efficient mediator for DSSC operation. Owing to the absent of the triiodides generated by iodine, the iodine-free electrolyte has low charge recombination and fast electron transport characteristics, leading to relative high open circuit voltage (Voc). However, acceptable short circuit current (Jsc) was obtained due to the mass transport limitation for iodine-free electrolyte. The results indicate that the iodine-free electrolyte has a potential high performance for DSSC.

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