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Journal of Sol-Gel Science and Technology
Erschienen in: Journal of Sol-Gel Science and Technology 1/2015

01.04.2015 | Original Paper

High-performance Co9Se8/CoSe counter electrode for dye-sensitized solar cells

verfasst von: Qingsong Jiang, Jian Gao, Lin Yi

Erschienen in: Journal of Sol-Gel Science and Technology | Ausgabe 1/2015

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Abstract

In this paper, high-performance Co9Se8/CoSe counter electrodes (CEs) had been fabricated for dye-sensitized solar cells (DSSCs). The Co9Se8/CoSe structure had been successfully synthesized by a one-step solvothermal method. Co9Se8/CoSe films on conductive glass substrates were fabricated by a low-temperature spray deposition. The electrocatalytic activity of CEs had been characterized by cyclic voltammetry, Tafel-polarization curves, and electrochemical impedance spectroscopy (EIS). It was found that Co9Se8/CoSe film showed slightly higher electrocatalytic activity than Pt for the reduction of \({\text{I}}_{3}^{ - }\). The power conversion efficiency of the DSSC based on Co9Se8/CoSe CE was improved from 6.59 to 6.75 %, with respect to a reference DSSC based on Pt CE.

Graphical abstract

Co9Se8/CoSe film shows the similar catalytic activity with Pt for the \({\text{I}}_{3}^{ - }\) reduction, and the best performance of the DSSCs based on Co9Se8/CoSe CE is achieved with the open-circuit voltage of 0.70 V, the short-circuit current density of 15.06 mA cm−2, and the power conversion efficiency of 6.75 %.
Vorheriger Artikel Preparation and characterization of graphene aerogel/Fe2O3/ammonium perchlorate nanostructured energetic composite
Nächster Artikel One-pot synthesis and characterization of acid-catalyzed melamine formaldehyde/SiO2 aerogel via sol–gel technology

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Metadaten
Titel
High-performance Co9Se8/CoSe counter electrode for dye-sensitized solar cells
verfasst von
Qingsong Jiang
Jian Gao
Lin Yi
Publikationsdatum
01.04.2015
Verlag
Springer US
Erschienen in
Journal of Sol-Gel Science and Technology / Ausgabe 1/2015
Print ISSN: 0928-0707
Elektronische ISSN: 1573-4846
DOI
https://doi.org/10.1007/s10971-014-3592-1

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