Pyrolysis synthesis of CuWO4@C composite catalysts as Pt-free counter electrode for dye-sensitized solar cells

被引：10

作者：

Wu, Kezhong ^{[1
]}

Wang, Zejin ^{[1
]}

Nie, FeiFei ^{[1
]}

Ruan, Bei ^{[1
]}

Zhao, Hui ^{[1
]}

Wu, Mingxing ^{[1
]}

机构：

[1] Hebei Normal Univ, Coll Chem & Mat Sci, Hebei Key Lab Inorgan Nanomat, Shijiazhuang 050024, Peoples R China

来源：

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS | 2023年 / 170卷

基金：

中国国家自然科学基金;

关键词：

Pyrolysis; Polyoxotungstate; Polyaniline; Dye -sensitized solar cells; Counter electrode; THIN-FILMS; PERFORMANCE; REDUCTION; NITROGEN; CO;

D O I：

10.1016/j.jaap.2023.105873

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Transition metal compound catalysts have potential applications in Pt-free counter electrode (CE), which are one of the important strategies for reducing costs and improving power conversion efficiency (PCE) of dye-sensitized solar cells (DSSCs). Herein, CuWO4@C composite catalysts were synthesized by pyrolyzing Cu-based polyoxotungstate (H3PW12O40) precursor in presence of polyaniline. The effect of pyrolysis temperature (600, 700, 800, 900, 1000 and 1100 degrees C) on the compositions, morphologies and structures of CuWO4@C composite was investigated by Thermogravimetry-Derivative thermogravimetry-Differential scanning calorimetry (TG-DTGDSC) simultaneous, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Scanning electron microscopy (SEM) and N2 adsorption-desorption analysis. The photovoltaic properties of different CuWO4@C composites CEs were determined by photocurrent-photovoltage (J-V) measurement. The results reveal that the pyrolysis at 800 degrees C was optimum to get the best CuWO4@C composite CE, which yielded the highest PCE of 7.11% for the regeneration of I3 /I couple in the DSSCs. The structure-activity relationship of the CuWO4@C composite catalysts was discussed.

引用

页数：7

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