Novel ZnCo2O4/WO3 nanocomposite as the counter electrode for dye-sensitized solar cells (DSSCs): study of electrocatalytic activity and charge transfer properties

被引：23

作者：

Althomali, Raed H. ^{[1
]}

Saleh, Ebraheem Abdu Musad ^{[1
]}

Bhat, Ramesh S. ^{[2
]}

Askar, Shavan ^{[3
]}

Sapaev, I. B. ^{[4
,5
,6
]}

Najm, Mazin A. A. ^{[7
]}

Ridha, Benien M. ^{[8
]}

Alsalamy, Ali H. ^{[9
]}

Riyadh, Russual ^{[10
]}

机构：

[1] Prince Sattam Bin Abdulaziz Univ, Coll Arts & Sci, Dept Chem, Wadi Al Dawasir 11991, Saudi Arabia

[2] NMAM Inst Technol, Dept Chem, Nitte 574110, Karnataka, India

[3] Erbil Polytech Univ, Erbil Tech Engn Coll, Erbil, Iraq

[4] New Uzbekistan Univ, Tashkent, Uzbekistan

[5] Cent Asian Univ, Sch Engn, Tashkent 111221, Uzbekistan

[6] Natl Res Univ, Tashkent Inst Irrigat & Agr Mechanizat Engineers, Tashkent, Uzbekistan

[7] Al Ayen Univ, Coll Pharm, Pharmaceut Chem Dept, Thi Qar, Iraq

[8] Islamic Univ, Coll Tech Engn, Najaf, Iraq

[9] Imam Jaafar Al Sadiq Univ, Coll Tech Engn, Al Muthanna 66002, Iraq

[10] Al Farahidi Univ, Med Tech Coll, Baghdad, Iraq

来源：

OPTICAL MATERIALS | 2023年 / 143卷

关键词：

DSSC; Counter electrode; Electrocatalytic activity; HYDROTHERMAL SYNTHESIS; LOW-COST; PERFORMANCE; COMPOSITE; NANOSTRUCTURES; FABRICATION; SUPERCAPACITOR; EFFICIENCY; FILM;

D O I：

10.1016/j.optmat.2023.114248

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nowadays, Pt coated FTO is used conventionally as the counter electrode in dye-sensitized solar cell (DSSC). In addition to the high price of the Pt electrode, it reduces the stability of the DSSC. In this study, we introduce and study a new counter electrode based on the ZnCo2O4/WO3 composite that is used in DSSC. We show that the efficiency of the DSSC can be enhanced even more then the Pt-based one by employing the ZnCo2O4/WO3 as counter electrode. By examining the structural, morphological, optical, and electrochemical properties of the synthesized electrodes, we investigate the counter electrodes synthesized under different conditions. The XRD patterns and FESEM images confirm that the composite phase of the ZnCo2O4/WO3 layers is formed. Additionally, electrochemical studies by CV, Tafel, EIS, and Mott-Schottky methods indicate the electrocatalytic activity of the ZnCo2O4/WO3 sample have significantly increased compared to ZnCo2O4 and WO3 electrodes. Furthermore, the characterization of DSSCs with TiO2 photoanode and different counter electrodes show that the efficiency of the solar cells based on ZnCo2O4/WO3 has a promising efficiency of 7.76%, which has increased by 7% compared to the Pt one.

引用

页数：10

共 57 条

[1] ZnO@ZnCo2O4 core-shell: A novel high electrocatalytic nanostructure to replace platinum as the counter electrode in dye-sensitized solar cells [J].