A promising hybrid counter electrode of vanadium sulfide decorated with carbon nanotubes for efficient dye-sensitized solar cells

作者：Yue, Gentian^*; Liu, Xianqing; Mao, Yangfan; Zheng, Haiwu^*; Zhang, Weifeng

来源：Materials Today Energy, 2017, 4: 58-65.

DOI：10.1016/j.mtener.2017.03.007

• Dye-sensitized solar cells
• Counter electrode
• Carbon nanotube
• Vanadium sulfide
• Power conversion efficiency

A hybrid counter electrode (CE) of vanadium sulfide decorated with carbon nanotubes (CNTs/VS2) for efficient dye-sensitized solar cells (DSSCs) was prepared by using an in situ hydrothermal route, and the DSSC based on the CNTs/VS2 CE prepared at 180 degrees C and contained 0.05 g CNTs exhibits a power conversion efficiency of 7.72% under illumination of 100 mW cm(-2). The surface morphology of the VS2 and CNTs/VS2 changed from nanoparticles to one-dimensional (1D) structure was significantly affected by temperature. The electrochemical performance analyses including cyclic voltammetry, electrochemical impedance and Tafel curves for the CNTs/VS2 CEs with different temperatures and CNT contents reveal that the CNTs/VS2 CE possesses the better electrocatalytic activity and lower charge transfer resistance at the electrolyte/CE interface for I-/I-3(-) liquid electrolyte at 180 degrees C and 0.05 g CNTs.

• 出版日期2017-6
• 单位河南大学; 泉州师范学院