期刊
NANO ENERGY
卷 22, 期 -, 页码 558-563出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2016.03.003
关键词
Graphene; Ni nanoparticles; Counter-electrode; Dye-sensitized solar cells
类别
资金
- US-Pakistan Joint Science and Technology through National Academy of Science
- NSF/EPSCoR program [0903804]
- State of South Dakota
- NSF [NSF CMMI-1234297]
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1234297] Funding Source: National Science Foundation
A novel porous three dimensional (3D) hierarchical graphene-beaded carbon nanofibers with incorporated Ni nanoparticles (G/CNFs-Ni) were used for the first time as cost-effective counter-electrode for dye-sensitized solar cells (DSCs). G/CNFs-Ni was synthesized by electrospinning G/PAN/Ni(AcAc)2 precursor nanofibers, followed by carbonization and activation. The introduction of graphene nanosheets and Ni nanoparticles in CNF networks significantly increased the cells' stability and decreased the charge-transfer resistance at the interface between electrolyte and counter-electrode, leading to the high electrocatalytic activity/efficiency for triiodide reduction. The G/CNFs-Ni composite counter-electrodes possessed larger capacitance than that of Pt counter-electrodes due to larger specific surface area, leading to significantly higher electrocatalytic activity/efficiency for triiodide reduction at the interface between electrolyte and counter-electrode. The dye-sensitized solar cells (DSCs) fabricated using G/CNFs-Ni composite as counter-electrodes were tested at 100 mW/cm(2) AM 1.5 illumination. The G/CNFs-Ni composite exhibited an overall power conversion efficiency of 7.14% as compared to 7.59% for reference platinum (Pt) counter-electrodes. (C) 2016 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据