期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 692, 期 -, 页码 941-949出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.09.149
关键词
MoS2 nanosheets; CNTs; Hybrid nanostructure; Counter electrode; Dye-sensitized solar cells
资金
- Ministry of Science and Technology of Taiwan [MOST 103-2221-E-131-029]
Two-dimensional (2D) molybdenum disulfide (MoS2) nanosheets were synthesized to anchor onto the surfaces of directly grown one-dimensional (1D) carbon nanotubes (CNTs) on fluorinated tin oxide (FTO) glass. This three-dimensional (3D) vertically aligned hybrid nanoarchitecture was used in Pt-free counter electrodes (CEs) for dye-sensitized solar cells (DSSCs). The prepared 2D MoS2 nanosheets, with exposed layers, provided a great deal of edge-plane catalytically active sites for I-3(-) reduction. The directly grown 1D CNTs provide an attractive template that offers a large surface area to promote the loading of 2D MoS2 nanosheets for enhancing electrochemical activity. The CNTs directly grown on the FTO substrate provided a high-speed pathway that promoted charge transport and transfer, resulting in a lower electron lifetime that increased the exchange current density and reduced the charge-transfer resistance. The DSSCs assembled with the 3D vertically aligned MoS2/CNT hybrid nanoarchitecture CE achieved a power conversion efficiency of 7.83%, 9.5% higher than that of a cell prepared with a Pt film CE (7.15%). (C) 2016 Elsevier B.V. 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