期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 53, 期 27, 页码 7023-7027出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201400388
关键词
carbon nanotubes; electrocatalysis; FeNi alloys; non-precious metals; solar cells
资金
- Chinese Academy of Sciences
- National Science Foundation of China [20873141, 21303191]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDA09030100]
Podlike nitrogen-doped carbon nanotubes encapsulating FeNi alloy nanoparticles (Pod(N)-FeNi) were prepared by the direct pyrolysis of organometallic precursors. Cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and Tafel polarization measurements revealed their excellent electrocatalytic activities in the I-/I-3(-) redox reaction of dye-sensitized solar cells (DSSCs). This is suggested to arise from the modification of the surface electronic properties of the carbon by the encapsulated metal alloy nanoparticles (NPs). Sequential scanning with EIS and CV further showed the high electrochemical stability of the Pod(N)-FeNi composite. DSSCs with Pod(N)-FeNi as the counter electrode (CE) presented a power conversion efficiency of 8.82%, which is superior to that of the control device with sputtered Pt as the CE. The Pod(N)-FeNi composite thus shows promise as an environmentally friendly, low-cost, and highly efficient CE material for DSSCs.
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