碳纳米管负载Ni2P作为染料敏化太阳能电池对电极的性能研究

doi:10.61558/2993-074X.2920

电化学（中英文） ›› 2012, Vol. 18 ›› Issue (4): 301-305. doi: 10.61558/2993-074X.2920

• 化学电源近期研究专辑（武汉大学杨汉西教授主编） • 上一篇下一篇

碳纳米管负载Ni₂P作为染料敏化太阳能电池对电极的性能研究

窦衍叶, 晏南富, 李国然, 高学平*

南开大学新能源材料化学研究所，天津 300071

收稿日期:2011-11-24 修回日期:2012-02-16 出版日期:2012-08-28 发布日期:2012-02-21
通讯作者: 高学平 E-mail:xpgao@nankai.edu.cn
基金资助:
国家973计划(No. 2009CB220100)，国家自然科学基金(No. 51001063)和天津市应用基础及前沿技术研究计划(No. 11JCZDJC23300)资助

Carbon Nanotubes with Ni₂P Nanoparticles as a Counter Electrode in Dye-sensitized Solar Cells

DOU Yan-Ye, YAN Nan-Fu, LI Guo-Ran, GAO Xue-Ping*

Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, China

Received:2011-11-24 Revised:2012-02-16 Published:2012-08-28 Online:2012-02-21
Contact: GAO Xue-Ping E-mail:xpgao@nankai.edu.cn

摘要/Abstract

摘要： 本文以碳纳米管（CNTs）与Ni₂P纳米晶制备CNTs-Ni₂P复合材料，首次研究其染料敏化太阳能电池（DSSCs）的光阴极材料性能. 采用X射线衍射（XRD）和透射电子显微镜（TEM）测定材料结构和观察其形貌. 结果表明，复合材料由碳纳米管和六方结构的磷化镍构成，无其它磷化物杂相，磷化镍纳米晶（10 nm左右）分散于CNTs表面. 交流阻抗（EIS）测试显示，与CNTs和Ni2P对电极相比，CNTs-Ni2P对电极的电荷转移电阻和扩散阻抗较低，接近Pt-FTO对电极水平. CNTs-Ni₂P对电极的DSSCs光电流达12.9 mA.cm^-2，能量转化效率达5.6 %，接近Pt-FTO对电极的DSSCs能量转化效率（5.9 %）. 这归因于高电催化活性的磷化镍纳米晶与高电导CNTs的协同效应.

关键词: 染料敏化太阳能电池, 对电极, 光电性能, 碳纳米管, 磷化镍

Abstract: Carbon nanotubes (CNTs) supported by Ni₂P nanoparticles are prepared and used as a counter electrode in dye-sensitized solar cells (DSSCs) for the first time. The CNTs-Ni₂P composite was prepared by the heat treatment of a mixed precursor including nickel chloride, sodium hypophosphite and CNTs in argon atmosphere. The X-Ray diffraction (XRD) results indicate that the as-prepared sample consists of hexagonal Ni2P and carbon nanotubes. No peaks of other nickel phosphides are observed in the XRD pattern. Microstructure of the Ni₂P-CNTs composite was investigated using transmission electron microscopy (TEM). It is shown that the Ni₂P nanoparticles with a size of about 10 nm are dispersed on the surface of CNTs. In addition, electrochemical impedance spectra (EIS) and photovoltaic conversion performance of counter electrodes for DSSCs are analyzed in detail. It is demonstrated that the Ni2P-CNTs composite presents an obviously low charge-transfer resistance and diffusion impedance as compared with those of individual CNTs and Ni₂P. Accordingly, the DSSCs using the composite as a counter electrode have a comparable photovoltaic performance as compared with the conventional FTO/Pt counter electrode, due to the effective combination of the high electrical conductivity of carbon nanotubes and superior electrocatalytic activity of Ni₂P nanoparticles.

Key words: dye-sensitized solar cells, counter electrode, photoelectric performance, nickel phosphide, carbon nanotubes

中图分类号:

O646

窦衍叶, 晏南富, 李国然, 高学平. 碳纳米管负载Ni₂P作为染料敏化太阳能电池对电极的性能研究[J]. 电化学（中英文）, 2012, 18(4): 301-305.

DOU Yan-Ye, YAN Nan-Fu, LI Guo-Ran, GAO Xue-Ping. Carbon Nanotubes with Ni₂P Nanoparticles as a Counter Electrode in Dye-sensitized Solar Cells[J]. Journal of Electrochemistry, 2012, 18(4): 301-305.

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https://electrochem.xmu.edu.cn/CN/Y2012/V18/I4/301

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碳纳米管负载Ni₂P作为染料敏化太阳能电池对电极的性能研究

Carbon Nanotubes with Ni₂P Nanoparticles as a Counter Electrode in Dye-sensitized Solar Cells

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