高等学校化学学报 ›› 2014, Vol. 35 ›› Issue (9): 1988.doi: 10.7503/cjcu20140135

• 物理化学 • 上一篇    下一篇

电沉积-置换法制备Pt/Ti对电极及其对染料敏化太阳能电池性能的提升

王耀琼1, 冉秀芝1, 高焕方1, 李莉2, 魏子栋2   

  1. 1. 重庆理工大学化学化工学院, 重庆 400054
    2. 重庆大学化学化工学院, 重庆 400044
  • 收稿日期:2014-02-24 出版日期:2014-09-10 发布日期:2019-08-01
  • 作者简介:联系人简介: 王耀琼, 男, 博士, 讲师, 主要从事材料催化和电化学反应工程研究. E-mail: wangyq863@cqut.edu.cn。魏子栋, 男, 博士, 教授, 博士生导师, 主要从事分子催化和新能源材料化学研究. E-mail: zdwei@cqu.edu.cn
  • 基金资助:
    基金项目: 国家自然科学基金(批准号: 21306235)和重庆市教育委员会科学技术研究项目(批准号: KJ130819)资助

Improvement Performance of Dye-sensitized Solar Cells with Pt/Ti Counter Electrode Prepared by Electrodeposition-displacement

WANG Yaoqiong1,*, RAN Xiuzhi1, GAO Huanfang1, LI Li2, WEI Zidong2,*   

  1. 1. School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
    2. School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
  • Received:2014-02-24 Online:2014-09-10 Published:2019-08-01
  • Contact: WANG Yaoqiong,WEI Zidong
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21306235) and the Scientific and Technological Research Program of Chongqing Municipal Education Commission, China(No;KJ130819)

摘要:

采用电沉积-置换法在Ti片上制备了染料敏化太阳能电池(DSSC)的对电极Pt/Ti. 形貌表征结果显示, 与传统热解法制备的Pt/FTO对电极相比, Pt/Ti对电极Ti基底上Pt催化颗粒的粒径和分散性得到显著改善. 光电流-光电压特性曲线测试结果表明, 以Pt/Ti为对电极的DSSC与以Pt/FTO为对电极的DSSC相比, 光电转化效率提高了20.8%. 由于Pt颗粒分散性和粒径的改善所引起的Pt催化性能的提高、 Pt/Ti对电极更低的电阻以及Ti基底更好的反光性能是提升DSSC性能的原因.

关键词: 染料敏化太阳能电池, 对电极, 电沉积, I-/I3-氧化还原电对

Abstract:

A Pt/Ti counter electrode of dye-sensitized solar cell(DSSC) was prepared by displacing electrodeposited Cu on a Ti sheet in H2PtCl6 solution. Morphological characterization of the Pt/Ti electrode shows that the dispersion and size of Pt particles on Ti substrate is significantly improved in contrast to that of the Pt/FTO electrode prepared by pyrolysing Pt salt on a fluorine-doped oxide(FTO) glass substrate. The photocurrent density-voltage(J-V) curves show that the overall energy conversion efficiency of DSSC with the Pt/Ti counter electrode increases by 20.8% relative to that with the Pt/FTO counter electrode. The results also reveal that the improved performance of the DSSC with the Pt/Ti counter electrode is assigned to the higher electrochemical surface area of the Pt/Ti counter electrode than the Pt/FTO, the lower electric resistance and the better reflecting ability of the Ti substrate than the FTO substrate.

Key words: Dye-sensitized solar cell(DSSC), Counter electrode, Electrodeposition, I-/I3- redox couple

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