Preparation of Pt-NiO/Co3O4 nanocompounds based counter electrodes from Pt-Ni/Co alloys for high efficient dye-sensitized solar cells

被引：20

作者：

Lan, Zhang ^{[1
]}

Que, Lanfang ^{[1
]}

Wu, Wanxia ^{[1
]}

Wu, Jihuai ^{[1
]}

机构：

[1] Huaqiao Univ, Inst Mat Phys Chem, Engn Res Ctr Environm Friendly Funct Mat, Key Lab Funct Mat Fujian Higher Educ,Minist Educ, Xiamen 361021, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 646卷

基金：

中国国家自然科学基金; 芬兰科学院;

关键词：

Dye-sensitized solar cell; Counter electrode; Platinum-nickel/cobalt oxide; Photovoltaic performance; HIGH-PERFORMANCE; ELECTROCATALYST; FABRICATION; COMPOSITE;

D O I：

10.1016/j.jallcom.2015.06.088

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Platinum-nickel/cobalt oxide (Pt-NiO/Co3O4) nanocompounds with size about 30-50 nm are synthesized for preparing counter electrodes (CEs) by in-situ oxidation of Pt-Ni/Co alloys through thermal treatment in air. Electrochemical activity measurements including cyclic voltammetry, electrochemical impedance spectroscopy, and Tafel polarization indicate that Pt-NiO/Co3O4 CEs have highly catalytic activity for reduction of triiodide to iodide and low charge transfer resistance at the electrolyte/electrode interface. The DSSCs with Pt-NiO/Co3O4 CEs show high power conversion efficiency exceeding 8%. Especially, the DSSC with Pt-NiO CE achieves a comparative power conversion efficiency of 9.48% versus the DSSC with thermal decomposited Pt CE (9.42%) under full sunlight illumination. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：80 / 85

页数：6

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