CuS/Graphene Nanocomposite as a Transparent Conducting Oxide and Pt-Free Counter Electrode for Dye-Sensitized Solar Cells

被引：25
作者：
Mohammadnezhad, Mahyar [1 ]
Selopal, Gurpreet Singh [1 ,2 ]
Alsayyari, Nasser [1 ]
Akilimali, Rusoma [1 ]
Navarro-Pardo, Fabiola [1 ,2 ]
Wang, Zhiming M. [2 ]
Stansfield, Barry [1 ]
Zhao, Haiguang [3 ,4 ]
Rosei, Federico [1 ,2 ]
机构：
[1] Ctr Energie Mat & Telecommun, Inst Natl Rech Sci, 1650 Blvd Lionel Boulet, Varennes, PQ J3X 1S2, Canada
[2] Univ Elect Sci & Technol China, Inst Fundamental & Frontier Sci, Chengdu 610054, Sichuan, Peoples R China
[3] Qingdao Univ, Coll Phys, Qingdao 266071, Peoples R China
[4] Qingdao Univ, State Key Lab Biofibers & Ecotext, Qingdao 266071, Peoples R China
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2019年 / 166卷 / 05期
基金：
加拿大自然科学与工程研究理事会; 加拿大创新基金会;
关键词：
WALLED CARBON NANOTUBES; LOW-COST; ONE-POT; PHOTOANODES; EFFICIENCY; STABILITY; PERFORMANCE; COMPOSITES; FILM;
D O I：
10.1149/2.0121905jes
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
We report a simple, low temperature and solution-processable approach to prepare a composite film of copper sulfide/graphene (CuS-G) as a transparent conducting oxide (TCO) and platinum (Pt)-free CE for Dye-Sensitized Solar Cells (DSSCs). We find that CuS with 3.3 vol% of graphene (CuS-3G) yields the highest power conversion efficiency (PCE) of 4.83%, which is about 12% higher than DSSCs based on CEs made of pristine CuS. After optimizing the graphene concentration, the PCE of the DSSC assembled with the optimized CuS-3G is comparable to that based on Pt CE. The similar performance of the CuS-3G CE compared with Pt CE is mainly attributed to the small series resistance and high electrocatalytic activity of the CuS-3G CE; this is confirmed by cyclic voltammetry and electrochemical impedance spectroscopy. These results indicate a straightforward methodology for the low cost and easy synthesis of an alternative CE in DSSCs. (C) The Author(s) 2018. Published by ECS.
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收藏
页码：H3065 / H3073
页数：9
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