Hollow spherical NiS/NiS2 composite as effective counter electrode catalyst for dye-sensitized solar cells

被引：6
|
作者：
Zuo, Xueqin [1 ]
Yan, Shengnan [1 ]
Yang, Bo [1 ]
Li, Guang [1 ,2 ]
Wu, Mingzai [1 ,2 ]
Ma, Yongqing [1 ,2 ]
Jin, Shaowei [1 ,2 ]
Zhu, Kerong [1 ,2 ]
机构：
[1] Anhui Univ, Sch Phys & Mat Sci, Hefei 230601, Peoples R China
[2] Anhui Key Lab Informat Mat & Devices, Hefei 230601, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2016年 / 27卷 / 08期
基金：
中国国家自然科学基金;
关键词：
GRAPHENE; FILMS;
D O I：
10.1007/s10854-016-4791-z
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this study, NiS/NiS2 composite hollow spheres were synthesized by a one-step solvothermal route without the help of template or surfactant. Electrochemical behavior of NiS/NiS2 composite was investigated through the cyclic voltammetry, electrochemical impedance spectroscopy and Tafel polarization tests. The results exhibit that the NiS/NiS2 composite possess excellent electrocatalytic activity toward the reduction of I-3 (-), superior electrochemical stability and low charge transfer resistance (0.34 Omega cm(-2)) at the electrode/electrolyte interface. When used as counter electrode (CE) catalyst for dye-sensitized solar cells, hollow spherical NiS/NiS2 composite achieved a satisfactory power conversion efficiency of 7.66 %, which outperformed that of using Pt CE (7.01 %).
引用
收藏
页码：7974 / 7978
页数：5
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