Synthesis of graphene-CoS electro-catalytic electrodes for dye sensitized solar cells

被引：123

作者：

Das, Santanu ^{[1
]}

Sudhagar, P. ^{[2
,3
]}

Nagarajan, S. ^{[2
,3
]}

Ito, Eisuke ^{[4
]}

Lee, Sang Yun ^{[4
]}

Kang, Yong Soo ^{[2
,3
]}

Choi, Wonbong ^{[1
,2
,3
]}

机构：

[1] Florida Int Univ, Dept Mech & Mat Engn, Miami, FL 33174 USA

[2] Hanyang Univ, Dept Energy Engn, World Class Univ Program, Seoul 133791, South Korea

[3] Hanyang Univ, Ctr Next Generat Dye Sensitized Solar Cells, Seoul 133791, South Korea

[4] RIKEN ASI, Flucto Order Funct Res Team, Saitama 3510198, Japan

来源：

CARBON | 2012年 / 50卷 / 13期

关键词：

TRIIODIDE REDUCTION; COUNTER ELECTRODE;

D O I：

10.1016/j.carbon.2012.06.006

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：

A large CoS-implanted graphene (G-CoS) film electrode was prepared using chemical vapor deposition followed by successive ionic layer absorption and reaction. HRTEM and AFM show that CoS nanoparticles are uniformly implanted on the graphene film. Furthermore, the G-CoS electro-catalytic electrode is characterized in a dye sensitized solar cells (DSSC) and is found to be highly electro-catalytic towards iodine reduction with low charge transfer resistance (R-ct similar to 5.05 Omega cm(2)) and high exchange current density (J(0)similar to 2.50 mA cm(-2)). The improved performance compared to the pristine graphene is attributed to the increased number of active catalytic sites of G-CoS and highly conducting path of graphene. The comprehensive G-CoS synthesis process is a simple and scalable process which can easily adapt for large scale electro-catalytic film fabrication for several other electro-chemical energy harvesting and storage applications. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：4815 / 4821

页数：7

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