Surfactant-free synthesis of graphene-functionalized carbon nanotube film as a catalytic counter electrode in dye-sensitized solar cells

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• 作者：Jie Ma ; Lu Zhou ; Cheng Li ; Jinhu Yang ; Tao Meng ; Huiming Zhou ; Mingxuan Yang ; Fei Yu ; Junhong Chen
• 关键词：Carbon nanotube ; Graphene ; Counter electrode ; Surfactant
• 刊名：Journal of Power Sources
• 出版年：1 February, 2014
• 年：2014
• 卷：247
• 期：Complete
• 页码：999-1004
• 全文大小：889 K

文摘

We use graphene oxide (GO) as a 鈥渟urfactant鈥?to obtain stable colloidal dispersion of carbon nanotubes (CNTs). CNT films are subsequently synthesized successfully without the addition of any traditional surfactants. Dye-sensitized solar cells assembled using the resulting CNT film as a counter electrode deliver a power conversion efficiency up to 5.29%. More importantly, the additional reduced graphene oxide significantly increases the electrical conductivity and the catalytic activity of the CNT film. The cell performance using a CNT film counter electrode (5.29%) reaches 68.70% of that of cells prepared using a platinum film counter electrode (7.70%).