Issue 34, 2011
From the journal:

Journal of Materials Chemistry

Platinum nanoparticles/graphene composite catalyst as a novel composite counter electrode for high performance dye-sensitized solar cells

Ming-Yu Yen,a   Chih-Chun Teng,a   Min-Chien Hsiao,a   Po-I Liu,a   Wen-Pin Chuang,a   Chen-Chi M. Ma,*a   Chien-Kuo Hsieh,b   Ming-Chi Tsaib  and  Chuen-Horng Tsaib  

* Corresponding authors

a Department of Chemical Engineering, National Tsing Hua University, No. 101, Section 2, Kuang-Fu Road, Hsinchu, Taiwan
E-mail: ccma@che.nthu.edu.tw
Fax: +886-35715408
Tel: +886-35713058

b Department of Engineering and System Science, National Tsing-Hua University, No. 101, Section 2, Kuang-Fu Road, HsinChu, Taiwan

Abstract

We herein describe our use of a water–ethylene method to prepare a composite material consisting of platinum nanoparticles and graphene. Results obtained using XPS and XRD show that the degree of reduction of graphene was increased by the incorporation of Pt, and in addition, the increased concentration of defects was confirmed by the D/G ratio of the Raman spectra obtained. In comparison with Pt films, results obtained using CV and EIS showed that the electrocatalytic ability of the composite material was greater, and afforded a higher charge transfer rate, an improved exchange current density, and a decreased internal resistance. SEM images showed that the morphology of PtNP/GR counter electrodes is characterized by a smooth surface, however, resulting in a lower resistance to diffusion, thereby improving the total redox reaction rate that occurs at the counter electrode. PtNP/GR electrodes have a number of advantages over other electrodes that consist solely of graphene or Pt films, including a high rate of charge transfer, a low internal resistance, and a low resistance to diffusion. In our study, we showed that DSSCs that incorporate platinum-grafted graphene had a conversion efficiency of 6.35%, which is 20% higher than that of devices with platinized FTO.

Graphical abstract: Platinum nanoparticles/graphene composite catalyst as a novel composite counter electrode for high performance dye-sensitized solar cells

About
Cited by
Related
Download options Please wait...

Article information

DOI
https://doi.org/10.1039/C1JM11850A
Article type
Paper
Submitted
27 Apr 2011
Accepted
08 Jun 2011
First published
22 Jul 2011

J. Mater. Chem., 2011,21, 12880-12888

Permissions

Request permissions

Platinum nanoparticles/graphene composite catalyst as a novel composite counter electrode for high performance dye-sensitized solar cells

M. Yen, C. Teng, M. Hsiao, P. Liu, W. Chuang, C. M. Ma, C. Hsieh, M. Tsai and C. Tsai, J. Mater. Chem., 2011, 21, 12880 DOI: 10.1039/C1JM11850A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements