NDLI: La$_{0.5}$Sr$_{0.5}$CoO$_{2.91}$@RGO nanocomposites as an effective counter electrode for dye-sensitized solar cells

Content Provider	Springer Nature Link
Author	Xiong, Kuangwei Liu, Zhongfei Yuan, Jiangtao Li, Kunzhen Li, Guang Jin, Shaowei Luo, Chunling Zhu, Lihua Shi, Haiquan Xiao, Xin
Copyright Year	2016
Abstract	The role of the counter electrode (CE) in dye-sensitized solar cell (DSSC) is to collect electrons from the external circuit and reduce I 3 − to I $^{−}$ in the electrolyte. In this paper, the perovskite-phase La$_{0.5}$Sr$_{0.5}$CoO$_{2.91}$ (LSCO) nanoparticles were synthesized through a sol–gel method and used as the CE for DSSC. The cell showed a power conversion efficiency (PCE) of 3.24 %. To further improve the PCE of CE of the LSCO nanoparticles, the nanocomposites of the LSCO nanoparticles with reduced graphene oxide (LSCO@RGO) have been prepared via a simply physical mixing method and served as the efficient CE for DSSC. The LSCO@RGO nanocomposites exhibit excellent electrocatalytic performance for reduction of triiodide, owing to the positive synergetic effect between LSCO nanoparticles and RGO sheets. As a consequence, the DSSC with the LSCO@RGO nanocomposites CE yielded a PCE of 6.32 %, which is observably higher than that of using pristine LSCO CE (3.24 %) or RGO CE (4.54 %) alone, and up to 88 % of the Pt CE (7.18 %).
Starting Page	1679
Ending Page	1683
Page Count	5
File Format	PDF
ISSN	09574522
Journal	Journal of Materials Science: Materials in Electronics
Volume Number	28
Issue Number	2
e-ISSN	1573482X
Language	English
Publisher	Springer US
Publisher Date	2016-09-22
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optical and Electronic Materials Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Biomaterials Biophysics Condensed Matter Physics Electronic, Optical and Magnetic Materials Bioengineering Electrical and Electronic Engineering Biomedical Engineering

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