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原位电化学沉积聚吡咯纳米粒子结合还原氧化石墨烯作为高效无铂染料敏化太阳能电池对电极。

In-situ electrochemically deposited polypyrrole nanoparticles incorporated reduced graphene oxide as an efficient counter electrode for platinum-free dye-sensitized solar cells.

机构信息

Low Dimensional Materials Research Centre, Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia.

1] Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia [2] Functional Device Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.

出版信息

Sci Rep. 2014 Jun 16;4:5305. doi: 10.1038/srep05305.

DOI:10.1038/srep05305
PMID:24930387
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4058879/
Abstract

This paper reports a rapid and in-situ electrochemical polymerization method for the fabrication of polypyrrole nanoparticles incorporated reduced graphene oxide (rGO@PPy) nanocomposites on a ITO conducting glass and its application as a counter electrode for platinum-free dye-sensitized solar cell (DSSC). The scanning electron microscopic images show the uniform distribution of PPy nanoparticles with diameter ranges between 20 and 30 nm on the rGO sheets. The electrochemical studies reveal that the rGO@PPy has smaller charge transfer resistance and similar electrocatalytic activity as that of the standard Pt counter electrode for the I₃(-)/I(-) redox reaction. The overall solar to electrical energy conversion efficiency of the DSSC with the rGO@PPy counter electrode is 2.21%, which is merely equal to the efficiency of DSSC with sputtered Pt counter electrode (2.19%). The excellent photovoltaic performance, rapid and simple fabrication method and low-cost of the rGO@PPy can be potentially exploited as a alternative counter electrode to the expensive Pt in DSSCs.

摘要

本文报道了一种快速原位电化学聚合方法，用于在 ITO 导电玻璃上制备聚吡咯纳米粒子与还原氧化石墨烯（rGO@PPy）纳米复合材料，并将其用作无铂染料敏化太阳能电池（DSSC）的对电极。扫描电子显微镜图像显示，PPy 纳米粒子在 rGO 片上的直径分布均匀，范围在 20 至 30nm 之间。电化学研究表明，rGO@PPy 对 I₃(-)/I(-)氧化还原反应具有较小的电荷转移电阻和与标准 Pt 对电极相似的电催化活性。使用 rGO@PPy 对电极的 DSSC 的整体光电能量转换效率为 2.21%，仅略低于溅射 Pt 对电极（2.19%）的 DSSC 的效率。rGO@PPy 的优异光伏性能、快速简单的制备方法和低成本，使其有可能替代昂贵的 Pt 作为 DSSC 中的对电极。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1435/4058879/00d61f9b9b2f/srep05305-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1435/4058879/15b4ac975ba6/srep05305-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1435/4058879/51f5b25738ee/srep05305-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1435/4058879/0e9c346cc386/srep05305-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1435/4058879/98a333606c60/srep05305-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1435/4058879/a66cf586512d/srep05305-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1435/4058879/110e08dc83bb/srep05305-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1435/4058879/0916e0418fa2/srep05305-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1435/4058879/00d61f9b9b2f/srep05305-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1435/4058879/15b4ac975ba6/srep05305-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1435/4058879/51f5b25738ee/srep05305-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1435/4058879/0e9c346cc386/srep05305-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1435/4058879/98a333606c60/srep05305-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1435/4058879/a66cf586512d/srep05305-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1435/4058879/110e08dc83bb/srep05305-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1435/4058879/0916e0418fa2/srep05305-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1435/4058879/00d61f9b9b2f/srep05305-f8.jpg

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