Low platinum loading PtNPs/graphene composite catalyst with high electrocatalytic activity for dye-sensitized solar cells

被引：15

作者：

Li Ping-Jian ^{[1
]}

Chen Kai ^{[1
]}

Chen Yuan-Fu ^{[1
]}

Wang Ze-Gao ^{[1
]}

Hao Xin ^{[1
]}

Liu Jing-Bo ^{[1
]}

He Jia-Rui ^{[1
]}

Zhang Wan-Li ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Peoples R China

来源：

CHINESE PHYSICS B | 2012年 / 21卷 / 11期

基金：

中国国家自然科学基金;

关键词：

graphene; Pt nanoparticles; counter electrode; dye-sensitized solar cells; EXFOLIATED GRAPHITE OXIDE; COUNTER-ELECTRODE; PERFORMANCE; REDUCTION; NANOSHEETS; FILM;

D O I：

10.1088/1674-1056/21/11/118101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Platinum nanoparticles (PtNPs)/graphene composite materials are synthesized by a controlled chemical reduction of H2PtCl6 on graphene sheets. The electrocatalytic activity of a PtNPs/graphene composite counter electrode for a dye-sensitized solar cell (DSSC) is investigated. The results demonstrate that the PtNPs/graphene composite has high electrocatalytic activity for the dye-sensitized solar cell. The cell employing PtNPs (1.6 wt%)/graphene counter electrode reaches an conversion efficiency (eta) of 3.89% upon the excitation of 100 mW/cm(2) AM 1.5 white light, which is comparable to that of the cell with a Pt-film counter electrode (eta = 3.76%). It suggests that one can use only 14% Pt content of the conventional Pt-film counter electrode to obtain a comparable conversion efficiency. It may be possible to obtain a high performance DSSC using the PtNPs/graphene composite with a very low Pt content as a counter electrode due to its simplicity, low cost, and large scalability.

引用

页数：5

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