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

ISSN号：1674-1056
期刊名称：《中国物理B：英文版》
时间：0
分类：TQ165[化学工程—高温制品工业] TM914.4[电气工程—电力电子与电力传动]
作者机构：[1]State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
相关基金：Project supported by the Program for New Century Excellent Talents in University, China （Grant No. NCET-10-0291）, the Fundamental Research Funds for the Central Universities~ China （Grant Nos. ZYGX2009X005 and ZYGX2010J031） the Startup Research Project of University of Electronic Science and Technology of China （Grant No. Y02002010301041）, and the National Natural Science Foundation of China （Grant Nos. 50832007, 11074285, and 51202022）.

作者：李萍剑[1], 程凯[1], 陈远富[1], 王泽高[1], 郝昕[1], 刘竞博[1], 贺加瑞[1], 张万里[1]

关键词：染料敏化太阳能电池, 石墨复合材料, 电催化活性, 石墨薄片, 铂金, 催化剂, 转换效率, 对电极, graphene, Pt nanoparticles, counter electrode, dye-sensitized solar cells

中文摘要：

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(η)of 3.89% upon the excitation of 100 mW/cm2 AM 1.5 white light,which is comparable to that of the cell with a Pt-film counter electrode(η=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.

英文摘要：

Platinum nanoparticles （PtNPs）/graphene composite materials are synthesized by a controlled chemical reduction of H2PtC16 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 （η） of 3.89% upon the excitation of 100 mW/cm2 AM 1.5 white light, which is comparable to that of the cell with a Pt-film counter electrode （7 = 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.

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