A Graphene Composite Material with Single Cobalt Active Sites: A Highly Efficient Counter Electrode for Dye-Sensitized Solar Cells

doi:10.1002/anie.201602097

CAS OpenIR > 中科院上海应用物理研究所2011-2019年

	A Graphene Composite Material with Single Cobalt Active Sites: A Highly Efficient Counter Electrode for Dye-Sensitized Solar Cells
	Cui, XJ; Xiao, JP; Wu, YH; Du, PP; Si, R; Yang, HX; Tian, HF; Li, JQ; Zhang, WH; Deng, DH; Bao, XH; Deng, DH (reprint author), Chinese Acad Sci, Dalian Inst Chem Phys, Collaborat Innovat Ctr Chem Energy Mat, State Key Lab Catalysis, Zhongshan Rd 457, Dalian 116023, Peoples R China.; Zhang, WH (reprint author), China Acad Engn Phys, Inst Chem Mat, Sichuan Res Ctr New Mat, 596 Yinhe Rd, Chengdu 610200, Peoples R China.
	2016
Source Publication	ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
ISSN	1433-7851
Volume	55 Issue:23 Pages:6707—6711
Subtype	期刊文献
Abstract	The design of catalysts that are both highly active and stable is always challenging. Herein, we report that the incorporation of single metal active sites attached to the nitrogen atoms in the basal plane of graphene leads to composite materials with superior activity and stability when used as counter electrodes in dye-sensitized solar cells (DSSCs). A series of composite materials based on different metals (Mn, Fe, Co, Ni, and Cu) were synthesized and characterized. Electrochemical measurements revealed that CoN4/GN is a highly active and stable counter electrode for the interconversion of the redox couple I-/I-3(-). DFT calculations revealed that the superior properties of CoN4/GN are due to the appropriate adsorption energy of iodine on the confined Co sites, leading to a good balance between adsorption and desorption processes. Its superior electrochemical performance was further confirmed by fabricating DSSCs with CoN4/GN electrodes, which displayed a better power conversion efficiency than the Pt counterpart.
Keyword	Oxygen Reduction Catalysis
DOI	10.1002/anie.201602097
Indexed By	SCI
Language	英语
WOS ID	WOS:000377921300022
Citation statistics	Cited Times:96[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sinap.ac.cn/handle/331007/25634
Collection	中科院上海应用物理研究所2011-2019年
Corresponding Author	Deng, DH (reprint author), Chinese Acad Sci, Dalian Inst Chem Phys, Collaborat Innovat Ctr Chem Energy Mat, State Key Lab Catalysis, Zhongshan Rd 457, Dalian 116023, Peoples R China.; Zhang, WH (reprint author), China Acad Engn Phys, Inst Chem Mat, Sichuan Res Ctr New Mat, 596 Yinhe Rd, Chengdu 610200, Peoples R China.
Recommended Citation GB/T 7714	Cui, XJ,Xiao, JP,Wu, YH,et al. A Graphene Composite Material with Single Cobalt Active Sites: A Highly Efficient Counter Electrode for Dye-Sensitized Solar Cells[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2016,55(23):6707—6711.
APA	Cui, XJ.,Xiao, JP.,Wu, YH.,Du, PP.,Si, R.,...&Zhang, WH .(2016).A Graphene Composite Material with Single Cobalt Active Sites: A Highly Efficient Counter Electrode for Dye-Sensitized Solar Cells.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,55(23),6707—6711.
MLA	Cui, XJ,et al."A Graphene Composite Material with Single Cobalt Active Sites: A Highly Efficient Counter Electrode for Dye-Sensitized Solar Cells".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 55.23(2016):6707—6711.

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