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

doi:10.1002/anie.201602097

	A Graphene Composite Material with Single Cobalt Active Sites: A Highly Efficient Counter Electrode for Dye-Sensitized Solar Cells
	Cui, Xiaoju 2; Xiao, Jianping 2; Wu, Yihui 3; Du, Peipei 1; Si, Rui 1; Yang, Huaixin 4; Tian, Huanfang 4; Li, Jianqi 4; Zhang, Wen-Hua 3; Deng, Dehui 2
刊名	ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
	2016-06-01
卷号	55 期号:23 页码:6707-6711
关键词	Cobalt Composite Materials Counter Electrode Dye-sensitized Solar Cells Graphene
ISSN号	1433-7851
DOI	10.1002/anie.201602097
文献子类	Article
英文摘要	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.
WOS关键词	OXYGEN REDUCTION ; CATALYSIS
WOS研究方向	Chemistry
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000377921300022
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/170546]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Zhang, Wen-Hua; Deng, Dehui
作者单位	1.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China 2.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 3.China Acad Engn Phys, Inst Chem Mat, Sichuan Res Ctr New Mat, 596 Yinhe Rd, Chengdu 610200, Peoples R China 4.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Cui, Xiaoju,Xiao, Jianping,Wu, Yihui,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, Xiaoju.,Xiao, Jianping.,Wu, Yihui.,Du, Peipei.,Si, Rui.,...&Bao, Xinhe.(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, Xiaoju,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.