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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 PublicationANGEWANDTE CHEMIE-INTERNATIONAL EDITION
ISSN1433-7851
Volume55Issue:23Pages:6707—6711
Subtype期刊文献
AbstractThe 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.
KeywordOxygen Reduction Catalysis
DOI10.1002/anie.201602097
Indexed BySCI
Language英语
WOS IDWOS:000377921300022
Citation statistics
Cited Times:73[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/25634
Collection中科院上海应用物理研究所2011-2018年
Corresponding AuthorDeng, 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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