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题名: Highly doped and exposed Cu(I)-N active sites within graphene towards efficient oxygen reduction for zinc-air batteries
作者: Wu, Haihua1, 2;  Li, Haobo1, 2;  Zhao, Xinfei1, 2;  Liu, Qingfei1, 2;  Wang, Jing1;  Xiao, Jianping1;  Xie, Songhai3;  Si, Rui4;  Yang, Fan1;  Miao, Shu1;  Guo, Xiaoguang1;  Wang, Guoxiong1;  Bao, Xinhe1
刊名: Energy & Environmental Science
发表日期: 2016
DOI: 10.1039/c6ee01867j
卷: 9, 期:12, 页:3736-3745
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology ;  Life Sciences & Biomedicine
类目[WOS]: Chemistry, Multidisciplinary ;  Energy & Fuels ;  Engineering, Chemical ;  Environmental Sciences
研究领域[WOS]: Chemistry ;  Energy & Fuels ;  Engineering ;  Environmental Sciences & Ecology
英文摘要: A coordinatively unsaturated copper-nitrogen architecture in copper metalloenzymes is essential for its capability to catalyze the oxygen reduction reaction (ORR). However, the stabilization of analogous active sites in realistic catalysts remains a key challenge. Herein, we report a facile route to synthesize highly doped and exposed copper(I)-nitrogen (Cu(I)-N) active sites within graphene (Cu-N(C)C) by pyrolysis of coordinatively saturated copper phthalocyanine, which is inert for the ORR, together with dicyandiamide. Cu(I)-N is identified as the active site for catalyzing the ORR by combining physicochemical and electro-chemical studies, as well as density function theory calculations. The graphene matrix could stabilize the high density of Cu(I)-N active sites with a copper loading higher than 8.5 wt%, while acting as the electron-conducting path. The ORR activity increases with the specific surface area of the Cu-N(C)C catalysts due to more exposed Cu(I)-N active sites. The optimum Cu-N(C)C catalyst demonstrates a high ORR activity and stability, as well as an excellent performance and stability in zinc-air batteries with ultralow catalyst loading.
关键词[WOS]: ATOMICALLY DISPERSED PALLADIUM ;  COPPER-DIOXYGEN COMPLEXES ;  CYTOCHROME-C-OXIDASE ;  ALKALINE MEDIA ;  CATHODE CATALYST ;  MANGANESE OXIDES ;  WATER OXIDATION ;  CARBON-BLACK ;  FUEL-CELLS ;  NITROGEN
语种: 英语
WOS记录号: WOS:000392915500014
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/151888
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, CAS Ctr Excellence Nanosci, Dalian Natl Lab Clean Energy,State Key Lab Cataly, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Fudan Univ, Shanghai Key Lab Mol Catalysis & Innovat Mat, Dept Chem, Shanghai 200433, Peoples R China
4.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai, Peoples R China

Recommended Citation:
Wu, Haihua,Li, Haobo,Zhao, Xinfei,et al. Highly doped and exposed Cu(I)-N active sites within graphene towards efficient oxygen reduction for zinc-air batteries[J]. Energy & Environmental Science,2016,9(12):3736-3745.
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