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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, HH; Li, HB; Zhao, XF; Liu, QF; Wang, J; Xiao, JP; Xie, SH; Si, R; Yang, F; Miao, S; Guo, XG; Wang, GX; Bao, XH
刊名: Energy & Environmental Science
出版日期: 2016
卷号: 9, 期号:12, 页码:3736-3745
DOI: 10.1039/c6ee01867j
通讯作者: Wang, GX ; Bao, XH (reprint author), 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.
文章类型: 期刊论文
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.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000392915500014
ISSN号: 1754-5692
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/26532
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Wu, HH,Li, HB,Zhao, XF,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,2016-01-01,9(12):3736-3745.
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