共 53 条
3D interconnected hierarchical porous N-doped carbon constructed by flake-like nanostructure with Fe/Fe3C for efficient oxygen reduction reaction and supercapacitor
被引:100
作者:

Li, Guoning
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Tianjin Univ, Sch Chem Engn & Technol, Chem Engn Res Ctr, State Key Lab Chem Engn, Tianjin 300072, Peoples R China Tianjin Univ, Sch Chem Engn & Technol, Chem Engn Res Ctr, State Key Lab Chem Engn, Tianjin 300072, Peoples R China

Zhang, Jiajun
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Tianjin Univ, Sch Chem Engn & Technol, Chem Engn Res Ctr, State Key Lab Chem Engn, Tianjin 300072, Peoples R China Tianjin Univ, Sch Chem Engn & Technol, Chem Engn Res Ctr, State Key Lab Chem Engn, Tianjin 300072, Peoples R China

Li, Weisong
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Tianjin Univ, Sch Chem Engn & Technol, Chem Engn Res Ctr, State Key Lab Chem Engn, Tianjin 300072, Peoples R China Tianjin Univ, Sch Chem Engn & Technol, Chem Engn Res Ctr, State Key Lab Chem Engn, Tianjin 300072, Peoples R China

Fan, Kai
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Tianjin Univ, Sch Chem Engn & Technol, Chem Engn Res Ctr, State Key Lab Chem Engn, Tianjin 300072, Peoples R China Tianjin Univ, Sch Chem Engn & Technol, Chem Engn Res Ctr, State Key Lab Chem Engn, Tianjin 300072, Peoples R China

Xu, Chunjian
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h-index: 0
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Tianjin Univ, Sch Chem Engn & Technol, Chem Engn Res Ctr, State Key Lab Chem Engn, Tianjin 300072, Peoples R China Tianjin Univ, Sch Chem Engn & Technol, Chem Engn Res Ctr, State Key Lab Chem Engn, Tianjin 300072, Peoples R China
机构:
[1] Tianjin Univ, Sch Chem Engn & Technol, Chem Engn Res Ctr, State Key Lab Chem Engn, Tianjin 300072, Peoples R China
来源:
关键词:
METAL-FREE ELECTROCATALYSTS;
HIGHLY EFFICIENT;
NANOPOROUS CARBONS;
ORGANIC FRAMEWORK;
ACTIVE-SITES;
NITROGEN;
FE;
GRAPHENE;
ENERGY;
ZIF-8;
D O I:
10.1039/c8nr02337a
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Hierarchical porous N-doped carbon with Fe/Fe3C nanoparticles, high content of N dopants (10.51 wt%), and a 3D interconnected porous architecture constructed by flake-like nanostructure was facilely prepared by carbonization of a zeolitic imidazolate framework-8 (ZIF-8) as a self-sacrificing template and potassium ferricyanide (PF) as a multifunctional iron precursor. The unique porous structure can offer a continuous pathway for electron transfer and shorten the mass transfer pathway, which contribute to both an oxygen reduction reaction (ORR) and a supercapacitor. The influence of the carbonization temperature and iron content on the performance of ORR and supercapacitor was investigated. The asprepared composites carbonized at 800 degrees C (Fe-CZIF-800-10) displayed comparable ORR activity with Pt/C in alkaline media as well as excellent long-term stability, superb methanol tolerance, and appreciable onset potential in acid media. Moreover, Fe-CZIF-800-10 exhibited excellent capacity of 246 F g(-1) at a current density of 0.5 A g(-1) and stability in 6 M KOH. This report provides a facile approach to prepare hierarchical porous Fe/N-doped carbon as a promising electrode material for both fuel cell and supercapacitor applications.
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页码:9252 / 9260
页数:9
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