One-Pot Synthesis of a Highly Active 3-Dimensional Fe-N-x-CNTs/rGO Composite Catalyst for Oxygen Reduction

Hu, Ye1; Yang, Ruoou2; Chen, Hengquan1; Han, Shaobo3; Wang, Junhu4; Wang, Xiaojiang1; Deng, Xin1; He, Chao-Hong1; He, Qinggang1; Jiang, Zheng2; Gu, Meng3

2019-01-18

10.1002/celc.201801240

ChemElectroChem   影响因子和分区

2196-0216

A facile one-pot method to synthesize a Fe-N-x-CNTs/rGO catalyst by using melamine and FeCl2 center dot 4H(2)O as low-cost precursors is reported.The 3-dimensional porous structure and the dispersion of precursor were completed at the same time. Suitable precursor and concentration selection not only solved the aggregation of graphene but also improved its effective iron content and activity. The obtained catalysts exhibited oxygen reduction activitycomparable to commercial Pt/C with a half-wave potential (the potential when current density reaches the half of the diffusion-limited current density) at 0.875 V(vs. RHE) in alkaline media. In addition, it also showed a better stability than Pt/C with a lower decay of E-1/2 (10 mV) after 2000 cycles. From the systematic physical characterizations including aberration-corrected scanning transmission electron microscopy, Fe-57 Mossbauer spectroscopy and X-ray absorption spectroscopy, it was discovered that a unique structure with the coexistence of nitrogen-coordinated single iron atoms and Fe/Fe2C nanocrystals had been formed.

Oxygen Reduction Reaction One-pot Graphene Carbon nanotube

SCI ; EI

英语

通讯

National Natural Science Foundation of China[U1732111] ; National Natural Science Foundation of China[21676241]

Electrochemistry

Electrochemistry

WOS:000456207200030

WILEY-V C H VERLAG GMBH

20184906174607

Catalyst activity ; Electrolytic reduction ; Graphene ; High resolution transmission electron microscopy ; Iron ; Iron compounds ; Oxygen ; Scanning electron microscopy ; Transmission electron microscopy ; X ray absorption spectroscopy ; Yarn

Ore Treatment:533.1 ; Iron:545.1 ; Optical Devices and Systems:741.3 ; Nanotechnology:761 ; Chemical Products Generally:804 ; Atomic and Molecular Physics:931.3

Web of Science

1.Zhejiang Univ, Coll Chem & Biol Engn, Zhejiang Prov Key Lab Adv Chem Engn Manufacture T, Hangzhou 310027, Zhejiang, Peoples R China
2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China
3.Southern Univ Sci & Technol, Dept Mat Sci & Engn, 1088 Xueyuan Blvd, Shenzhen 518055, Guangdong, Peoples R China
4.Chinese Acad Sci, Mossbauer Effect Data Ctr, Dalian 116023, Liaoning, Peoples R China

Hu, Ye,Yang, Ruoou,Chen, Hengquan,et al. One-Pot Synthesis of a Highly Active 3-Dimensional Fe-N-x-CNTs/rGO Composite Catalyst for Oxygen Reduction[J]. ChemElectroChem,2019,6(2):504-513.

Hu, Ye.,Yang, Ruoou.,Chen, Hengquan.,Han, Shaobo.,Wang, Junhu.,...&Gu, Meng.(2019).One-Pot Synthesis of a Highly Active 3-Dimensional Fe-N-x-CNTs/rGO Composite Catalyst for Oxygen Reduction.ChemElectroChem,6(2),504-513.

Hu, Ye,et al."One-Pot Synthesis of a Highly Active 3-Dimensional Fe-N-x-CNTs/rGO Composite Catalyst for Oxygen Reduction".ChemElectroChem 6.2(2019):504-513.