铁/氮共掺杂石墨烯的制备及氧还原催化活性

doi:10.11896/cldb.18120110

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Abstract Aiming at making the oxygen reduction reaction of direct methanol fuel cell (DMFC) dynamically easier and reducing the utilization of commercial Pt/C catalysts, we introduced the Fe/N-codoped graphene (Fe/NG) to the DMFC as catalyst for oxygen reduction reaction (ORR), and investigated the synthesis approach and ORR catalytic performance of Fe/NG. Firstly, Fe ions absorbed polyaniline/graphene oxide was hydrothermally treated, subsequent heat treatments at 700 ℃, 800 ℃ and 900 ℃ in nitrogen atmosphere were carried out, and a series of Fe/N-codoped graphene composites (Fe/NG-700, Fe/NG-800 and Fe/NG-900) were obtained. Then, analysis of the Fe/NG products by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) proved that Fe element existed in the form of iron metal and ferric tetroxide, and nitrogen species primarily consisted of pyridine nitrogen and graphite nitrogen. Finally, the ORR catalytic activity and mechanism of the Fe/NG pro-ducts were measured by means of cyclic voltammetry (CV), rotating disk electrode (RDE) and rotating ring disk electrode (RRDE) in oxygen-saturated 0.1 mol/L KOH alkaline solution. It is demonstrated that the ORR catalyzed by Fe/NG-700, Fe/NG-800 and Fe/NG-900 showed four electron process with a hydrogen peroxide yield close to 0. Compared with 20% Pt/C, Fe/NG-700, Fe/NG-800 and Fe/NG-900 exhibited comparable activity and stability, superior methanol tolerance, which made Fe/NG a promising catalyst for direct methanol fuel cell.

Key words： oxygen reduction reaction Fe/N-codoped graphene four electron process stability methanol tolerance

Published: 25 January 2020 Online: 2020-01-03

CLC number:

TB321

About author: Guangbin Zhureceived his B.E. degree in Chemical Engineer and Technology from Pingding Shan University in 2016. He is currently pursuing his master's degree under supervision of Professor Kun Luo and Dr. Zhihong Luo at Guilin University of Technology. He is mainly focused on new energy materials;Zhihong Luoobtained her Ph.D. degree from Huazhong University of Science and Technology in 2014. She is a lecturer in Guilin University of Technology. Dr Luo’s research interest is now focused on new energy materials, supercapacitors, fuel cells and lithium-air batteries. She has achieved a number of innovative results, and published more than 20 journal papers and patents;Kun Luoobtained his M.S. and Ph.D. degrees in Materials Science and Engineering from Chinese Academy of Science in 2000 and 2004, respectively. Professor Kun Luo worked in Guilin University of Technology from 2008 to 2018, and in Changzhou University now. He focuses on new energy storage materials and has published more than 100 research papers in journals such as Adv. Mater., Chem. Commun., Chem. Mater., J. Mater. Chem. A,et al.

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	ZHU Guangbin
	BIAN Zhicheng
	HE Yulin
	LI Qianjin
	GUO Lulu
	LUO Zhihong
	LUO Kun

Cite this article:

ZHU Guangbin,BIAN Zhicheng,HE Yulin, et al. Synthesis and Catalytic Performance Towards Oxygen Reduction of Fe/N Codoped Graphene[J]. Materials Reports, 2020, 34(2): 2010-2016.

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http://www.mater-rep.com/EN/10.11896/cldb.18120110 OR http://www.mater-rep.com/EN/Y2020/V34/I2/2010

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