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题名: Preparation, characterization of ZrOxNy/C and its application in PEMFC as an electrocatalyst for oxygen reduction
作者: Liu, Gang;  Zhang, Hua Min;  Wang, Mei Ri;  Zhong, He Xiang;  Chen, Jian
关键词: zirconium oxynitride ;  noble-metal free electrocatalyst ;  oxygen reduction reaction ;  cathode ;  fuel cell
刊名: JOURNAL OF POWER SOURCES
发表日期: 2007-10-25
DOI: 10.1016/j.jpowsour.2007.07.067
卷: 172, 期:2, 页:503-510
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Electrochemistry ;  Energy & Fuels
研究领域[WOS]: Electrochemistry ;  Energy & Fuels
英文摘要: In this paper, a noble-metal-free electrocatalyst based on carbon-supported zirconium oxynitride (ZrOxNy/C) was prepared by ammonolysis of carbon-supported zirconia (ZrO2/C) at 950 degrees C and investigated as cathode electrocatalyst towards oxygen reduction reaction (ORR) in PEMFCs. The electrocatalyst was characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM) techniques. The catalytic activity of the catalyst towards ORR was investigated by using the rotating disk electrode (RDE) technique in an O-2-saturated 0.5 M H2SO4 solution. The ZrOxNy/C electrocatalyst presented attractive catalytic activity for ORR. The onset potential of ZrOxNy/C electrocatalyst for oxygen reduction was 0.7 V versus RHE and the four-electron pathway for the ORR was achieved on the surface of ZrOxNy/C electrocatalyst. The ZrOxNy/C electrocatalyst showed a comparatively good cell performance to ORR in PEMFCs, especially when operated at a comparatively high temperature. (c) 2007 Elsevier B.V. All rights reserved.
关键词[WOS]: SUPPORTED PT-NI ;  FUEL-CELL ;  CATALYSTS ;  ALLOY ;  ELECTRODES ;  CATHODE ;  NANOPARTICLES ;  NITRIDES ;  CARBIDES ;  PHASE
语种: 英语
WOS记录号: WOS:000250654700002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140739
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, Lab PEMFC Key Mat & Technol, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Liu, Gang,Zhang, Hua Min,Wang, Mei Ri,et al. Preparation, characterization of ZrOxNy/C and its application in PEMFC as an electrocatalyst for oxygen reduction[J]. JOURNAL OF POWER SOURCES,2007,172(2):503-510.
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