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题名: A high-performance PEM fuel cell with ultralow platinum electrode via electrospinning and underpotential deposition
作者: Hong, Shaojing1, 2;  Hou, Ming1;  Zhang, Hongjie1, 2;  Jiang, Yongyi1, 2;  Shao, Zhigang1;  Yi, Baolian1
关键词: proton exchange membrane fuel cell ;  electrospun electrode ;  underpotential deposition
刊名: ELECTROCHIMICA ACTA
发表日期: 2017-08-10
DOI: 10.1016/j.electacta.2017.05.066
卷: 245, 页:395-401
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Electrochemistry
研究领域[WOS]: Electrochemistry
英文摘要: A novel PEMFC electrode (E-U electrode) with ultralow platinum is prepared by electrospinning and underpotential deposition techniques. The platinum skin (Ptskin) is in situ deposited on the surface of Pd nanoparticle in the electrospun Pd/ C catalyst layer. The energy-dispersive X-ray spectroscopy (EDS) mapping of the cross-section of a single fiber confirms that the distribution of Pd/C@ Pt-skin catalysts and Nafion1 ionomer matches well in the E-U electrode. The high porosity and large electrochemical surface area (ECSA) of the E-U electrode mitigates the oxygen transfer resistance. The peak power density of the E-U electrode arrives at 0.62 W cm(-2) with a Pt loading of 19 mg cm(-2), which is higher than that of the conventional electrode (0.55 W cm(-2)) with a Pt loading of 100 mg cm(-2). The degradation rate of peak power density of the E-U electrode is only 4.8% after accelerated stability test (AST) for 30000 cyclic voltammetry (CV) cycles, demonstrating a better durability than that of the conventional electrode. The enhanced durability of the E-U electrode is attributed to nanofiber structure and interaction between Pd and Pt in the Pd/C@ Pt-skin catalyst. (C) 2017 Published by Elsevier Ltd.
关键词[WOS]: OXYGEN REDUCTION REACTION ;  SUPPORTED PD NANOPARTICLES ;  CORE-SHELL ;  MONOLAYER ELECTROCATALYSTS ;  O-2 REDUCTION ;  CATALYSTS ;  CATHODE ;  LAYER ;  NANOSTRUCTURES ;  RESISTANCE
语种: 英语
WOS记录号: WOS:000406762700043
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/149808
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, Dalian Natl Lab Clean Energy, Fuel Cell Syst & Engn Lab, Dalian 116023, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Hong, Shaojing,Hou, Ming,Zhang, Hongjie,et al. A high-performance PEM fuel cell with ultralow platinum electrode via electrospinning and underpotential deposition[J]. ELECTROCHIMICA ACTA,2017,245:395-401.
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