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题名: Nanostructured ultrathin catalyst layer based on open-walled PtCo bimetallic nanotube arrays for proton exchange membrane fuel cells
作者: Zeng, Yachao1, 2;  Shao, Zhigang1;  Zhang, Hongjie1, 2;  Wang, Zhiqiang1, 2;  Hong, Shaojing1, 2;  Yu, Hongmei1;  Yi, Baolian1
关键词: Fuel cell ;  Membrane electrode assembly ;  Catalyst layer ;  PtCo nanotube arrays ;  Ultralow Pt loading ;  Durability
刊名: NANO ENERGY
发表日期: 2017-04-01
DOI: 10.1016/j.nanoen.2017.02.038
卷: 34, 页:344-355
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary ;  Physics, Applied
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science ;  Physics
英文摘要: Nanostructured ultrathin catalyst layer based on open-walled PtCo bimetallic nanotube arrays has been designed and constructed through a hydrothermal and physical vapor deposition method for proton exchange membrane fuel cells (PEMFCs). The open-walled PtCo bimetallic NTAs with a diameter ca. 100 nm were directly aligned with proton exchange membrane, forming an ultrathin catalyst layer with a thickness ca. 300 nm. The incorporation of Co in Pt is realized by a facile thermal annealing method, endowing the catalyst layer with improved activity. During the purification of catalyst-coated-membrane (CCM) electrode, the sealed off PtCo nanotubes cracked into open-walled nanotubes, making both the interior and exterior surfaces exposed to the surroundings. The catalyst layer is binder-free and beneficial for exposing catalytic active sites, enhancing mass transport during the operation of PEMFCs. Serving as cathode, a maximum power density of 14.38 kW g(Pt)(-1) was achieved with a cathodic Pt loading of 52.7 mu g cm(-2), which is 1.7 fold higher than the conventional CCM. Accelerated degradation test (ADT) manifests that the prepared nanostrucutred ultrathin catalyst layer is more stable than the conventional CCM. The proposed catalyst layer structure and also its preparation method hold great potential for PEMFCs and other applications.
关键词[WOS]: OXYGEN REDUCTION REACTION ;  METHANOL OXIDATION ;  PLATINUM NANOTUBES ;  NANOWIRE ARRAYS ;  COATED MEMBRANE ;  ELECTROCATALYTIC ACTIVITY ;  CO ELECTROCATALYSTS ;  ELECTRODE ;  PERFORMANCE ;  FABRICATION
语种: 英语
WOS记录号: WOS:000400383300035
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/151998
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, Fuel Cell Syst & Engn Lab, Dalian 116023, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Zeng, Yachao,Shao, Zhigang,Zhang, Hongjie,et al. Nanostructured ultrathin catalyst layer based on open-walled PtCo bimetallic nanotube arrays for proton exchange membrane fuel cells[J]. NANO ENERGY,2017,34:344-355.
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