Nanostructured ultrathin catalyst layer based on open-walled PtCo bimetallic nanotube arrays for proton exchange membrane fuel cells

	Nanostructured ultrathin catalyst layer based on open-walled PtCo bimetallic nanotube arrays for proton exchange membrane fuel cells
	Hong, Shaojing 1,2; Zeng, Yachao 1,2; Shao, Zhigang 1; Zhang, Hongjie 1,2; Yi, Baolian 1; Wang, Zhiqiang 1,2; Yu, Hongmei 1
刊名	NANO ENERGY
	2017-04-01
卷号	34 页码:344-355
关键词	Fuel cell Membrane electrode assembly Catalyst layer PtCo nanotube arrays Ultralow Pt loading Durability
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.
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
关键词[WOS]	OXYGEN REDUCTION REACTION ; METHANOL OXIDATION ; PLATINUM NANOTUBES ; NANOWIRE ARRAYS ; COATED MEMBRANE ; ELECTROCATALYTIC ACTIVITY ; CO ELECTROCATALYSTS ; ELECTRODE ; PERFORMANCE ; FABRICATION
收录类别	SCI
语种	英语
WOS记录号	WOS:000400383300035
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/151998]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
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
推荐引用方式 GB/T 7714	Hong, Shaojing,Zeng, Yachao,Shao, Zhigang,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.
APA	Hong, Shaojing.,Zeng, Yachao.,Shao, Zhigang.,Zhang, Hongjie.,Yi, Baolian.,...&Yu, Hongmei.(2017).Nanostructured ultrathin catalyst layer based on open-walled PtCo bimetallic nanotube arrays for proton exchange membrane fuel cells.NANO ENERGY,34,344-355.
MLA	Hong, Shaojing,et al."Nanostructured ultrathin catalyst layer based on open-walled PtCo bimetallic nanotube arrays for proton exchange membrane fuel cells".NANO ENERGY 34(2017):344-355.