Low-Temperature Ammonia Decomposition Catalysts for Direct Ammonia Solid Oxide Fuel Cells

doi:10.1149/1945-7111/ab7b5b

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	Low-Temperature Ammonia Decomposition Catalysts for Direct Ammonia Solid Oxide Fuel Cells
	Wang, Yuanhui ; Yang, Jun ; Wang, Jianxin ; Guan, Wanbing ; Chi, Bo ; Jia, Lichao ; Chen, Jieyu ; Muroyama, Hiroki ; Matsui, Toshiaki ; Eguchi, Koichi
刊名	JOURNAL OF THE ELECTROCHEMICAL SOCIETY
	2020
卷号	167 期号:6
关键词	ON-SITE GENERATION NI-YSZ ANODE NH3 DECOMPOSITION PERFORMANCE HYDROGEN NICKEL NANOPARTICLES COMPOSITE OXIDATION SURFACE
DOI	10.1149/1945-7111/ab7b5b
英文摘要	Ammonia is regarded as a promising alternative fuel for solid oxide fuel cells (SOFCs) compared with hydrogen due to its low cost and ease for transportation and storage. The conventional anode Ni/yttria-stabilized zirconia (Ni/YSZ) of SOFCs can serve as an efficient catalyst for ammonia decomposition at high temperatures above 700 degrees C but its catalytic activity decreases rapidly at lower temperatures, leading to an undesirable degradation of cell performance. Here we report a low-temperature ammonia decomposition catalyst Ba-modified Ni/yttria-stabilized zirconia (Ba-Ni/YSZ) prepared by a one-pot solid-liquid (SL) method. Enhanced performance can be obtained for Ba-Ni/YSZ compared with that of Ni/YSZ catalysts, indicating that the addition of Ba promotes the catalytic activity. X-ray photoelectron spectroscopy (XPS) and Temperature-programmed reduction with H-2 (H-2-TPR) characterizations of Ba-Ni/YSZ catalysts indicate that Ba changes the electronic structure of Ni and facilitates the interaction between Ni and support. The kinetics analysis demonstrates that the modification by a small amount of Ba species alleviated the negative effect of the hydrogen poisoning on the active sites of Ni/YSZ catalysts. Besides, the Ba-Ni/YSZ catalyst is introduced into the flat-tube SOFC with symmetric double-sided cathodes (DSC), and significantly improves the electrochemical performance of directly ammonia-fed DSC cells at low temperatures. (C) 2020 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.
学科主题	Electrochemistry ; Materials Science
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/19863]
专题	2020专题
作者单位	1.Chen, JY (corresponding author), China Univ Geosci, Fac Mat Sci & Chem, Wuhan 430074, Peoples R China. 2.Yang, J (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China.
推荐引用方式 GB/T 7714	Wang, Yuanhui,Yang, Jun,Wang, Jianxin,et al. Low-Temperature Ammonia Decomposition Catalysts for Direct Ammonia Solid Oxide Fuel Cells[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY,2020,167(6).
APA	Wang, Yuanhui.,Yang, Jun.,Wang, Jianxin.,Guan, Wanbing.,Chi, Bo.,...&Eguchi, Koichi.(2020).Low-Temperature Ammonia Decomposition Catalysts for Direct Ammonia Solid Oxide Fuel Cells.JOURNAL OF THE ELECTROCHEMICAL SOCIETY,167(6).
MLA	Wang, Yuanhui,et al."Low-Temperature Ammonia Decomposition Catalysts for Direct Ammonia Solid Oxide Fuel Cells".JOURNAL OF THE ELECTROCHEMICAL SOCIETY 167.6(2020).