阳极
非阻塞I/O
材料科学
固体氧化物燃料电池
镍
电解质
阴极
无机化学
镧
氨
化学工程
化学
冶金
催化作用
电极
物理化学
生物化学
工程类
有机化学
作者
Andrew C. Chien,Willy Y. Chen,Mike S. Zheng
出处
期刊:Journal of The Electrochemical Society
[The Electrochemical Society]
日期:2023-04-01
卷期号:170 (4): 044505-044505
被引量:5
标识
DOI:10.1149/1945-7111/accbef
摘要
A protonic ceramic fuel cell (PCFC) and a solid oxide fuel cell (SOFC) using NiO/BZCY and NiO/YSZ anodes, respectively, were compared in H 2 and NH 3 fuels at 600 °C. The effect on the cell performance by adding lanthanum strontium ruthenium titanate (LSRT) into the anode were investigated. The performance of PCFCs in NH 3 was found to resemble that in H 2 and remain stable; by contrast, the SOFC was subject to a rigorous fluctuation of voltages in NH 3 , followed by performance loss. Surface characterization evidenced that phase separation between nickel and electrolyte YSZ is a major reason to the deactivation of SOFCs. The structure degradation occurred due to repetitive nitridation of nickel and subsequent oxidation reaction. Despite containing nickel in the anode too, the PCFC experienced the little effect since the oxidation reaction occurs at the cathode. Furthermore, the addition of the LSRT helped stabilize the PCFC anode by facilitating decomposition of ammonia with exsolved ruthenium sites, which are characterized by temperature programmed reaction studies.
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