Mo doped Ruddlesden-Popper Pr1.2Sr0.8NiO4+δ oxide as a novel cathode for solid oxide fuel cells

被引：4
|
作者：
Liu, Yihui [1 ,2 ]
Pan, Zhuofei [1 ,2 ]
Chen, Xiyong [3 ]
Wang, Chao [1 ,2 ]
Li, Haizhao [4 ]
机构：
[1] Wuhan Univ Technol, Hubei Key Lab Adv Technol Automot Components, Wuhan 430070, Hubei, Peoples R China
[2] Wuhan Univ Technol, Hubei Collaborat Innovat Ctr Automot Components Te, Wuhan 430070, Hubei, Peoples R China
[3] Guangxi Univ, Sch Resources Environm & Mat, Guangxi Key Lab Proc Nonferrous Met & Featured Mat, Nanning 530004, Guangxi, Peoples R China
[4] Henan Univ Sci & Technol, Sch Vehicle & Transportat Engn, Luoyang 471003, Henan, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2023年 / 931卷
基金：
中国国家自然科学基金;
关键词：
Solid oxide fuel cell; Pr1; 2Sr0; 8NiO4+; Mo-doping; Oxygen reduction activity; Electrical conductivity relaxation; ELECTROCHEMICAL PROPERTIES; SURFACE EXCHANGE; SOFC CATHODES; PERFORMANCE; KINETICS; X=0;
D O I：
10.1016/j.jallcom.2022.167557
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A new type of Ruddlesden-Popper Pr1.2Sr0.8Ni1-xMoxO4+delta (PSNMO) cathode with x = 0, 0.025, 0.050, 0.075 was prepared by the sol-gel method. The conductivity of Pr1.2Sr0.8NiO4+delta cathodes reaches the max values and then decreases the continuous increase of Mo amount in all the Mo doped cathodes. Results of elec-trochemical impedance spectroscopy show that the Pr1.2Sr0.8Ni0.950Mo0.050O4+delta has the lowest polarization resistance of 0.110 Omega cm2 at 750 degrees C among PSNMO cathodes. And results of electrical conductivity relaxation and X-ray photoelectron spectroscopy indicate that Mo-doping improves the oxygen surface exchange properties of PSNMO cathodes, which can be mainly ascribed to co-interaction of oxygen vacancy and interstitial oxygen in PSNO cathodes after Mo-doping.(c) 2022 Elsevier B.V. All rights reserved.
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页数：9
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