Electrochemical performance of a mechanochemically prepared submicron-sized crystalline Nd1.8Ce0.2CuO4±δ cathode for intermediate temperature solid oxide fuel cells

被引：11
|
作者：
Khandale, A. P. [1 ]
Bhoga, S. S. [1 ]
机构：
[1] RTM Nagpur Univ, Dept Phys, Nagpur 440033, Maharashtra, India
来源：
ELECTROCHIMICA ACTA | 2011年 / 56卷 / 25期
关键词：
Cathode; Mixed-ionic-electronic conductors (MIECs); dc conductivity; Electrochemical impedance spectroscopy (EIS); Intermediate temperature solid oxide fuel cell (IT-SOFC); Area specific resistance (ASR); SUBSTITUTED ND2CUO4; OXYGEN;
D O I：
10.1016/j.electacta.2011.07.130
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
To produce a Nd 1.8Ce 0.2CuO 4±δ solid solution, the oxide form of the reagents were milled for 36 h and sintered at 1173 K for 8 h in a microwave furnace. The transition from a negative temperature coefficient (NTC) of conductivity to a positive temperature coefficient (PTC) was suppressed due to the submicron size of the crystallites. The low-frequency response in the complex impedance plane fit the Gerischer element. At 973 K, the area specific resistance (ASR) of Nd 1.8Ce 0.2CuO 4±δ/GDC/Nd 1.8Ce 0.2CuO 4±δ sintered at 1073 K for 2 h was 1.92 ohm cm 2. © 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：9219 / 9223
页数：5
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