(Pr0.9La0.1)2(Ni0.74Cu0.21Ga0.05)O4+δ as cathode material for CeO2-based intermediate-temperature solid-oxide fuel cell

被引：17

作者：

Wang, Yaxin ^{[1
,2
]}

Zhao, Xiaoyu ^{[1
,2
]}

Lu, Shiquan ^{[1
,2
]}

Yu, Bo ^{[1
,2
]}

Meng, Xiangwei ^{[1
,2
,3
]}

Zhang, Yongjun ^{[1
,2
]}

Yang, Jinghai ^{[1
,2
]}

Fu, Chengwei ^{[2
,3
]}

Ji, Yuan ^{[2
,3
]}

机构：

[1] Jilin Normal Univ, Inst Condensed State Phys, Siping 136000, Peoples R China

[2] Jilin Normal Univ, Minist Educ, Key Lab Funct Mat Phys & Chem, Siping 136000, Peoples R China

[3] Jilin Univ, State Key Lab Superhard Mat, Changchun 130051, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2014年 / 40卷 / 05期

关键词：

Thermal expansion; Cathode; Electrochemical performance; Solid-oxide fuel cells; OXYGEN REDUCTION-MECHANISM; ELECTROCHEMICAL PROPERTIES; COMPOSITE CATHODE; PEROVSKITE OXIDE; PERFORMANCE; ELECTROLYTE; DIFFUSION; LNBACO(2)O(5+DELTA);

D O I：

10.1016/j.ceramint.2013.12.074

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

(Pr0.9La0.1)(2)Ni0.74Cu0.21Ga0.05O4+delta (PLNCG) has been investigated as a potential cathode material based on Ce0.9Gd0.1O2-delta (CGO) electrolyte for intermediate-temperature solid-oxide fuel cells (IT-SOFC). X-ray diffraction analysis reveals that PLNCG powders with K2NiF4-type structure can be obtained from calcining the precursors at 950 degrees C for 10 h in air. The thermal expansion coefficient (TEC) value of PLNCG is 12.45 x 10(-6) K-1, which is extremely close to that of CGO (12.39 x 10(-6) K-1). The PLNCG material exhibits a semiconductor-to-metal transition around 400 degrees C. The value of area specific resistance (ASR) is 0.249, 0.118, 0.063 and 0.037 Omega cm(2) at 650, 700, 750, 800 degrees C, respectively. The CGO electrolyte-supported fuel cell is prepared using PLNCG as cathode and NiO-CGO (65:35 by weight) as anode. The maximum power densities of the single-cell reach 407, 266 and 201 mW cm(-2) at 800, 750, and 700 degrees C, respectively. These results indicate that the PLNCG can be a good candidate for cathode materials of IT-SOFC based on CGO electrolyte. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：7321 / 7327

页数：7

共 42 条

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