将La0.7Ca0.3Cr0.97O3-δ (LCC)连接材料引入到NiO/YSZ阳极中, 制备NiO/YSZ/LCC 三相复合阳极, 并进行烧结特性、微观结构、电导率、热膨胀系数等性能对比测试. 结果表明, NiO/YSZ/LCC新型复合阳极具有优良的综合性能. 采用浆料浸渍法在NiO/YSZ/LCC阳极支撑体两个表面上分别制备LCC和YSZ湿膜, 1400℃空气条件下三层共烧4 h后, 获得致密LCC连接体和YSZ电解质薄膜.
Developing cost-effective methods to prepare dense ceramic interconnect membrane for solid oxide fuel cell (SOFC) stacks is currently considered as a major technical obstacle. In order to improve the co-firing compatibility of LaCrO3-based interconnects with the traditional YSZ-based SOFC anode support NiO/YSZ, interconnect material of La0.7Ca0.3Cr0.97O3-δ(LCC) was introduced to NiO/YSZ anode. Triple-phase composite NiO/YSZ/LCC was prepared, and then examined as novel anode support. Sintering character, microstructure, electrical conductivity, and thermal expansion coefficient of the composite anode were investigated in detail as a function of LCC addition, respectively. Results indicated that the NiO/YSZ/LCC composite anode had excellent overall performance. Furthermore, by using a simple drop-coating process, LCC and YSZ wet membranes were prepared on the opposite surfaces of NiO/YSZ/LCC support, respectively. Followed by three-layer co-firing at 1400℃ in air for 4 h, dense La0.7Ca0.3Cr0.97O3-δ interconnect and YSZ electrolyte thin membranes were both successfully prepared on the porous NiO/YSZ/LCC anode support. This work presents a simple drop-coating/three-layer co-firing technical route for developing dense interconnect and electrolyte membranes for YSZ-based SOFC stacks.
[1] Hua B, Zhang J F, Lu F S, Kong Y H, Pu J, Li J. Acta Metall Sin, 2009; 45: 605
(华 斌, 张建福, 卢凤双, 孔永红, 蒲 健, 李 箭. 金属学报, 2009; 45: 605)
[2] Kyung J Y, Stevenson J W, Marina O A. J Power Sources, 2011; 196: 8531
[3] Zhu W Z, Deevi S C. Mater Sci Eng, 2003; A348: 227
[4] Lu M F, Tsipis E V, Waerenborgh J C, Yaremchenko A A, Kolotygin V A, Bredikhin S, Kharton V V. J Power Sources, 2012; 206: 59
[5] Zhong Z. Solid State Ionics, 2006; 177: 757
[6] Wang S L, Lin B, Xie K, Dong Y C, Liu X Q, Meng G Y. J Alloys Compd, 2009; 468: 499
[7] Zhou X L, Deng F J, Zhu M X, Meng G Y, Liu X Q. J Power Sources, 2007; 164: 293
[8] Wang S L, Liu M F, Dong Y C, Xie K, Liu X Q, Meng G Y. Mater Res Bull, 2008; 43: 2607
[9] Sakai N, Yokokawa H, Horita T, Yamaji K. Int J Appl Ceram Technol, 2004; 1: 23
[10] Jeffrey W F. Solid State Ionics, 2004; 171: 1
[11] Liu M F, Zhao L, Dong D H, Wang S L, Juan D W, Liu X Q, Meng G Y. J Power Sources, 2008; 177: 451
[12] Liu Y J, Ding X F, Gao L, Guo L C.J Nanjing Univ Technol (Nat Sci Ed), 2008; 30: 14
(刘颖佳, 丁锡锋, 高 凌, 郭露村. 南京工业大学学报(自然科学版), 2008; 30: 14)
[13] Zhou X L, Ma J J, Deng F J, Meng G Y, Liu X Q. Solid State Ionics, 2007; 177: 3461
[14] Simner S P, Hardy J S, Stevenson J W, Armstrong T R. Solid State Ionics, 2000; 128: 53
[15] Athawale A A, Desai P A. Ceram Int, 2011; 37: 3037
[16] Mori M, Hiei Y, Sammes N M. Solid State Ionics, 1999; 123: 103
[17] Pal U B. Solid State Ionics, 1992; 52: 227
[18] Kuo L J H, Vora S D, Singhal S C. J Am Ceram Soc, 1997; 80: 589
[19] Li M H, Liu R Q. Chin J Inorg Chem, 2008; 24: 195
(李茂华, 刘瑞泉. 无机化学学报, 2008; 24: 195)
[20] Tao S W, Irvine J T S. Nat Mater, 2003; 2: 320
[21] Liu M F, Dong D H, Peng R R, Gao J F, Juan D W, Liu X Q, Meng G Y. J Power Sources, 2008; 180: 215
[22] Liu M F, Dong D H, Zhao F, Gao J F, Ding D, Liu X Q, Meng G Y. J Power Sources, 2008; 182: 585
[23] Chick L A, Liu J, Stevenson J W, Armstrong T R, McCready D E, Maupin G D, Coffey G W, Coyle C A. J Am Ceram Soc, 1997; 80: 2109
[24] Chakraborty A, Basu R N, Maiti H S. Mater Lett, 2000; 45: 162
[25] Wang S L, Lin B, Chen Y H, Liu X Q, Meng G Y. J Alloys Compd, 2009; 479: 764
