固体氧化物燃料电池阳极的相转化流延制备和电化学性能研究

doi:10.15541/jim20150225

无机材料学报 ›› 2015, Vol. 30 ›› Issue (12): 1291-1294.DOI: 10.15541/jim20150225 CSTR: 32189.14.10.15541/jim20150225

固体氧化物燃料电池阳极的相转化流延制备和电化学性能研究

张玉月¹, 蔺杰¹, 苗国栓², 高建峰¹, 陈初升¹, 夏长荣¹, 占忠亮², 王绍荣²

(1. 中国科学技术大学材料科学与工程系, 中科院能量转换材料重点实验室, 合肥 230026; 2. 中国科学院上海硅酸盐研究所, 中科院能量转换材料重点实验室, 上海 200050)

收稿日期:2015-05-11 修回日期:2015-06-16 出版日期:2015-12-20 网络出版日期:2015-11-24
作者简介:张玉月(1991–), 女, 硕士研究生. E-mail: zyy0612@mail.ustc.edu.cn
基金资助:
国家自然科学基金(21176230, 51572255) National Natural Science Foundation of China(21176230, 51572255)

Phase Inversion Tape Casting and Electrochemical Performance of Solid Oxide Fuel Cell Anode

ZHANG Yu-Yue¹, LIN Jie¹, MIAO Guo-Shuan², GAO Jian-Feng¹, CHEN Chu-Sheng¹, XIA Chang-Rong¹, ZHAN Zhong-Liang², WANG Shao-Rong²

(1. CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China; 2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China)

Received:2015-05-11 Revised:2015-06-16 Published:2015-12-20 Online:2015-11-24
About author:ZHANG Yu-Yue. E-mail: zyy0612@mail.ustc.edu.cn

摘要/Abstract

摘要：

采用相转化流延一步制备了NiO-Zr_0.84Y_0.16O_2-_δ (YSZ)阳极支撑层和功能层, 前者厚度为~700 μm, 含有沿厚度方向定向排列的开放直孔, 后者厚度为~60 μm。采用浆料涂膜法和高温共烧在阳极上制备厚度为15 μm的YSZ电解质薄膜, 丝网印刷制备YSZ-La_0.84Sr_0.16MnO_3-_δ (LSM)(质量比50:50)阴极。所制备的单电池显示出较高的电输出性能。以H₂-3%H₂O为燃料和环境空气为氧化剂, 800 ℃时电池的峰功率密度达到891 mW/cm², 电池即使在高电流密度测试条件下也未出现明显的浓差极化, 这是由于其阳极具有开放直孔结构, 气相输运阻力小。

关键词: 固体氧化物燃料电池, 阳极支撑体, 相转化流延, 浓差极化

Abstract:

For an anode-supported solid oxide fuel cell (SOFC), the anode consists of a thick support layer with large pores and a thin functional layer with small pores. In the present work, the anode of NiO and yttria-stabilized zirconia (YSZ) comprising a porous support layer of ~700 μm thick and a functional layer of ~60 μm thick were formed in a single step using the phase inversion tape casting method. For the as-prepared anode, the support layer contained large open pores which were aligned along the thickness direction. A thin dense YSZ electrolyte layer with a thickness of 15 μm was deposited onto the anode by dip-coating and co-sintering techniques. A composite cathode of YSZ-La_0.8Sr_0.2MnO_3-_δ (LSM) with a weight ratio of 50:50 was screen-printed on the surface of the YSZ electrolyte layer. The resulting fuel cell exhibited promising electrochemical performance. A maximum power density of 891 mW/cm² was obtained at 800 ℃ using H₂-3% H₂O as the fuel and ambient air as the oxidant. The cell did not show any sign of concentration polarization even at high current densities, which should be attributed to the open straight pore structure and resultant fast gas-phase transport in the anode support.

Key words: SOFC, anode support, phase inversion-tape casting, concentration polarization

中图分类号:

TQ174
TM911

张玉月, 蔺杰, 苗国栓, 高建峰, 陈初升, 夏长荣, 占忠亮, 王绍荣. 固体氧化物燃料电池阳极的相转化流延制备和电化学性能研究[J]. 无机材料学报, 2015, 30(12): 1291-1294.

ZHANG Yu-Yue, LIN Jie, MIAO Guo-Shuan, GAO Jian-Feng, CHEN Chu-Sheng, XIA Chang-Rong, ZHAN Zhong-Liang, WANG Shao-Rong. Phase Inversion Tape Casting and Electrochemical Performance of Solid Oxide Fuel Cell Anode[J]. Journal of Inorganic Materials, 2015, 30(12): 1291-1294.

图/表 6

图1 流延装置示意图

Fig. 1 Schematic of phase-inversion tape casting

图2 NiO-YSZ阳极支撑体生坯断面结构

Fig. 2 Cross section of green NiO-YSZ anode support

图3 还原后Ni-YSZ阳极支撑体的多孔结构形貌

Fig. 3 Porous structure images of reduced anode support. (a) Cross section; (b) Top view; (c) Bottom view

图4 电化学测试后单电池SEM照片

Fig. 4 SEM images of the anode-supported cell after electrochemical testing. (a) Cross section; (b) Enlarged cross section corresponding to the region marked by square in (a)

图5 单电池电输出性能(I-V和 I-P)曲线

Fig. 5 Output performance of cell (I-V and I-P curves)

图 6 开路状态下电池的极化阻抗谱

Fig. 6 Impedance spectra of cell under open circuit condition

参考文献 16

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固体氧化物燃料电池阳极的相转化流延制备和电化学性能研究

Phase Inversion Tape Casting and Electrochemical Performance of Solid Oxide Fuel Cell Anode

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