YSZ/Ni-YSZ双层中空纤维电解质层厚度控制及其影响

doi:10.3724/SP.J.1077.2013.12755

无机材料学报 ›› 2013, Vol. 28 ›› Issue (10): 1108-1114.DOI: 10.3724/SP.J.1077.2013.12755 CSTR: 32189.14.SP.J.1077.2013.12755

YSZ/Ni-YSZ双层中空纤维电解质层厚度控制及其影响

宫勋¹, 孟秀霞^1,2, 杨乃涛¹, 谭小耀^1,3, 尹屹梅², 马紫峰²

(1. 山东理工大学化工学院, 淄博 255049; 2. 上海交通大学化学工程系, 上海200240; 3. 天津工业大学化学工程系, 天津300160)

收稿日期:2012-12-14 修回日期:2013-01-22 出版日期:2013-10-20 网络出版日期:2013-09-18
作者简介:宫勋(1987-), 男, 硕士研究生. E-mail:ash1025@126.com
基金资助:
国家自然科学基金(21176187, 21076118, 21173147); 山东省优秀中青年科学家科研奖励基金(2010BSB01011)

Electrolyte Thickness Control and Its Effect on YSZ/Ni-YSZ Dual-layer Hollow Fibres

GONG Xun¹, MENG Xiu-Xia^{1, 2}, YANG Nai-Tao¹, TAN Xiao-Yao^1,3, YIN Yi-Mei², MA Zi-Feng²

(1 School of Chemical Engineering, Shandong University of Technology, Zibo 255049, China; 2 Institute of Electrochemical & Energy Technology, Shanghai Jiao Tong University, Shanghai 200240, China; 3 Department of Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160, China)

Received:2012-12-14 Revised:2013-01-22 Published:2013-10-20 Online:2013-09-18
About author:GONG Xun. E-mail:ash1025@126.com
Supported by:
National Natural Science Foundation of China (21176187, 21076118, 21173147); Promotive Research Fund for Excellent Young and Middle-aged Scientists of Shandong Province (2010BSB01011)

摘要/Abstract

摘要： 本研究利用相转化共纺丝法一步制备出微管式固体氧化物燃料电池(MT-SOFC)用电解质/阳极(YSZ/NiO-YSZ)双层中空纤维膜, 将制得的YSZ/NiO-YSZ双层中空纤维膜前驱体经1450℃烧结后, 以纯H₂在700℃下还原4 h得到YSZ/Ni-YSZ双层中空纤维膜。电解质YSZ膜层厚度通过改变YSZ铸膜液挤出速率来调节。将La_0.8Sr_0.2MnO_3-δ(LSM)阴极乳浆浸渍涂覆在烧结后的YSZ/NiO-YSZ双层中空纤维膜外, 经1200℃烧结后形成微管式固体氧化物燃料电池。结果表明, 当阳极铸膜液以10?mL/min速率挤出, 而电解质铸膜液挤出速率为0.5、1、1.5、2 mL/min时, 构造的YSZ/Ni-YSZ双层中空纤维膜电解质层厚度分别为6、13、18、28 μm, 其机械强度、气密性均随着电解质层厚度增加而增大, 但电导率与孔隙率受电解质层厚度的影响较小。YSZ膜厚度为28 μm的MT-SOFC, 800℃时以20 mL/min氢气作为燃料, 30 mL/min空气作为氧化剂, 最大开路电压为1.01 V, 最大输出功率只有75 mW/cm²。但同样测试条件下, YSZ膜厚度为6 μm的MT-SOFC, 开路电压为0.92 V, 最大输出功率升至329 mW/cm²。

关键词: 双层中空纤维, YSZ电解质膜, 相转化法, 微管式固体氧化物燃料电池, 共纺丝-共烧结

Abstract: Electrolyte/anode (YSZ/NiO-YSZ) dual-layer hollow fibres were developed by a co-spinning process based on phase inversion technique for fabrication of micro tubular solid oxide fuel cells (MT-SOFCs). After being calcined at 1450℃ in ambient air and reduced at 700℃ in H2 for 4 h, the precursors were transformed into dual layer YSZ/Ni-YSZ hollow fibers. Full MT-SOFCs were fabricated by dip-coating with La_0.8Sr_0.2MnO_3-δ (LSM) ink on the outer surface of YSZ/NiO-YSZ dual layer hollow fibers and sintering at 1200℃. The results show that the YSZ membranes of the dual-layer hollow fibers possess thicknesses of 6, 13, 18 and 28 μm when the spinning rates of electrolyte dopes are 0.5, 1, 1.5 and 2 mL/min and the anode dope keeps on a constant rate of 10 mL/min. The bending strength and the gas-tightness of the dual-layer hollow fibers increase with the increase of electrolyte thickness. However, the electrical conductivity and porosity of the dual-layer hollow fibers are less influenced by YSZ thickness. The maximum power density of single MT-SOFC with an electrolyte layer of 28 μm is 75 mW/cm², while the output of an MT-SOFC with a 6 μm-thick YSZ membrane is up to 329 mW/cm², both operated at 800?℃ using 20 mL/min H₂ as fuel and 30 mL/min air as oxidant.

Key words: dual-layer hollow fibre (DL-HF), YSZ electrolyte membrane, phase-inversion method, micro tubular solid oxide fuel cells (MT-SOFCs), co-spinning-sintering

中图分类号:

TQ174

宫勋, 孟秀霞, 杨乃涛, 谭小耀, 尹屹梅, 马紫峰. YSZ/Ni-YSZ双层中空纤维电解质层厚度控制及其影响[J]. 无机材料学报, 2013, 28(10): 1108-1114.

GONG Xun, MENG Xiu-Xia, YANG Nai-Tao, TAN Xiao-Yao, YIN Yi-Mei, MA Zi-Feng. Electrolyte Thickness Control and Its Effect on YSZ/Ni-YSZ Dual-layer Hollow Fibres[J]. Journal of Inorganic Materials, 2013, 28(10): 1108-1114.

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YSZ/Ni-YSZ双层中空纤维电解质层厚度控制及其影响

Electrolyte Thickness Control and Its Effect on YSZ/Ni-YSZ Dual-layer Hollow Fibres

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