阳极支撑固体氧化物燃料电池的制备及性能  

Preparation and performance of anode-supported SOFC

作　　者：郭为民[1] 刘江[1] 

机构地区：[1]华南理工大学化学科学学院,广东广州510641

出　　处：《电源技术》2008年第3期180-183,共4页Chinese Journal of Power Sources

基　　金：广东省科技计划项目(2005B50101007)

摘　　要：利用离心法成膜工艺在多孔Ni-YSZ阳极基体上制备8%(摩尔分数)YSZ电解质层,在1400℃共烧结,得到致密的YSZ膜和多孔结构的阳极。用苷氨酸-硝酸盐燃烧法合成超细阳极与阴极材料。其中,NiO-YSZ复合粉体用于阳极,La0.6Sr0.4Co0.2Fe0.8O3(LSCF)和30%(质量分数)Ce0.9Gd0.1O1.95(GDC)复合材料用作阴极。以氢气为燃料,研究了500～800℃时Ni-YSZ阳极支撑体固体氧化物燃料电池(SOFC)单电池的性能。结果表明在500℃时电池开路电压(OCV)达1.10V,800℃时短路电流密度达1113mA/cm2,最大比功率为296mW/cm2。通过交流阻抗图谱分析,认为电解质欧姆电阻是影响电池性能的主要因素。A centrifugal casting technique was applied to deposit thin 8%YSZ electrolyte layers on porous NiO-YSZ anode substrates for single solid oxide fuel cells （SOFC）, After the bilayers were co-sintered at 1 400℃, dense pinhole-free YSZ coatings were obtained, while the anodes maintained porosity. The nano-size anode and cathode materials used in the SOFC were prepared by glycine-nitrate combustion method with using NiO-YSZ composite powder as anode, La0.6Sr0.4Co0.2Fe0.8O3（LSCF）（LSCF） with 30%Ce0.9Gd0.1O1.96（GDC） as cathode. The performance of the Ni-YSZ anode supported SOFC on hydrogen fuel was obtained from 500℃to 800℃. The highest open circuit voltage （OCV） was about 1.10 V at 500 ℃ and the maximum power density of 296 mW/cm^2 and a short circuit density of 1 113 mA/cm^2 of the cell were observed at 800℃ Impedance spectra were measured during cell tests showed that ohmic resistances was the predominant resistance.

关 键 词：固体氧化物燃料电池(SOFC) 离心法成膜 苷氨酸-硝酸盐燃烧法 Ni阳极支撑 

分 类 号：TM911.4[电气工程—电力电子与电力传动]