La2NiO4+δ透氧膜材料的结构特点与性能

无机材料学报, 2001, 16(3): 440-446. doi: 10.3321/j.issn:1000-324X.2001.03.009

La2NiO4+δ透氧膜材料的结构特点与性能

张华 ^1, , 金江 ^2, , 余桂郁 ^3, , 杨南如 ^4, , 施剑林 ^5, , 冯景伟 ^6,

1.南京化工大学材料学院,

2.南京化工大学材料学院,

3.南京化工大学材料学院,

4.南京化工大学材料学院,

5.中国科学院上海硅酸盐研究所,

6.中国科学院上海硅酸盐研究所,

关键词： La2NiO4+δ , 透氧膜 , 晶体结构 , 混合导电性 , 氧渗透性能

Structure and Properties of La2NiO4+δ Oxygen Permeation Membranes

论了La2NiO4+δ透氧膜材料的结构特点及氧渗透性能。对La2NiO4+δ试样电子衍射谱的分析表明，其结构中由于填隙氧离子的存在及其有序化，出现了超结构现象，并根据此结构对衍射谱进行了指标化，同时探讨了结构特点与透氧机制之间的关系。

The structure and the permeability of La2NiO4+δ oxygen permeating membranes were discussed. TEM studies of La2NiO4+δ show that La2NiO4+δ contains a large amount of interstitial oxygen and exhibits a superstructure behavior owing to long range ordering of interstitial oxygen. The oxygen permeation flux through La2NiO4+δ was determined and the relationship between mechanism of oxygen permeability and structure was discussed. The results indicate that the oxygen transportation by interstitial mechanism is easier than that by vacancy mechanism.

参考文献

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[3]	Hassel B A van, Kawada T, Sakai N, et al. Solid State Ionics, 1993, 66: 295-305.
[4]	张华,李祖钢,余桂郁,等.膜科学与技术.1999,19(6):34-37.
[5]	Demourgeues A, Weill F, Grenier J C, et al. Physica C, 1992, 192: 425-434.

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