Behavior of oxygen concentration cells using BiCuVOx oxide-ion conductor
Behavior of oxygen concentration cells using BiCuVOx oxide-ion conductor
复制标题
使用 BiCuVOx 氧化物离子导体的氧浓差电池的行为
DOI：
10.1016/j.snb.2004.10.043
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发表时间：
2005
影响因子：
8.4
通讯作者：
N. Yamazoe
中科院分区：
文献类型：
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作者：
Hansang Cho;G. Sakai;K. Shimanoe;N. Yamazoe
混合氧化物Bi2Cu0.1V0.9O5.35通常缩写为BiCuVOx，被称为氧化物离子导体。这种氧化物的电位型氧传感器的适用性进行了研究。通过使用这种氧化物的圆盘来制造氧浓差电池，以测试在300 ° C和700°C之间的各种温度下对10%和100%之间的氧浓度变化的EMF响应。结果发现，电池的性能在很大程度上取决于电极材料的种类。当与Pt电极连接时，电池仅在600°C及以上产生相当好的EMF响应，而根据氧泵送电流的法拉第效率评估，即使在500°C，氧化物离子传输数也接近1。发现使用钙钛矿型氧化物（La0.6Sr0.4Co0.8Fe0.2O3）代替Pt使得电池能够在400°C及以上工作。当氧化物与BiCuVOx粉末混合后作为电极施加到BiCuVOx盘上时，观察到特别优异的性能。
The mixed oxide, Bi2Cu0.1V0.9O5.35often abbreviated as BiCuVOx, is known as an oxide-ionic conductor. The applicability of this oxide to a potentiometric oxygen sensor was investigated. Oxygen concentration cells were fabricated by using a disk of this oxide to test the EMF response to changes in oxygen concentration between 10% and 100% at various temperatures between 300 and 700°C. As a result, the performances of the cells were found to depend very much on the kinds of electrode materials. When attached with Pt electrodes, the cell produced the EMF response fairly good only at 600°C and above, whereas the oxide-ion transport number was close to unity even at 500°C as evaluated from the Faraday efficiency of oxygen pumping current. The use of a perovskite-type oxide (La0.6Sr0.4Co0.8Fe0.2O3) instead of Pt was found to enable the cell to work at 400°C and above. Especially excellent performances were observed when the oxide was mixed with BiCuVOxpowder prior to being applied on the BiCuVOxdisk as the electrodes.