Planar-type BiCuVOx solid electrolyte sensor for the detection of volatile organic compounds
Planar-type BiCuVOx solid electrolyte sensor for the detection of volatile organic compounds
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DOI：
10.1016/j.snb.2008.12.014
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发表时间：
2009-03
影响因子：
8.4
通讯作者：
T. Kida;Takuya Minami;S. Kishi;M. Yuasa;K. Shimanoe;N. Yamazoe
中科院分区：
文献类型：
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作者：
T. Kida;Takuya Minami;S. Kishi;M. Yuasa;K. Shimanoe;N. Yamazoe
混合电位型气体传感器与BiCuVOx（Bi2Cu0.1V0.9O5.35）的氧导体，配有复合电极制成的钙钛矿型氧化物（La0.6Sr0.4Co0.8Fe0.2O3）和BiCuVOx，测试其有机气体传感性能。在400°C下，薄的敏感电极和厚的对电极组成的平面型BiCuVOx基器件对低浓度乙醇（4- 30 ppm）表现出良好的敏感特性。该装置的电动势与乙醇浓度的对数呈线性关系。该设备的90%响应和恢复时间很短，即，少于1分钟。此外，平面结构成功地消除了任何氧干扰。乙醇传感机制是基于从同时阳极氧化的乙醇和阴极还原的氧，在BiCuVOx/电极界面的混合电位产生。
Mixed potential-type gas sensors with a BiCuVOx(Bi2Cu0.1V0.9O5.35) oxygen conductor, fitted with composite electrodes made of perovskite-type oxide (La0.6Sr0.4Co0.8Fe0.2O3) and BiCuVOx, were tested for their organic gas sensing properties. A planar-type BiCuVOx-based device, in which thin sensing electrode and thick counter electrode are attached, exhibited good sensing characteristics to low ethanol concentrations (4–30ppm) at 400°C. The electromotive force (EMF) of the device had a linear relation to the logarithm of ethanol concentration. The 90% response and recovery times of the device were short, i.e., less than 1min. Moreover, the planar structure successfully eliminated any oxygen interference. The ethanol sensing mechanism is based on the mixed potential generation from the simultaneous anodic oxidation of ethanol and the cathodic reduction of oxygen, at the BiCuVOx/electrode interface.