A self-regenerable soot sensor with a proton-conductive thin electrolyte and a nanostructured platinum sensing electrode.
A self-regenerable soot sensor with a proton-conductive thin electrolyte and a nanostructured platinum sensing electrode.
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DOI：
10.1038/srep37463
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发表时间：
2016-11-18
影响因子：
4.6
通讯作者：
Hibino T
中科院分区：
文献类型：
--
作者：
Lv P;Ito T;Oogushi A;Nakashima K;Nagao M;Hibino T
近年来，废气传感器在能源和环境技术中的应用越来越有吸引力。关于这些传感器的实际应用，特别是烟尘测量的重要问题包括离子导电电解质和活性电极催化剂的进一步发展，以满足性能和耐用性要求。在此，我们设计了一个具有高击穿电压的质子导体和一个对电化学碳氧化具有高灵敏度的传感电极，通过传感器的自再生实现了对烟灰的连续监测。在Si0.97Al0.03O2-δ衬底表面与液体H3PO4在600℃下反应，生长出质子电导率和耐压性能良好的Si0.97Al0.03HxP2O7-δ层。通过在Pt传感电极中加入Pt浸渍的Sn0.9In0.1HxP2O7-δ催化剂，实现了电化学生成的活性氧对煤烟的特异反应性。为了充分利用这些优化的材料，通过在电解质层的同一表面上配置传感电极和反电极，制备了单极电化学装置。由此产生的安培模式传感器成功地产生了与烟灰数量相对应的电流信号。
In recent years, exhaust sensors have become increasingly attractive for use in energy and environmental technologies. Important issues regarding practical applications of these sensors, especially for soot measurements, include the further development of ion-conductive electrolytes and active electrode catalysts for meeting performance and durability requirements. Herein, we design a proton conductor with a high breakdown voltage and a sensing electrode with high sensitivity to electrochemical carbon oxidation, enabling continuous soot monitoring with self-regeneration of the sensor. A Si0.97Al0.03HxP2O7-δ layer with an excellent balance between proton conductivity and voltage endurance was grown on the surface of a Si0.97Al0.03O2-δ substrate by reacting it with liquid H3PO4 at 600 °C. Specific reactivity of the electrochemically formed active oxygen toward soot was accomplished by adding a Pt-impregnated Sn0.9In0.1HxP2O7-δ catalyst into a Pt sensing electrode. To make the best use of these optimized materials, a unipolar electrochemical device was fabricated by configuring the sensing and counter electrodes on the same surface of the electrolyte layer. The resulting amperometric mode sensor successfully produced a current signal that corresponded to the quantity of soot.
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影响因子：
3.1
作者：
Litton, CD
通讯作者：
Litton, CD
影响因子：
8.4
作者：
Shen, Y. B.;Harada, T.;Hibino, T.
通讯作者：
Hibino, T.
影响因子：
8.4
作者：
Shen, Y. B.;Takeuchi, T.;Hibino, T.
通讯作者：
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影响因子：
22.1
作者：
Dong, Xue;Tsuneyama, Kota;Hibino, Takashi
通讯作者：
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影响因子：
3.9
作者：
Hagen, Gunter;Feistkorn, Constanze;Moos, Ralf
通讯作者：
Moos, Ralf