Effect of electrode interface structure on the characteristics of a thin-film limiting current type oxygen sensor

2005 ◽  
Vol 108 (1-2) ◽  
pp. 326-330 ◽  
Author(s):  
Takayuki Suzuki ◽  
Masato Kondo ◽  
Kaoru Ogino ◽  
Yoshiaki Ishiguro ◽  
Hideaki Takahashi
Keyword(s):  
Thin Film ◽  
Oxygen Sensor ◽  
Interface Structure ◽  
Limiting Current ◽  
Electrode Interface

Predicting the interface structure of Nb thin film grown on MgO(110) substrate

2016 ◽  
Vol 183 ◽  
pp. 338-340 ◽  
Author(s):  
Y. Fang ◽  
L.Y. Zhang ◽  
H.L. Zhang
Keyword(s):  
Thin Film ◽  
Interface Structure

Fabrication of Solid Oxide Fuel Cells via Thin Film Techniques

2010 ◽  
Vol 654-656 ◽  
pp. 2787-2790 ◽  
Author(s):  
Yoon Ho Lee ◽  
Goo Young Cho ◽  
Young Seok Jee ◽  
Ikwhang Chang ◽  
Sang Kyun Kang ◽  
...  
Keyword(s):  
Thin Film ◽  
Film Deposition ◽  
Solid Oxide ◽  
Limiting Current ◽  
Membrane Electrode ◽  
Barium Zirconate ◽  
Oxide Fuel ◽  
Operation Temperature ◽  
Thin Film Electrolyte ◽  
Film Electrolyte

Fabricating electrolyte with thin film is one of various methods of lowering the operation temperature for solid oxide fuel cell (SOFC). Because the major polarization of SOFCs is ohmic loss, many groups have tried to fabricate a thin film electrolyte – some proton conducting material that has the conductivity of a couple of orders higher than oxygen conducting one. We have investigated the synthesis of Membrane Electrode Assembly (MEA) including Yttria-doped Barium Zirconate(BYZ) thin film electrolyte via thin-film processes such as Pulsed Laser Deposition and Sputtering. Another approach to lower the operation temperature of SOFCs is the bi-layer structure electrolyte. The functional layer via thin film deposition could guarantee minimum power density loss and stable operation. After the study of Atomic Layer Deposition (ALD) condition to deposit Yttria Stabilized Zirconia (YSZ) on Gadonilia doped Cerate (GDC) substrate, GDC/YSZ bi-layered electrolyte button cells showed higher OCV and larger limiting current with 100nm YSZ ultra thin film. The performance improvement might be attributed to the function of electron blocking and cutting off the reducible gas.

Thin film anodized titania nanotubes-based oxygen sensor

2014 ◽  
Author(s):  
Alison E. Viegas ◽  
Debaditya Chatterjee ◽  
Tanushree H. Choudhury ◽  
Srinivasan Raghavan ◽  
Navakanta Bhat
Keyword(s):  
Thin Film ◽  
Oxygen Sensor ◽  
Titania Nanotubes

Design and Fabrication of Micro Oxygen Sensor

2011 ◽  
Vol 483 ◽  
pp. 237-242
Author(s):  
Chia Yen Lee ◽  
Long Kai Lin Liou ◽  
Chin Lung Chang ◽  
Chang Hsing Tai ◽  
Lung Ming Fu
Keyword(s):  
Thin Film ◽  
Electrical Conductivity ◽  
Gas Sensor ◽  
Oxygen Sensor ◽  
Rf Sputtering ◽  
Experimental Results ◽  
Surface Pattern ◽  
Working Temperature ◽  
Measured Resistance ◽  
Sensing Performance

In the study, a MEMS-based gas sensor is presented, which consists of a sensing thin film deposited by RF sputtering and annealed at 375°C. The structure and surface pattern of the thin film are analyzed by XRD and SEM. The sensor consists of a substrate, Pt interdigitated electrodes and an SnO2 sensing layer. As concentration of oxygen changes, a change in the electrical conductivity of the SnO2 film is caused. The experimental results show that the measured resistance increases as the concentration of oxygen increases at a working temperature of 300°C. A good oxygen sensing performance is presented in the study.

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