Selectivity of HC-sensitive electrode materials for mixed potential gas sensors

Zösel, J.; Ahlborn, K.; Müller, Ralf; Westphal, Douglas L.; Vashook, V.; Guth, U.

doi:10.1016/s0167-2738(03)00082-1

Cited by 67 publications

(40 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The HC sensitivity has been confirmed to be controlled not only by electrochemical activity but also by a gas-phase catalytic activity of SE [9,109]. Zosel et al reported that the HC sensitivity of YSZ-based sensors using (Au + oxide)-SEs correlated well with the gas-phase activity of the SE material [14,108]. Since an SE material usually possesses high catalytic activity for oxidation (or decomposition) of HCs within a SE layer of the sensor, the actual concentration of HCs at the SE/YSZ interface will be decreased, resulting in a reduction of HC sensitivity.…”

Section: Co Sensormentioning

confidence: 96%

“…Another excellent stability was also reported by Mochizuki et al in the sensor, Pt-Al 2 O 3 |YSZ|Pt, which was capable of showing the stable CO response for nearly 4,000 h (about 167 days) of operation [104]. LSM strontium-doped lanthanum manganite a Separated configuration means SE and RE are located in separated chamber and exposed to different atmosphere, where SE in sensing chamber will be exposed to testing gas and RE in reference chamber will be exposed to reference gas the enhancement of HC sensitivity [14,16,51,[105][106][107][108]. In some of these publications, Hibino et al disclosed that the addition of metal oxide to Au-or Pt-SE increased the electrochemical catalytic activity to HCs at the SE/YSZ interface [51,105].…”

Section: Co Sensormentioning

confidence: 99%

See 1 more Smart Citation

A review of mixed-potential type zirconia-based gas sensors

Miura

Sato

Anggraini

et al. 2014

Ionics

295

175

View full text Add to dashboard Cite

A robust and reliable gas sensing device is considered as a convenient and practical solution for gas concentration monitoring that has become a mandatory requirement in different field of applications. For in situ hazardous gases detection, a mixed-potential type gas sensor has been regarded as a promising solid-state gas sensor. For the past three decades, there has been a significant progress in achieving high performance in mixed-potential type sensors. Therefore, this review is focused on reporting the development of mixedpotential type gas sensors with combined yttria-stabilized zirconia (YSZ) as the base solid electrolyte material and various classes of electrode materials for their potential utilization as a high-performance sensing electrode. The underlying sensing mechanism of a mixed-potential type YSZ-based sensor is elaborated here in detail. Transformation in design and configuration of this type of sensor is also covered in this report. In addition, recent progresses on mixed-potential type gas sensors development for detection of several target gases, such as carbon monoxide, hydrocarbons, nitrogen oxides, hydrogen, and ammonia, are reviewed. Strategies to improve the sensing characteristic, particularly gas sensitivity and selectivity, are also reported. Based on the understanding of the fundamental sensing mechanism and the requirements for high-performance gas sensors, challenges and future trends for this type of gas sensor development are discussed.

show abstract

Section: Co Sensormentioning

confidence: 96%

Section: Co Sensormentioning

confidence: 99%

A review of mixed-potential type zirconia-based gas sensors

Miura

Sato

Anggraini

et al. 2014

Ionics

295

175

View full text Add to dashboard Cite

show abstract

“…It has been reported previously that polycrystalline thin films of Ga 2 O 3 are quite effective as a base material for high temperature sensing of oxygen 23 , reducing gases 23,24 , as well as for hydrocarbons 25 . The important feature of this material is the high temperature stability and thermal stability (melting T is near 1900°C).…”

Section: Defect-related Properties Of Ga 2 O 3 Nano-ribbons As a Funcmentioning

confidence: 99%

“…6 Bulk monoclinic gallium oxide (β-Ga 2 O 3 ) is a wide band gap semiconductor (E g = 4.9 eV), which exhibits conduction and luminescence properties 7,8 , with applications to opto-electronics and high temperature gas sensing. [9][10][11][12][13] Recently, several groups have reported the growth of β-Ga 2 O 3 nanowires by various techniques [14][15][16][17] , using the vapor liquid solid (VLS) mechanism, with either Au, Ni or oxygen as a catalyst. Since this material (in bulk or thin film) shows promise for high temperature gas sensing, it is important to examine the possible sensor-related properties of Ga 2 O 3 nanowires, which have a very large surface to volume ratio and thus may result in higher sensitivity devices.…”

Section: Introductionmentioning

confidence: 99%

Growth and characterization of single crystal Ga 2 O 3 nanowires and nano-ribbons for sensing applications

2005

View full text Add to dashboard Cite

The growth of monoclinic Ga 2 O 3 nanowires, nano-ribbons and nano-sheets has been investigated. Results indicate that high quality single crystal nanowires can be grown at 900°C using an Au catalyst, while single crystal nano-ribbons and nano-sheets require no metal catalyst for growth. Since bulk Ga 2 O 3 is a promising material for high temperature sensing, Ga 2 O 3 nanowires and nano-ribbons may prove to enhance the sensing capability due to the high surface area. We have investigated the nature of defects in this material using Electron Spin Resonance, in as grown material, as well as under annealing in a reducing gas (H 2 ) at various high temperatures. Results indicate the presence of an oxygen deficiency in the material, resulting in a conduction electron signal that becomes enhanced with annealing. An alternate use of these nanowires for sensing applications will also be presented, involving Surface Enhanced Raman Spectroscopy.

show abstract

“…In mixed-potential applications, complex alloys, metal-oxide cermets, etc., are of interest (Moos et al, 2009;Miura et al, 2014;Zosel et al, 2004;Zhuiykov and Miura, 2007). Such materials may be long-term stable in exhaust atmospheres.…”

Section: Introductionmentioning

confidence: 99%

Platform to develop exhaust gas sensors manufactured by glass-solder-supported joining of sintered yttria-stabilized zirconia

Schubert

Wollenhaupt

Kita

et al. 2016

J. Sens. Sens. Syst.

View full text Add to dashboard Cite

Abstract.A manufacturing process for a planar binary lambda sensor is shown. By joining the heating and the sensing components via glass soldering with a joining temperature of 850 • C, a laboratory platform has been established that allows the manufacturing of two independent parts in high-temperature co-fired ceramics technology (HTCC) with electrodes that are post-processed at lower temperatures, as is required for mixedpotential sensors. The final device is compared to a commercial sensor with respect to its sensing performance. Important processes and possible origins of problems as well as their solutions during sensor development are shown, including heater design and joining process.

show abstract

Selectivity of HC-sensitive electrode materials for mixed potential gas sensors

Cited by 67 publications

References 11 publications

A review of mixed-potential type zirconia-based gas sensors

A review of mixed-potential type zirconia-based gas sensors

Growth and characterization of single crystal Ga 2 O 3 nanowires and nano-ribbons for sensing applications

Platform to develop exhaust gas sensors manufactured by glass-solder-supported joining of sintered yttria-stabilized zirconia

Contact Info

Product

Resources

About