Mixed-potential-type YSZ-based sensor with nano-structured NiO and porous TPB processed with pore-formers using coating technique

Cheng, Xinjian; Wang, Chen; Wang, Biao; Sun, Ruize; Guan, Yingzhou; Sun, Yanfeng; Liang, Xishuang; Sun, Peng

doi:10.1016/j.snb.2015.07.104

Cited by 22 publications

(5 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When the reaction rate of the cathodic reaction is equal to the anodic reaction, the mixed potential is generated, as shown in Figure . TPB provides the reaction field for reactions (1) and (2); a higher roughness value means a larger interface between NiO and the YSZ substrate, which could provide more active sites for the electrochemical reactions. , As indicated in Figure , Ra increased from 38.2 to 119.3 and the response of S0–S5 to 100 ppm of NO 2 also increased from 53.7 to 102.2 mV. The sensors S4 and S5 generate almost the same NO 2 sensitivity with nearly the same roughness value.…”

Section: Resultsmentioning

confidence: 88%

Fabrication of Well-Ordered Three-Phase Boundary with Nanostructure Pore Array for Mixed Potential-Type Zirconia-Based NO₂ Sensor

Wang

Liu

Yang

et al. 2016

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

A well-ordered porous three-phase boundary (TPB) was prepared with a polystyrene sphere as template and examined to improve the sensitivity of yttria-stabilized zirconia (YSZ)-based mixed-potential-type NO2 sensor due to the increase of the electrochemical reaction active sites. The shape of pore array on the YSZ substrate surface can be controlled through changing the concentration of the precursor solution (Zr(4+)/Y(3+) = 23 mol/L/4 mol/L) and treatment conditions. An ordered hemispherical array was obtained when CZr(4+) = 0.2 mol/L. The processed YSZ substrates were used to fabricate the sensors, and different sensitivities caused by different morphologies were tested. The sensor with well-ordered porous TPB exhibited the highest sensitivity to NO2 with a response value of 105 mV to 100 ppm of NO2, which is approximately twice as much as the smooth one. In addition, the sensor also showed good stability and speedy response kinetics. All these enhanced sensing properties might be due to the structure and morphology of the enlarged TPB.

show abstract

Section: Resultsmentioning

confidence: 88%

Fabrication of Well-Ordered Three-Phase Boundary with Nanostructure Pore Array for Mixed Potential-Type Zirconia-Based NO₂ Sensor

Wang

Liu

Yang

et al. 2016

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

show abstract

“…7,40 Nevertheless, many NiO based sensing electrodes have demonstrated maximum sensitivity above 600 °C. [41][42][43][44][45] For example, a NiO SE based NO x sensor fabricated on an YSZ electrolyte with well-ordered pore array structure showed a maximum sensitivity of ∼85 mV for 50 ppm of NO 2 operating at 850 °C (Fig. 2a).…”

Section: Nox Sensormentioning

confidence: 99%

“…The role of electrode morphology along with particle size was studied by Cheng et al where nano-structured NiO was coated on porous YSZ resulting in improved sensitivity. 42 Due to restrictions on NO x emission levels, the interested detection range of NO x has also narrowed historically. For example, initial studies of NO x sensors in 1996 investigated a wide concentration range of 5-4000 ppm whereas studies after 2010 have been largely restricted to an upper limit of 700 ppm.…”

Section: Nox Sensormentioning

confidence: 99%

Editors’ Choice—Review—Recent Advances in Mixed Potential Sensors

Kannan

2020

J. Electrochem. Soc.

View full text Add to dashboard Cite

Gas sensors are widely used in environmental monitoring and provide controls especially when working with toxic gases. YSZ based λ-sensors have been utilized in the automobile industry for exhaust gas monitoring for more than 40 years. However, recent regulations on emissions reduction has forced further development of toxic gases monitoring in various applications. Mixed potential sensors with YSZ electrolyte are receiving increased attention due to their higher sensitivity and durability under harsh conditions. This review focuses on recent (past 5 years) developments made on electrode and electrolyte structure along with new sensing electrode materials towards detecting gases such as NOx, NH3, H2, CO and hydrocarbons (HCs). The theory of mixed potential sensors is discussed along with recent developments in detection of multi-gas mixtures using the output from an array of sensors in a mathematical model. Future directions for mixed potential sensor research, and methodologies to improving sensing characteristics are also outlined.

show abstract

“…Guan et al 60 reported that the femtosecond laser direct writing technology was used to process the YSZ surface, aiming at improving the sensing performance. In addition, sand blasting, 122 double-tape casting and the pore-forming, 123,124 coating, 125 and atmospheric plasma spraying technique 126 were used to increase roughness of YSZ surface and number of TPB active sites.…”

Section: Improvement Of Tpbmentioning

confidence: 99%

Review—Electrochemical NO_xGas Sensors Based on Stabilized Zirconia

Liu

Wang

et al. 2017

J. Electrochem. Soc.

View full text Add to dashboard Cite

Nitrogen oxides originated from combustion-exhausts are not only harmful to human health, but they also form acid rain and photochemical smog, both of which inflict enormous environmental damage. Therefore, monitoring and controlling NO x are an urgent requirement. Electrochemical sensors based on solid electrolyte are a promising method for detection of NO x . We review the working principles and the recent developments in the area of ZrO 2 -based electrochemical NO x sensors, including equilibrium potentiometric, mixed potential, pulsed polarization, amperometric, and impedancemetric NO x sensors. The improvement of triplephase boundary (TPB), the limiting factors in measurement, and the future perspectives are also discussed in this review.

show abstract

Mixed-potential-type YSZ-based sensor with nano-structured NiO and porous TPB processed with pore-formers using coating technique

Cited by 22 publications

References 39 publications

Fabrication of Well-Ordered Three-Phase Boundary with Nanostructure Pore Array for Mixed Potential-Type Zirconia-Based NO₂ Sensor

Fabrication of Well-Ordered Three-Phase Boundary with Nanostructure Pore Array for Mixed Potential-Type Zirconia-Based NO₂ Sensor

Editors’ Choice—Review—Recent Advances in Mixed Potential Sensors

Review—Electrochemical NO_xGas Sensors Based on Stabilized Zirconia

Contact Info

Product

Resources

About

Mixed-potential-type YSZ-based sensor with nano-structured NiO and porous TPB processed with pore-formers using coating technique

Cited by 22 publications

References 39 publications

Fabrication of Well-Ordered Three-Phase Boundary with Nanostructure Pore Array for Mixed Potential-Type Zirconia-Based NO2 Sensor

Fabrication of Well-Ordered Three-Phase Boundary with Nanostructure Pore Array for Mixed Potential-Type Zirconia-Based NO2 Sensor

Editors’ Choice—Review—Recent Advances in Mixed Potential Sensors

Review—Electrochemical NOxGas Sensors Based on Stabilized Zirconia

Contact Info

Product

Resources

About

Fabrication of Well-Ordered Three-Phase Boundary with Nanostructure Pore Array for Mixed Potential-Type Zirconia-Based NO₂ Sensor

Fabrication of Well-Ordered Three-Phase Boundary with Nanostructure Pore Array for Mixed Potential-Type Zirconia-Based NO₂ Sensor

Review—Electrochemical NO_xGas Sensors Based on Stabilized Zirconia