Solid Electrolyte CO2 Sensor Using NASICON and Li-based Binary Carbonate Electrode

Yao, Sheng; Hosohara, Sachio; Shimizu, Youichi; Miura, Norio; Futata, Hozumi; Yamazoe, Noboru

doi:10.1246/cl.1991.2069

Cited by 75 publications

(28 citation statements)

References 3 publications

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“…This is because at x = 2, the relative partial molar enthalpy of Na 2 O is minimum and the relative partial molar entropy of Na 2 O on the other hand is maximum, hence Na + ions are more mobile in this composition 5 . Because of this, NASICON finds extensive use in devices such as separation membranes, fuel cells and gas sensors [6][7][8][9][10] .…”

Section: Introductionmentioning

confidence: 99%

New insight into the electrical properties and ion dynamics of screen printed NASICON thick films

Mudenda

Kale

2015

J. Mater. Chem. A

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Although AC conductivity measurements of NASICON is well documented in literature, thick film conductivity and ion dynamic studies, important for planar, are scarcely reported. Most thick film measurements are performed using four point probe methods (DC method) and are quite limited in that, they cant give information on ion dynamics and cannot seperate contributions from grains, grain boundaries and electrode effects. However, in this paper we report the electrical properties of NASICON, x = 1.95 thick films of different thicknesses (20-32 µm), screen printed on alumina substrates, in light of ionic dynamics using the AC conductivity formalism. Surface resistivities of thick films from impedance data in the frequency range 0.1 ≤ f (HZ) ≤ 3.2 × 10 7 is obtained. Impedance Cole-Cole plots shows grain interior and electrode effects. The hopping frequency and AC/DC conductivity are thermally activated and show Arrhenius-type behaviour, with activation energies in the range of 0.44 ≤ E a (eV ) ≤ 0.46. Scaling in conductivity and Modulus shows that the relaxation mechanisms are independent of temperature and film thickness. Conductivity was independent of film thickness at high temperatures. SEM reveals that there is a minimum thickness for which NASICON on alumina substrate can be printed and used in high temperature planar electrochemical devices.

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Section: Introductionmentioning

confidence: 99%

New insight into the electrical properties and ion dynamics of screen printed NASICON thick films

Mudenda

Kale

2015

J. Mater. Chem. A

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“…A simple and cheap method of CO 2 detection is thus needed. Potential methods for CO 2 detection are gas sensors based on measuring potentiometric [1][2][3][4][5][6][7][8][9][10][11][12] or amperometric [13] responses, or measuring capacitance [14,15] or resistance change [16].…”

Section: Introductionmentioning

confidence: 99%

Study on the Characteristics of Ag Doped CuO-BaTiO3 CO2 Sensors

Jiao

Chen

et al. 2002

Sensors

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Abstract:In this paper the characteristics of a CuO-BaTiO 3 based CO 2 gas sensor was investigated. The sensitivity of the CuO-BaTiO 3 based CO 2 sensor was influenced by doping various metal elements such as Au, Ag, Pt, Pd, Ce, Mg, Sr, La, Zn, Fe and Bi, which were added as a pure metal or in the form of metal oxides. It was found that Ag is the most suitable additive among all substances tested. The Ag-doped CO 2 gas sensor has better sensitivity and lower operating temperature, with a detection concentration range of from 100 ppm to 10%. The sensor also shows good stability.

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“…As the importance of controlling CO sensor is required from the point of simplicity, low price and quantitative characteristic [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Bi-electrolyte Carbon Dioxide Gas Sensor Based on Paste Sodium-Beta Alumina and Yttria-stabilized Zirconia

Han¹,

Park²

2014

Journal of Sensor Science and Technology

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CO 2 sensor was used only one solid electrolyte in many cases. To improve the sensing characteristics of CO 2 sensors, solid electrolyte CO 2 sensor has been developed by bi-electrolyte type sensor using Na-Beta-alumina and YSZ. However, in many further studies, bielectrolyte type sensor was made by pellet pressed by press machine and additional treatment for formation of interface. In the aspect of mass production, using thick film and additional treatment is not suitable. In this study, CO 2 sensor was fabricated by bi-electrolyte structure which was made by an NBA paste layer deposited on YSZ pellet and fired at 1650 o C for 2 hour. The formation of stable interface between YSZ and NBA were confirmed by SEM image. When the type IV electrochemical cell arrangement represented by CO 2 ,O 2 ,Pt| Li 2 CO 3 -CaCO 3 ||NBA||YSZ|O 2 ,Pt is used to measure the CO 2 concentration in air. This sensor EMF should depend only on the concentration of CO 2 by logarithmic. Also, sensor shows P CO 2 and EMF relationship like nerstian reaction at a temperature of 450 o C.

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Solid Electrolyte CO2 Sensor Using NASICON and Li-based Binary Carbonate Electrode

Cited by 75 publications

References 3 publications

New insight into the electrical properties and ion dynamics of screen printed NASICON thick films

New insight into the electrical properties and ion dynamics of screen printed NASICON thick films

Study on the Characteristics of Ag Doped CuO-BaTiO3 CO2 Sensors

Bi-electrolyte Carbon Dioxide Gas Sensor Based on Paste Sodium-Beta Alumina and Yttria-stabilized Zirconia

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