Solid‐State  CO 2 Sensor with Li2 CO 3 ‐ Li3 PO 4 ‐ LiAlO2 Electrolyte and LiCoO2 ‐ Co3 O 4 as Solid Reference Electrode

Abstract

cess. The calculated results generally agree fairly well with the experimental results of A[O]i and oxide precipitate density for various kinds of thermal processes with no parameter fitting. Consequently, this computer simulation technique becomes an advantageous tool for industrial optimization of the oxygen precipitation characteristics for an arbitrary device fabrication thermal process.

A Simple and Fast Electrochemical CO2 Sensor Based on Li7La3Zr2O12 for Environmental Monitoring

“…Once adsorbed at the TPB, carbon dioxide molecules react with K + ions from the electrolyte, forming immobile K 2 CO 3 , establishing new chemical potential on the sensing electrode and resulting in a changed EMF of the cell. Also, type II gas sensors can be used for NO x and SO x detection, however, the number of chemically stable combinations for solid electrolyte and sensing electrode materials are limited toward other gasses, being the major drawback of this sensor principle . Type I and type II sensors are usually two‐chamber systems, where the chemical potential of the RE is fixed by a physical separation from the measurement chamber filled with detected specimen.…”

Industrial Hygiene Chemistry: Keeping Pace with Rapid Change in the Workplace

“…Excellent results were obtained in dry air, but significantly lower responses were obtained in humid environments. In other research by Zhang et al (D5,D6), a solid-state electrochemical sensor for carbon dioxide was fabricated using a lithium ion conductor. The device was found to perform well for the detection of CO 2 at high temperature, and the response was not affected by water vapor.…”

Comment on “Potentiometric solid state CO2 sensor and the role of electronic conductivity of the electrolyte” by H. Näfe

“…More importantly, they found that the solid solution can be formed either in the Li 3 PO 4 system or Li 4 SiO 4 system depending on the composition. Even though Di Pietro and Scrosati [3] 4 and SiO 2 after sintering. It means our system is expected to behave more like pure Li 3 PO 4 .…”

“…Lithium phosphate has been studied in low temperature battery applications in the glass form such as LIPON. But, in many cases, it has usually been used as a sintering agent in other ionic conduction systems such as Li 4 SiO 4 [2,3] and Li 2 CO 3 [4] rather than an independent ionic conductor. However, there is no literature reporting whether the conductivity of Li 3 PO 4 is purely ionic or mixed ionic and electronic at especially high temperatures above 500 • C. Considering available literature regarding electronic conduction using the EMF measurement and our experimental results, we concluded that n-type conduction of Li 3 PO 4 affects the measured EMF of our CO 2 sensor.…”