Linyucheva O. Electrochemical high-resolution sensors based on matrix electrolytes for monitoring the ambient air

Українська версія

Thesis for the degree of Doctor of Science (DSc)

State registration number

0509U000550

Thesis Registration Form

0509U000550.pdf

Applicant for

Specialization

  • 05.17.03 - Технічна електрохімія

07-10-2009

Specialized Academic Board

Д 26.002.13

Publishing and Printing Institute of Igor Sikorsky Kyiv Polytechnic Institute

Essay

The dissertation is devoted to developing theoretical principles for the production of gas-diffusion electrodes (GDE) with composite electrocatalysts for sensor technologies, on the basis of which a series of solid electrochemical gas sensors and devices was developed for monitoring the air. Porous titanium has been proved to be a current-conducting basis of the GDE, and its high selectivity to halogen-halogenide reactions has been determined, which allowed the resolution of NTUU "KPI" sensors to be increased by the order of magnitude. A mathematical model has been developed for the mass transfer in the gas phase of the GDE. High-sensitivity solid amperometric-type sensors (NH3, HCL, HF, HBr, O3, NOx, CO2) have been practically realized, these new-generation high-resolution sensors being unified by their structure, geometrical dimensions as well as by the electrode materials and electrolytes. An integral sensor module (sensor and generator) has been developed. The module is a solid three-dimension cell and has the dimensions and construction elements characteristic of high-sensitivity sensors based on matrix electrolytes. The mathematical model proposed enabled a scaling (a decrease by 1.5 times) of the unified series of gas sensors to be conducted. The developed unified series of new-generation electrochemical gas-sensors, which, by their technical characteristics, are higher than the world standard, allowed the production of gas analysers for monitoring the air to be organized in Ukraine, Russia and France. Due to this development it has become unnecessary to import gas analysers to Ukraine.

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Files

aref.doc

diss.doc

diss.doc

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