Ceramici. Materiali utili per lo sviluppo di sensori elettrochimici a stato solido

A worldwide interest towards sensors capable to detect magnetic, radiant, thermal, mechanical and chemical signals is steadily increasing. Among these gauges, solid state electrochemical cells based on the use of ceramic electrolytes have been and will be largely employed for their high selectivity as well as high accuracy; reversibility and short response time in detecting chemical species. Being the measurable signal an electromotive force, further advantages using such devices derive by the easy processing of the signal by electronic circuits and by the possibility, in principle, to miniaturize the sensor being the e.m.f. of a galvanic cell indipendent of its size and geometry. Aim of the work is to review the solid state electrochemical sensors, used to determine the concentration of chemical species in gas phase