Investigation of electrical, structural and thermal stability properties of (Bi_2O_3)_1-x-y(Dy_2O_3)x(Ho_2O_3)y ternary system

28130

The aim of this study is to find an electrolyte which does not have any degradation in its properties with time this maybe caused either interaction between the different electrochemical cell materials or by instability of the ionic conductor under operation conditions. Accordingly, this (Bi_2O_3)_1-x-y (Ho_2O_3)x(Dy-2O-3)y ternary system (x=11, 12, 13, 14 mol % and y=4, 3, 2, 1 mol %, dopant concentrations) sample materials were synthesized using solid state reaction method sintering each of them at 750°C for 48 hours. Structural, electrical and thermal properties of the samples which are candidate of electrolyte for solid oxide fuel cells have been evaluated by means of X-ray diffraction (XRD), four-probe method, and thermal analysis (TG / DTA). XRD measurements showed that all of the samples have stable δ- type phase which was also supported by the TG / DTA measurements.

6

Electrolyte , Solid state reaction , Fuel cell , Electrical conductivity , Four , probe point method

Erciyes University Journal Of The Institute Of Science an‎d Technology

10

Erciyes University Journal Of The Institute Of Science an‎d Technology