Optimizing the Manufacturing Method of Half-Cell Fuel Cell Based on Solid Electrolyte with Hydrogen Ion Conductivity

Abstract

Barium cerate-based perovskite oxides are protonic conductor candidates for intermediate temperature solid oxide fuel cells due to their high ionic conductivity and good sinterability. The aim of the present study is to fabricate a half-cell single-cell includes substrate, anode and electrolyte layers. The exact composition of BaZr 0.1 Ce 0.7 Y 0.2 O 3─δ (BZCY7) has been selected as a proton conducting electrolyte. The fabrication process of a dense electrolyte membrane on a NiO-BaZr 0.1 Ce 0.7 Y 0.2 O 3─δ (NiO-BZCY7) anode substrate has been studied by a copressing process after co-firing at 1400ºC. BZCY7 powders were synthesized by solid-state reaction method after calcinations at 1150ºC. A single phase was obtained at this low temperature. The phase composition of the resulting specimens was investigated using X-ray diffraction (XRD) analysis. Scanning electron microscope (SEM) was used to evaluate the features of the synthesized powders and also the condition of connected layers in half-cell.