Open AccessDevelopment of Sr0.6Ba0.4Ce0.9Pr0.1O3-δ Electrolyte for Proton-Conducting Solid Oxide Fuel Cell Application
Author(s) -
Nur Wardah Norman,
Wan Nor Anasuhah Wan Yusoff,
Abdul Azim Jais,
Mahendra Rao Somalu,
Andanastuti Muchtar
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/268/1/012147
Subject(s) - electrolyte , thermogravimetric analysis , materials science , thermal stability , oxide , calcination , analytical chemistry (journal) , amorphous solid , nuclear chemistry , chemical engineering , chemistry , crystallography , metallurgy , electrode , biochemistry , chromatography , engineering , catalysis
Sr 0.6 Ba 0.4 Ce 0.9 Pr 0.1 O 3-δ is synthesized by the glycine–nitrate method. The synthesized powder and resultant electrolyte pellet are systematically characterised for proton-conducting solid oxide fuel cell application. The thermal decomposition and purity of the electrolyte powder were analysed by thermogravimetric analysis (TGA) and X-ray diffraction (XRD), respectively. The morphological structure and chemical stability of the electrolyte pellets are examined by field-emission scanning electron microscopy (FESEM) and XRD, respectively. The selective material decomposes at 1000 °C as recorded by TGA. The calcined powder at 1000 °C is used to produce the electrolyte pellet. The pellet sintered at 1400 °C achieves the average relative density of 94% as measured by Archimedes’ method and displays good grain growth with a visible grain boundary. The chemical stability of the pellet is also determined under boiling water for 2 h. The tolerance towards H 2 O for the sample improved with the presence of Sr upon exposure to boiling water even though some amorphous phase forms. Based on the result, Sr 0.6 Ba 0.4 Ce 0.9 Pr 0.1 O 3- δ is considered as a potential electrolyte for proton-conducting solid oxide fuel cells.