Open AccessPerformance of LiCo0.6Zn0.4O2 as a potential cathode material candidate for intermediate solid oxide fuel cell application
Author(s) -
Wan Nor Anasuhah Wan Yusoff,
Nur Wardah Norman,
Nafisah Osman,
Mahendra Rao Somalu,
Andanastuti Muchtar,
Nurul Akidah Baharuddin
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 - 10.1088/1755-1315/268/1/012139
Subject(s) - calcination , crystallite , materials science , oxide , particle size , cathode , lithium (medication) , solid oxide fuel cell , transmission electron microscopy , conductivity , powder diffraction , chemical engineering , analytical chemistry (journal) , mineralogy , metallurgy , nanotechnology , crystallography , chemistry , anode , electrode , chromatography , engineering , endocrinology , catalysis , medicine , biochemistry
Li-based materials, previously used in lithium batteries, are now actively applied in solid-oxide fuel cells (SOFCs). The synthesis and characterisation of LiCo 0.6 Zn 0.4 O 2 (LCZO) cathode powder calcined at 600 °C for SOFC application has been reported. In the present work, LCZO powder was calcined at 700 °C and its properties were investigated. Results showed that the impure phases recorded through X-ray diffraction (XRD) in a previous work decreased with the ZnO phase at approximately 37.4%, and 62.6% of LCZO remained. Transmission electron microscopy was used to study the morphology of the calcined powder, wherein the crystallite size obtained from XRD well agreed with the XRD analysis result. The LCZO particle size calcined at 700 °C was examined with a particle-size analyser. The electrical conductivity of bulk pellet was tested at 400–700 °C, and the highest conductivity of 9.90 Scm −1 was recorded at 700 °C. Overall, this material exhibited excellent potential for proton-conducting SOFCs application.