Open AccessSynthesis and characteristics of La0.6Sr0.4Co0.2Fe0.8O3-δ perovskite cathode material by microwave assisted sol – gel method
Author(s) -
Mai Thi Ngoc Tran,
Huỳnh Kỳ Phương Hạ,
MinhVien Le,
Thang Manh Ngo
Publication year - 2016
Publication title -
khoa học công nghệ
Language(s) - English
Resource type - Journals
ISSN - 1859-0128
DOI - 10.32508/stdj.v19i3.584
Subject(s) - materials science , calcination , nanocrystalline material , cathode , sol gel , perovskite (structure) , electrolyte , thermal expansion , microwave , chemical engineering , tec , analytical chemistry (journal) , solid oxide fuel cell , oxide , composite material , nanotechnology , catalysis , metallurgy , chromatography , chemistry , electrode , engineering , ionosphere , biochemistry , physics , quantum mechanics , astronomy
In this study, LSCF 6428 was synthesized by microwave assisted sol – gel method. XRD and SEM analyses were used to determine the single-phase and nanocrystalline structure. Properties of this perovskite material including specific area, thermal expansion coefficient (TEC) and resistance of cathode were studied. The results showed that well-crystalline perovskite was obtained at microwaved of 500 W in 10 minutes, stirred at 90 oC in 2 hours and calcined at 900 oC in 1 hours. The surface area of the material was 13.384 m2/g. The properties of materials were also improved by mixing with Gadolinium doped ceria (GDC) at the ratio 7:3 (w/w). At this ratio, TEC of composite matched with electrolyte. The resistance of cathode was 0.17 – 0.2 Ω in the range of temperature from 580 – 700 oC. Microwave assisted sol – gel was an easy, economical and time – saving method to synthesis LSCF 6428 for Single Chamber - Solid oxide fuel cell (SC-SOFC) cathode application.