Penyediaan serbuk lantanum strontium kobalt oksida melalui kaedah sol-gel terubahsuai

Translated title of the contribution: Preparation of lanthanum strontium cobalt oxide powder by a modified sol-gel method

Abdullah Abdul Samat, Mahendra Rao Somalu, Andanastuti Muchtar, Nafisah Osman

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A simple low temperature synthesis route has been presented for the preparation of single perovskite phase of La0.6Sr0.4CoO3-σ (LSCO) for cathode application in intermediate temperature proton conducting solid oxide fuel cell (SOFC). A wet chemical method namely a modified sol-gel method has been applied in this work. In this method, a combined citric acid and ethylenediaminetetraacetic acid (EDTA) has been used as a chelating agent. Ethylene glycol (EG) and activated carbon (AC) have been used as surfactants in this process. The synthesized powders were characterized by X-ray diffractometer (XRD), scanning electron microscope (FESEM) equipped with energy dispersive X-ray (EDX) spectrometer and particle size analyzer (PSA) for phase formation, morphology and particle size analysis, respectively. XRD result revealed that a single LSCO perovskite phase for both surfactants formed at calcination temperature of 900 °C. The produced single phase powders consist of homogeneous and almost identical shape of particles as shown in SEM images. However, the powder prepared using EG has a smaller average particle size diameter as compared with the powder prepared using AC which is 149 nm and 190 nm, respectively.

Original languageMalay
Pages (from-to)1458-1466
Number of pages9
JournalMalaysian Journal of Analytical Sciences
Volume20
Issue number6
DOIs
Publication statusPublished - 2016

Fingerprint

Lanthanum
Strontium
Powders
Sol-gel process
Ethylene Glycol
Diffractometers
Surface-Active Agents
Activated carbon
Particle size
X ray spectrometers
X rays
Chelating Agents
Solid oxide fuel cells (SOFC)
Edetic Acid
Citric Acid
Particle size analysis
Calcination
Temperature
Protons
Cathodes

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Penyediaan serbuk lantanum strontium kobalt oksida melalui kaedah sol-gel terubahsuai. / Samat, Abdullah Abdul; Somalu, Mahendra Rao; Muchtar, Andanastuti; Osman, Nafisah.

In: Malaysian Journal of Analytical Sciences, Vol. 20, No. 6, 2016, p. 1458-1466.

Research output: Contribution to journalArticle

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