NANOSIZE POWDERS OF SILVER-DOPED SODIUM COBALT OXIDE SYNTHESIZED BY POLYMERIZED COMPLEX METHOD
2005 ◽
Vol 04
(02)
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pp. 237-244
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Keyword(s):
X Ray
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Nanosized powders used for the preparation of bulk Na1.5Co2O4 and Ag -doped Na1.5Co2O4 nanosized crystalline grains were synthesized by the polymerized complex (PC) method. X-ray diffraction analysis revealed that the nondoped and Ag -doped PC products were composed of Co3O4 and Na2CO3 phases. After a subsequent calcination at 800°C, the nondoped PC product was converted to powder of single phase γ- NaxCo2O4 , whereas the Ag -doped PC products remained as mixed phases of Co3O4 and Na2CO3 and Ag2O with a small trace of γ- NaxCo2O4 . SEM and TEM investigations showed that all the calcined products were powders of about 200–500 nm particle size.
2013 ◽
Vol 566
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pp. 231-234
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2012 ◽
Vol 510-511
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pp. 201-205
Keyword(s):