Author/Authors :
Sook-Keng, Chang Universiti Putra Malaysia - Faculty of Science - Department of Chemistry, Malaysia , Zainal, Zulkarnain Universiti Putra Malaysia - Faculty of Science - Department of Chemistry, Malaysia , Kar-Ban, Tan Universiti Putra Malaysia - Faculty of Science - Department of Chemistry, Malaysia , Yusof, Nor Azah Universiti Putra Malaysia - Faculty of Science - Department of Chemistry, Malaysia , Wan Yusoff, Wan Mohamad Daud Universiti Putra Malaysia - Faculty Of Science - Department Of Physics, Malaysia , Prabaharan, S.R.S. University of Nottingham Malaysia Campus - Faculty of Engineering - Department of Electrical and Electronics Engineering, Malaysia
Abstract :
The effect of composition on nickel cobaltites prepared by co-precipitation was investigated. Various compositions were synthesised under different heat treatment conditions. The formation mechanism, lattice parameter and crystallite size were determined by various techniques. X-ray diffraction (XRD) analysis revealed that the optimum condition for the formation of single phase nickel-cobalt oxide (NiCo2O4) can be obtained from solution containing Ni: Co ratio of 33.3 mol%: 66.7 mol% with heat treatment at 400°C. The presence of pure phase NiCo2O4 with the particle size of approximately 34.10 nm was also observed in field emission scanning electron microscopy (FESEM). The crystallinity of the synthesized oxides was improved with the increment of Ni content
Keywords :
Composition , co , precipitation , nanosized , nickel , cobalt oxide , phase formation
