Synthesis and characterization of Ni(OH)2 nanopowders and NiO:8YSZ composites

Kumar, A (2014) Synthesis and characterization of Ni(OH)2 nanopowders and NiO:8YSZ composites. BTech thesis.



In the current work nickel hydroxide powder was synthesized through the precipitation method by using 0.5 molar sodium hydroxide solution, 1 molar nickel chloride hexahydrate solution and hydrazine hydrate solution. Three different powders were prepared by varying the amount of hydrazine hydrate solution (5 ml, 10 ml and 20 ml). XRD analysis of the as synthesis powders shows that on increasing the amount of hydrazine hydrate solution the powder becomes more crystalline and to get the amorphous nickel hydroxide synthesis requires small amount of hydrazine solution. Amorphous nickel hydroxide has smaller particle size and higher surface area of 132.87 m2/g. Morphology of as-synthesised powders indicated that the lower amount of hydrazine results in particle size of nanometre range. The DSC-TG curve shows that there is maximum percentage of mass loss at around 3000C which is due to conversion of nickel hydroxide into nickel oxide. The calcined powders of Ni(OH)2 and 8 wt.% YSZ was used for preparing NiO: 8YSZ composites. Microstructure and EDS mapping was performed to understand the NiO distribution in 8YSZ matrix.

Item Type:Thesis (BTech)
Uncontrolled Keywords:Nickel hydroxide; Nickel oxide; YSZ; Anode; Microstructure, X-ray diffraction
Subjects:Engineering and Technology > Ceramic Engnieering > Ceramic Processing
Divisions: Engineering and Technology > Department of Ceramic Engineering
ID Code:5843
Deposited By:Hemanta Biswal
Deposited On:20 Aug 2014 13:58
Last Modified:20 Aug 2014 13:58
Supervisor(s):Nayak, B B

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