Abstract
We synthesized polycrystalline sodium cobalt oxide (NaCoO2) by using solid state reaction (SSR) method in a magnetic field. The powder of Na2CO3 and Co3O4 were mixed by ball milling and compacted in a magnetic field. The characterization of microstructure of powder size and crystal structure were analyzed through XRD. Thermoelectric properties and the lattice parameter of NaCoO2 showed little change in magnetic field. The lattice parameters of NaCoO2 are a = 2.8443 Å, b = 2.8443 Å, and c = 10.8091 Å in the hexagonal structure (a = b ≠ c).
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