Abstract
A single phase nanostructured nickel oxide (NiO) crystalline product was synthesized via a simple solvothermal synthesis protocol by using nitrate–citrate precursor having Ni(NO3)2 as starting material. The thermal decomposition of the as-formed gel precursor leading to the formation of crystalline NiO was monitored by TG analysis under ambient conditions. The as-prepared product was subjected to thermal treatment at 400 °C for 1 h in air, exhibited a single phase cubic structure as confirmed by XRD and the nanostructure of the product was characterized by FE-SEM and HR-TEM/SAED analysis. It is thus confirmed that the particle size of the product was found to be within 7–15 nm range. The rate-dependent cyclic voltammetry reveals the pseudocapacitive behavior of the product when employed as working electrode in a three-electrode electrochemical cell containing 1 M KOH aqueous electrolyte with platinum (pt) and saturated calomel electrode (SCE) as counter and reference electrodes, respectively, yielding a capacitance of ~200 F g-1.
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Contribution to ICMAT 2007, Symposium K: Nanostructured and bulk materials for electrochemical power sources, July 1-6, 2007, Singapore
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Nathan, T., Aziz, A., Noor, A.F. et al. Nanostructured NiO for electrochemical capacitors: synthesis and electrochemical properties. J Solid State Electrochem 12, 1003–1009 (2008). https://doi.org/10.1007/s10008-007-0465-3
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DOI: https://doi.org/10.1007/s10008-007-0465-3