A R T I C L E D E T A I L S A B S T R A C TIn this study nickel chloride was reduced to its "nanoform" through a one-step synthesis protocol using the leaves extract of Moringa oleifera. Microscopic and spectroscopic techniques such as UV-vis., FTIR and SEM were used to confirm the formation of nickel nanoparticles. Electrochemical characterization using cyclic voltammetry and square wave voltammetry further reveals the electrochemical activity of synthesised nickel nanoparticles; as preliminary study on nitrite electro-oxidation shows that nickel nanoparticles can catalyse this process better than some other nanoparticles.