Nanostructured transition metal oxide, such as CuO is a potential candidate for supercapacitive energy storage for their dual benefit of large aspect ratio and pseudocapacitive charge storage mechanism. Nanorod morphologies of CuO are grown directly on Copper foil from a highly scalable and facile chemical bath through alkali mediated etching of Cu. The morphology obtained is highly favorable to charge storage mechanism due to large amount of active sites for redox reactions. Moreover, the as-prepared CuO is found to have mixed Cu(OH)<sub>2</sub> which assist in faradic process of electron transfer. The sample exhibited supercapacitive behavior with a nearly linear charge-discharge profile and specific capacitance in the range of 4-71 F/g depending on process conditions.

Pseudocapacitive energy storage in nanostructured CuO grown from a facile and scalable chemical route

254th National Meeting (2017)

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