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On the synthesis and electrochemical characterization of ordered hierarchical NiO micro bouquets with trimodal pore size distribution

Thematic Areas : Nanosciences and Molecular Medicine

Publisher : Journal of Alloys and Compounds

Source : Journal of Alloys and Compounds, Elsevier Ltd, Volume 618, p.396-402 (2014)

Url : http://www.scopus.com/inward/record.url?eid=2-s2.0-84907195342&partnerID=40&md5=4c87fd54e480e28cb72a14e396042c02

Keywords : Electrochemical characterizations, Microporous materials, Nanostructures, Oxides, Thin films

Campus : Kochi

School : Center for Nanosciences

Center : Nanosciences

Department : Nanosciences and Molecular Medicine

Year : 2014

Abstract : The present study demonstrates a novel approach by which 'bulk nanostructured' NiO micro bouquets can be processed into a high surface area electrode for supercapacitor applications. A detailed study has been performed to elucidate the impact of porosity and redox reactions on the electrochemical behavior. The spheres were synthesized using a soft template technique. An intrinsic correlation between the surface area, capacitance and the internal resistance has been deduced and explained on the basis of relative contributions from the faradic properties of NiO. These NiO spheres exhibited specific mass capacitance values as high as 1950 F g-1. Further, coin cells employing these rechargeable electrodes were also demonstrated which exhibits energy and power densities of 17 W h kg-1and 24 kW kg-1. It has been shown that these electrodes based on such bulk nanostructures can allow significant room for high performance supercapacitor devices.

Cite this Research Publication : Pa Anjali, Sonia, T. Sa, Shakir, Ib, Nair, S. Va, and Balakrishnan, Aa, “On the synthesis and electrochemical characterization of ordered hierarchical NiO micro bouquets with trimodal pore size distribution”, Journal of Alloys and Compounds, vol. 618, pp. 396-402, 2014.

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