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Spinel-Structured NiCo2O4 Nanorods as Energy Efficient Electrode for Supercapacitor and Lithium Ion Battery Applications

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Nickel cobaltite (NiCo2O4) nanorods with different aspect ratios have been successfully prepared by facile synthetic method from nickel-cobalt-oxalato complex as a single-source precursor without using any template. The as-prepared complex itself exhibits nanorod morphology due to its polymeric chain-like structure, which under calcination process converted into nickel cobaltite retaining its one-dimensional morphology. The growth of nanorods has a major dependence upon factors such as molar ratios of Ni- and Co-salts, reaction temperature, duration and pH of the medium. The nanorod morphology is expected to provide better electronic transportation in compared to zerodimensional nanomaterials. Accordingly, NiCo2O4 nanorods upon exploitation as electrode material in supercapacitor and lithium ion battery applications showed good electrochemical performances. As supercapacitor, they exhibited large charge storage capacity with the specific capacitance value of ∼200 F g−1 at a current rate of 1 A g−1 and good cyclic stability. The material also demonstrated a capacity as high as ∼600 mAh g−1 and a progressive capacity 400 mAh g−1 after 25 cycles while deployed as an anode material in lithium ion battery applications.
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Keywords: Growth Mechanism; Lithium Ion Battery; Mixed Metal Oxides; Nanorods; Supercapacitor

Document Type: Research Article

Affiliations: 1: Department of Chemistry, Birla Institute of Technology Mesra, Ranchi 835215, Jharkhand, India 2: CSIR-Central Electrochemical Research Institute, Karaikudi 630006, Tamil Nadu, India 3: Surface Engineering and Tribology Division, CSIR – Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur 713209, West Bengal, India 4: Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India

Publication date: September 1, 2016

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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