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Defining role of the Surface and Bulk Contributions in Camphoric Carbon Grafted Lithium Nickel Manganese Oxide Powders for Lithium ion Batteries

Publication Type : Journal Article

Thematic Areas : Nanosciences and Molecular Medicine

Publisher : Ceramics International

Source : Ceramics International, Elsevier Ltd, Volume 41, Number 2, p.3269-3276 (2015)

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Keywords : Battery management systems, camphor, Capacity retention, Carbon, Composite electrode, Composite materials, Convergence of numerical methods, Depth of discharges, Diffusion-controlled process, Electric batteries, Electric discharges, Electrodes, Grafting (chemical), Lithium, Lithium alloys, Lithium batteries, Lithium compounds, Lithium nickel manganese oxides, Lithium-ion battery, Manganese, Manganese oxide, Nickel, Oxides, Powders, Relative contribution, Secondary batteries, Solar cells, Specific capacities

Campus : Kochi

School : Center for Nanosciences

Center : Amrita Center for Nanosciences and Molecular Medicine Move, Nanosciences

Department : Nanosciences

Year : 2015

Abstract : In the present study, lithium nickel manganese oxide powders grafted with camphoric nano-carbons have been exploited to fabricate high voltage, high capacity rechargeable electrodes for Li storage. The prepared lithium nickel manganese oxide particles were pyrolyzed using a camphoric solution to graft porous camphoric carbon layer on to the surface. A detailed study was performed to elucidate the effect of carbon content on the performance of the electrode. Relative contributions of capacitive and diffusion-controlled processes underlying these composite electrodes have been mathematically modeled. The lithium nickel manganese oxide composites showed two times higher conductivity as compared to the pristine samples. These electrodes exhibited a specific capacity value of  154 mAhg-1 and showed good rate capability. The capacity fading was found to be  17% at the end of 200 cycles for 100% depth of discharge. The specific capacity and capacity retention for these blends were found to be  10% and  40% higher respectively than pristine powders which are promising considering their low cost and facile fabrication process. © 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

Cite this Research Publication : K. H. Anupriya, Ranjusha, R., Shantikumar V Nair, Balakrishnan, A., and Subramanian, K. R. V., “Defining role of the Surface and Bulk Contributions in Camphoric Carbon Grafted Lithium Nickel Manganese Oxide Powders for Lithium ion Batteries”, Ceramics International, vol. 41, pp. 3269-3276, 2015.

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