Publication Type:

Journal Article

Source:

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

URL:

http://www.scopus.com/inward/record.url?eid=2-s2.0-84919472143&partnerID=40&md5=7512ff1c64739232307ece949839b518

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

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.

Notes:

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Cite this Research Publication

, “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.