Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/118298
Title: Synthesis of 5,6,11,12,17,18-hexaazatrinaphthylene Nanowires for Cathode Material in Lithium Battery
Authors: SU JIE
Keywords: Organic cathode materials, Nanowires, Lithium ion batteries, High capacity, Stability, Coulombic efficiency
Issue Date: 22-Aug-2014
Citation: SU JIE (2014-08-22). Synthesis of 5,6,11,12,17,18-hexaazatrinaphthylene Nanowires for Cathode Material in Lithium Battery. ScholarBank@NUS Repository.
Abstract: Organic molecule 5,6,11,12,17,18-hexaazatrinaphthylene (HAT) nanowires were synthesized and applied as cathode material for lithium ion batteries. The results demonstrate that the molecule has an outstanding cathode performance in the electrolyte consisting of LiTFSI dissolved in 1,3-dioxolane (DOL) and 1,2-dimethoxyethane (DME). During the charge-discharge process, two electrochemical reactions occur with the redox at 1.5 V and 2.5 V, displaying six electrons transfer. Electrochemical study shows that the molecules have several competitive properties, such as high capacity, stable cycling and high coulombic efficiency. The molecules exhibit a capacity of about 260 mAh/g at a current density of 100 mA/g. In addition, the molecules afford a capacity of 200 mAh/g at a current density of 400 mA/g, and this performance has been tested 500 cycles. It has a coulombic efficiency close to 100% and high capacity retention of 91% after 500 cycles.
URI: http://scholarbank.nus.edu.sg/handle/10635/118298
Appears in Collections:Master's Theses (Open)

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