S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Material Science and Engineering (재료공학부) Journal Papers (저널논문_재료공학부)
Nano-graphite platelet loaded with LiFePO4 nanoparticles used as the cathode in a high performance Li-ion battery
- Kim, Haegyeom; Kim, Hyungsub; Kim, Sung-Wook; Park, Kyu-Young; Kim, Jinsoo; Jeon, Seokwoo; Kang, Kisuk
- Issue Date
- Carbon, Vol.50 No.5, pp.1966-1971
- LiFePO4 nanoparticles were grown on nano-graphite platelet (NGP) using a simple chemical route. The material was used as the cathode in Li-ion rechargeable batteries and exhibited excellent cyclability and rate capability because of the easy electron transport in it. The electrochemical stability of the electrode was improved by the two-dimensional conductive network of the NGP. The resulting electrodes delivered a specific capacity of about 150 mA h g(-1) at a current rate of 135 mA g(-1) (similar to 0.8 C) after 100 cycles with no capacity fade. At elevated current rates, the electrodes exhibited capacities of more than 100 mA h g(-1) a current density of 2000 mA g(-1) (similar to 12 C) without further incorporation of conductivity agents or coatings. (C) 2012 Elsevier Ltd. All rights reserved.
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