Journal
CARBON
Volume 50, Issue 5, Pages 1966-1971Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2011.12.052
Keywords
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Funding
- Fundamental R&D Program for Technology of World Premier Materials
- Ministry of Knowledge Economy, Republic of Korea [20112020100070]
- Human Resources Development of the Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Korea government Ministry of Knowledge Economy [20114010203120]
- Ministry of Education, Science and Technology [2011K000691]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10037920, 20112020100070] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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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