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SCI Article

Micron-sized, carbon-coated Li4Ti5O12 as high power anode material for advanced lithium batteries
Author Jung, Hun-Gi (Dept WCU Energy Engn); Scrosati, Bruno (Dept WCU Energy Engn); Sun, Yang-Kook (Dept WCU Energy Engn); Jung, Hun-Gi (Dept Chem Engn); Kim, Junghoon (Dept Chem Engn); Sun, Yang-Kook (Dept Chem Engn);
Corresponding Author Info Scrosati, B (reprint author), Hanyang Univ, Dept WCU Energy Engn, Seoul 133791, South Korea.
E-mail 씠硫붿씪 븘씠肄
Document Type Article
Source JOURNAL OF POWER SOURCES Volume:196 Issue:18 Pages:7763-7766 Published:2011
Times Cited 52
External Information PDF 븘씠肄http://dx.doi.org/10.1016/j.jpowsour.2011.04.019
Abstract Spherical, high tap density, carbon-coated Li4Ti5O12 powders are synthesized by a spray-drying process followed by a facile pitch coating. XRD, SEM, TEM analyses show that the carbon layer uniformly coats the Li4Ti5O12 particles without producing any crystalline changes. We demonstrate that the carbon coating significantly increases the electrical conductivity of Li4Ti5O12 making it an efficient, high rate electrode for lithium cells. The electrochemical tests in fact confirm that the 3.25 wt% carbon-coated Li4Ti5O12 electrode operates with ultra high rate capacity levels, i.e., 100 C and has excellent capacity retention and charge-discharge efficiency for a life extending over 100 cycles. (C) 2011 Elsevier B.V. All rights reserved.
Web of Science Categories Electrochemistry; Energy & Fuels
Funding Ministry of Education, Science and Technology [R31-10092]; Korea government Ministry of Knowledge Economy [20104010100560]; Ministry of Education, Science and Technology (MEST) of Korea [2010-0001842]
Language English
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