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Electrochemical Performance of Carbon/Silicon Composite as Anode Materials for High Capacity Lithium Ion Secondary Battery
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  • Journal title : Carbon letters
  • Volume 8, Issue 4,  2007, pp.335-339
  • Publisher : Korean Carbon Society
  • DOI : 10.5714/CL.2007.8.4.335
 Title & Authors
Electrochemical Performance of Carbon/Silicon Composite as Anode Materials for High Capacity Lithium Ion Secondary Battery
Kim, Taek-Rae; Wu, Jing-Yu; Hu, Quan-Li; Kim, Myung-Soo;
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 Abstract
Carbon/silicon composites were synthesized by mixing silicon powders with petroleum pitch and subsequent heat-treatment. The resultant composites were composed of carbon and nano-size crystalline silicon identified by XRD and EDX. FIB images and SEM images were taken respectively to detect the existence of silicon impregnated in carbon and the distribution of silicon on the carbon surface. The obtained carbon/silicon materials were assembled as half cell anodes for lithium ion secondary battery and their electrochemical properties were tested. The pitch/silicon composite (3 : 1 wt. ratio) heat treated at and mixed with 55.5 wt.% of graphite showed relatively good electrochemical properties such as the initial efficiency of 78%, the initial discharge capacity of 605 mAh/g, and the discharge capacity of 500 mAh/g after 20 cycles.
 Keywords
carbon;silicon;pitch;lithium ion secondary battery;anode materials;
 Language
Korean
 Cited by
1.
Performance of Expanded Graphite as Anode Materials for High Power Li-ion Secondary Batteries, Carbon letters, 2010, 11, 4, 343  crossref(new windwow)
2.
Preparation and Electroactivities of Carbon Nanotubes-supported Metal Catalyst Electrodes Prepared by a Potential Cycling, Carbon letters, 2009, 10, 3, 213  crossref(new windwow)