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Effects of sulfur doping on graphene-based nanosheets for use as anode materials in lithium-ion batteries

Cited 144 time in Web of Science Cited 144 time in Scopus
Authors
Yun, Young Soo; Le, Viet-Duc; Kim, Haegyeom; Chang, Sung-Jin; Baek, Seung Jae; Park, Sungjin; Kim, Byung Hoon; Kim, Yong-Hyun; Kang, Kisuk; Jin, Hyoung-Joon
Issue Date
2014-09
Citation
Journal of Power Sources, Vol.262, pp.79-85
Keywords
Lithium-ion batteryAnodeGrapheneSulfurDoping
Abstract
Graphene-based nanosheets (GNS) have been studied for use in electrochemical energy storage devices. A deeper understanding about the system is required for achieving enhanced power output and high energy storage. The effects of sulfur doping on the electrochemical properties of GNS are studied for their use as an anode material in lithium-ion batteries. Sulfur doping in GNS contributes to the high specific capacity by providing more lithium storage sites due to Faradaic reactions. In addition, superior rate performance of sulfur-doped GNS (S-GNS) is achieved through the improved electrical conductivity of S-GNS (1743 S m(-1)), which is two orders of magnitude higher than that of GNS (32 S m(-1)). In addition, good cyclic stability of S-GNS is maintained even after 500 cycles at a high current density of 1488 mA g(-1) (4 C). (C) 2014 Elsevier B.V. All rights reserved.
ISSN
0378-7753
URI
http://hdl.handle.net/10371/165103
DOI
https://doi.org/10.1016/j.jpowsour.2014.03.084
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Material Science and Engineering (재료공학부) Journal Papers (저널논문_재료공학부)
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