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SCI Article

Rational Design of Low Cost and High Energy Lithium Batteries through Tailored Fluorine-free Electro
성명 선양국()
소속 공과대학 에너지공학과
캠퍼스
우수선정주 2018년 10월 2째주
Author Hwang, J. -Y. (Dept Energy Engn); 선양국 (Dept Energy Engn) corresponding author;
Corresponding Author Info Agostini, M; Matic, A (reprint author), Chalmers Univ Technol, Dept Phys, SE-41296 Gothenburg, Sweden.; Sun, YK (reprint author), Hanyang Univ, Dept Energy Engn, Seoul 04763, South Korea.
E-mail 이메일 아이콘yksun@hanyang.ac.kr
Document Type Article
Source CHEMSUSCHEM Volume:11 Issue:17 Pages:2981-2986 Published:2018
Times Cited 0
External Information http://dx.doi.org/10.1002/cssc.201801017
Abstract We report a new Li-S cell concept based on an optimized F-free catholyte solution and a high loading nanostructured C/S composite cathode. The Li2S8 present in the electrolyte ensures both buffering against active material dissolution and Li+ conduction. The high S loading is obtained by confining elemental S (approximate to 80%) in the pores of a highly ordered mesopores carbon (CMK3). With this concept we demonstrate stabilization of a high energy density and excellent cycling performance over 500 cycles. This Li-S cell has a specific capacity that reaches over 1000 mA hg(-1), with an overall S loading of 3.6 mg cm(-2) and low electrolyte volume (i.e., 10 mu L cm(-2)), resulting in a practical energy density of 365 Wh kg(-1). The Li-S system proposed thus meets the requirements for large scale energy storage systems and is expected to be environmentally friendly and have lower cost compared with the commercial Li-ion battery thanks to the removal of both Co and F from the overall formulation.
Web of Science Categories Chemistry, Multidisciplinary; GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY
Funding Chalmers Areas of Advance Materials Science and Energy, FORMAS; Swedish Energy Agency; National Research Foundation of Korea (NRF) - Ministry of Science, ICT, and Future Planning [NRF-2017R1A4A1015711]
Language English
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