Rational Design of Low Cost and High Energy Lithium Batteries through Tailored Fluorine-free Electrolyte and Nanostructured S/C Composite
- Authors
- Agostini, M.; Lim, D. -H.; Sadd, M.; Hwang, J. -Y.; Brutti, S.; Heo, J. W.; Ahn, J. H.; Sun, Y. K.; Matic, A.
- Issue Date
- Sep-2018
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- batteries; composite; electrolyte; lithium-ion; Li-S battery
- Citation
- CHEMSUSCHEM, v.11, no.17, pp.2981 - 2986
- Indexed
- SCIE
SCOPUS
- Journal Title
- CHEMSUSCHEM
- Volume
- 11
- Number
- 17
- Start Page
- 2981
- End Page
- 2986
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/3321
- DOI
- 10.1002/cssc.201801017
- ISSN
- 1864-5631
- 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 (≈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 h g−1, with an overall S loading of 3.6 mg cm−2 and low electrolyte volume (i.e., 10 μL 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.
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