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Discharge behavior of lithium/sulfur cell with TEGDME based electrolyte at low temperature
- Authors
- Ryu, Ho-Suk; Ahn, Hyo-Jun; Kim, Ki-Won; Ahn, Jou-Hyun; Cho, Kwon-Koo; Nam, Tae-Hyun; Kim, Jong-Uk; Cho, Gyu-Bong
- Issue Date
- 7-Dec-2006
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- low temperature; Li/S cell; liquid electrolyte; TEGDME; DOXL; MA
- Citation
- JOURNAL OF POWER SOURCES, v.163, no.1, pp 201 - 206
- Pages
- 6
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF POWER SOURCES
- Volume
- 163
- Number
- 1
- Start Page
- 201
- End Page
- 206
- ISSN
- 0378-7753
1873-2755
- Abstract
- The low temperature behaviors of Li/TEGDNM/S cell was examined using discharge curves, SEM and impedance spectra. The first discharge capacity of Li/S cell with tetra(ethylene glycol) dimethyl ether (TEGDME) electrolyte was 1303 mAh g(-1)-sulfur at 20 degrees C, but 357 mAh g(-1)-sulfur at low temperature of -10 degrees C. The low temperature discharge characteristic is improved by adding 1,3-dioxolane (DOXL) and methylacetate (MA) to TEGDME electrolyte. The optimum composition of mixed electrolyte is MA-DOXL-TEGDME (5:47.5:47:5, v/v). The Li/S cell using the optimum electrolyte has the first discharge capacity of 994 and 1342 mAh g(-1)-S at -10 and 20 degrees C, respectively. (c) 2006 Elsevier B.V. All rights reserved.
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