Discharge behavior of lithium/sulfur cell with TEGDME based electrolyte at low temperature

被引：139

作者：

Ryu, Ho-Suk ^{[1
]}

Ahn, Hyo-Jun ^{[1
]}

Kim, Ki-Won ^{[1
]}

Ahn, Jou-Hyun ^{[1
]}

Cho, Kwon-Koo ^{[1
]}

Nam, Tae-Hyun ^{[1
]}

Kim, Jong-Uk ^{[1
]}

Cho, Gyu-Bong ^{[1
]}

机构：

[1] Gyeongsang Natl Univ, Informat Technol Res Ctr Energy Storage & Convers, Div Adv Mat Sci & Engn, Jinju 660701, South Korea

来源：

JOURNAL OF POWER SOURCES | 2006年 / 163卷 / 01期

关键词：

low temperature; Li/S cell; liquid electrolyte; TEGDME; DOXL; MA;

D O I：

10.1016/j.jpowsour.2005.12.061

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：201 / 206

页数：6

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