A tetraethylene glycol dimethylether-lithium bis(oxalate)borate (TEGDME-LiBOB) electrolyte for advanced lithium ion batteries

Title
A tetraethylene glycol dimethylether-lithium bis(oxalate)borate (TEGDME-LiBOB) electrolyte for advanced lithium ion batteries
Author
선양국
Keywords
Tetraethylene glycol dimethylether; TEGDME; Lithium bis(oxalate)borate; LiBOB; Electrolyte; Lithium ion battery
Issue Date
2012-07
Publisher
ELSEVIER SCIENCE INC, 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
Citation
ELECTROCHEMISTRY COMMUNICATIONS, 권: 14, 호: 1, 페이지: 43-46
Abstract
Tetraethylene glycol dimethylether-lithium bis(oxalate)borate (TEGDME-LiBOB) electrolyte is here studied. Electrochemical impedance spectroscopy (EIS) measurements demonstrate that the electrolyte has conductivity higher than 10(-3) S cm(-1) at room temperature and about 10(-2) S cm(-1) at 60 degrees C, while thermogravimetry indicates a stability extending up to 180 degrees C. Sweep voltammetry of the electrolyte shows anodic stability extending over 4.6 V vs. Li and cathodic peak at about 1.5 V vs. Li/Li+, caused by a decomposition of LiBOB salt, and following prevented by using a pre-treated Sn-C anode. Furthermore, LiFePO4 electrode is successfully used as cathode in a lithium cell using the TEGDME-LiBOB electrolyte. The promising electrochemical results, the low cost and the very high safety level candidate the electrolyte here reported as a valid alternative to the conventional electrolyte based on fluorinated salts presently used in the lithium ion battery field. (C) 2011 Elsevier B.V. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S1388248111004425?via%3Dihubhttp://hdl.handle.net/20.500.11754/40032
ISSN
1388-2481
DOI
10.1016/j.elecom.2011.10.027
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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