A tetraethylene glycol dimethylether-lithium bis(oxalate)borate (TEGDME-LiBOB) electrolyte for advanced lithium ion batteries
- Authors
- Lee, Dong-Ju; Hassoun, Jusef; Panero, Stefania; Sun, Yang Kook; Scrosati, Bruno
- Issue Date
- Jan-2012
- Publisher
- ELSEVIER SCIENCE INC
- Keywords
- Tetraethylene glycol dimethylether; TEGDME; Lithium bis(oxalate)borate; LiBOB; Electrolyte; Lithium ion battery
- Citation
- ELECTROCHEMISTRY COMMUNICATIONS, v.14, no.1, pp.43 - 46
- Indexed
- SCIE
SCOPUS
- Journal Title
- ELECTROCHEMISTRY COMMUNICATIONS
- Volume
- 14
- Number
- 1
- Start Page
- 43
- End Page
- 46
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/27615
- DOI
- 10.1016/j.elecom.2011.10.027
- ISSN
- 1388-2481
- 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.
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