| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 180049 | Electrochemistry Communications | 2012 | 4 Pages |
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 °C, while thermogravimetry indicates a stability extending up to 180 °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.
► Tetraethyleneglycol dimethylether lithium bis(oxalate)borate electrolyte is reported. ► Enhanced electrochemical properties are characteristics of the electrolyte. ► The electrolyte has low cost, high safety level and good response in lithium cells. ► The electrolyte is alternative to the fluorinated electrolyte in lithium ion battery.
