Electrochemical Performances of the Binary Solvent Electrolytes with Lithium Bis(Oxalate)Borate

Abstract

Abstract. Lithium bis(oxalato)borate (LiBOB) is a promising salt for lithium ion batteries. The electrochemical behaviors of tetramethylene sulfone (TMS) / dimethyl sulfite (DMS) with different volume ratios of 1:2, 1:1, and 2:1 with 0.7 mol L-1 LiBOB salt are investigate in this work. Although the proportion of different solvents show different electrochemical performance, both of the LiBOB-based electrolytes show high oxidation potentials (> 5.5 V), and excellent film-forming characteristics.