1,3,2-Dioxathiolane-2,2-dioxide (DTD) was investigated as co-solvent for PC based electrolytes in combination with a graphite electrode. An amount of 10wt% of DTD in PC was used to form an effective and stable SEI on graphite during the first cycle. The decomposition of DTD takes place before PC cointercalation may happen, thus preventing the exfoliation of graphite. Additionally, the electrolyte, 1 M LiBF4 in PC:DTD (9:1, by wt.) was proven to be compatible with NCM electrodes. Raman spectra confirmed that LiBF4 completely dissociates into ions in PC:DTD (9:1, by wt.). The electrolyte shows better conductivities in comparison to other LiBF4 based electrolytes and good rate capability up to 5 C on graphite. Therefore, LiBF4 can be used as an alternative lithium salt in lithium-ion batteries, in combination with PC based electrolytes. (C) 2014 Elsevier Ltd. All rights reserved.