Innovative, Non-Corrosive LiTFSI Cyanoester-Based Electrolyte for Safer 4V Lithium-Ion Batteries

Here, we report on methyl 3-cyanopropanoate (MCP) in combination with the conductive salt lithium bis(trifluoromethane)sulfonyl imide (LiTFSI) as a safe single-solvent electrolyte for lithium-ion batteries (LIBs). To investigate the extent of anodic aluminum dissolution, an innovative electrochemical technique was introduced. Long-term full-cell [LiNi1/3Mn1/3Co1/3O2 (NMC111)/graphite] cycling results confirm the applicability of the LiTFSI/MCP-based electrolyte with state-of-the-art LIB active materials.