Advanced Nonflammable Localized High?Concentration Electrolyte For High Energy Density Lithium Battery

The key to realize long-life high energy density lithium batteries is exploit functional electrolytes capable of stabilizing both voltage cathode and anode. emergence localized high-concentration (LHCEs) shows great promise for ameliorating the above-mentioned interfacial issues. In this work, a difluoro(oxalate)borate (LiDFOB) based nonflammable dual-anion LHCE designed prepared. Dissolving in mixture trimethyl phosphate (TMP) /1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropylether (D2), continuously consumption LiDFOB suppressed by simply introducing nitrate (LiNO3). Meantime, as most TMP molecular are coordinated with Li+, electrolyte does not show incompatibility issue between neither metal nor graphite Therefore, it demonstrates excellent capability interface Ni-rich regulating deposition morphology. Li||LiNi0.87Co0.08Mn0.05O2 (NCM87) exhibit capacity retention more than 90% after 200 cycles even under cutoff 4.5 V, 1 C rate. This study offers prospective method develop safe suitable applications, thus providing higher densities.