Table 1. CE, SEI Formation Capacity and Dead Li Capacity in the First Cycle Calculated Using the Dead LiNMR Intensity Determined by In Situ NMR and the CE Determined from Electrochemistrya.
electrolyte | coulombic efficiency | SEI formation capacity (mAh/cm2) | dead Li capacity (mAh/cm2) |
---|---|---|---|
LP30 | 85 ± 2% | 0.09 ± 0.005 | 0.06 ± 0.02 |
LP30 + FEC | 90 ± 1% | 0.09 ± 0.01 | 0.01 ± 0.001 |
DOL/DME | 75 ± 3% | 0.16 ± 0.01 | 0.11 ± 0.03 |
The standard deviation is that derived from the three separate in situ NMR experiments.