Calcium- and sulfate-functionalized artificial cathode–electrolyte interphases of Ni-rich cathode materials

Advanced electrochemical and mechanical performance of a LiNi0.91Co0.06Mn0.03O2 cathode via use of a NaCl flux agent

“…In contrast, PC-NCM is known to experience an increase in surface area due to the formation of micro-cracks and particle destruction during cycling, resulting in an overgrowth of the CEI layer caused by excessive contact between the electrolyte/electrode, leading to an increase in resistance. 38,39 Fig. 3 FE This result suggests that SC-NCM exhibits remarkable reversible phase transitions during the cycling process compared to PC-NCM, while also demonstrating SC-NCM's excellent capacity retention and structural stability.…”

1, 2‐Propyleneglycol sulfite as a surface stabilizing agent for Ni‐rich layered oxide cathodes of lithium‐ion batteries

“…The cell with the electrolyte without PGS additive revealed 11.0 Ω ( R CEI ) and 40.1 Ω ( R CT ) of internal resistances, and the cell with 2.0 PGS electrolyte exhibited 12.3 Ω ( R CEI ) and 18.1 Ω ( R CT ) after 1 cycle. The increased R CEI of the cell with 2.0 PGS at the initial cycle is interpreted by the increase in the migration pathway of Li + as the formation of CEI layers 39‐41 . After 60 cycles, it was confirmed that overall resistances of the cell with the 2.0 PGS electrolyte were markedly lower than those of cells with the standard electrolyte: 58.5 Ω ( R CEI ) and 125.0 Ω ( R CT ) for the standard electrolyte, and 52.2 Ω ( R CEI ) and 37.8 Ω ( R CT ) for the 2.0 PGS‐containing electrolyte.…”

“…The EIS spectra supported this explanation (Figure 4C,D layers. [39][40][41] After 60 cycles, it was confirmed that overall resistances of the cell with the 2.0 PGS electrolyte were markedly lower than those of cells with the standard electrolyte: 58.5 Ω (R CEI ) and 125.0 Ω (R CT ) for the standard electrolyte, and 52.2 Ω (R CEI ) and 37.8 Ω (R CT ) for the 2.0 PGS-containing electrolyte. This showed that the PGS additive effectively suppressed electrolyte decomposition in the cell.…”

A Review on Electrode Materials of Fast‐Charging Lithium‐Ion Batteries

“…The cathode materials play an important role in LIBs’ electrochemical performance. The commonly used cathode materials include LiFePO 4 (LFPO), [21] LiNi x Co y Mn z O 2 [22] and LiCoO 2 (LCO) [23] (Figure 2). LiFePO 4 possesses a theoretical specific capacity of 170 mAh g −1 .…”