Fig. 4: Li-ion cell performance with various electrolyte solutions.

A Constant-current charge capacity of each electrolyte, averaged from two cells. B Constant-current discharge capacity of each electrolyte, averaged from two cells. C Bar chart of each cell's discharge capacity after 4 C charge—cycle 7 on panels A and B. D Relationship between performance at 4 C rate-test step and capacity of cell after five back-to-back 4 C charge cycles; unfilled markers are cells that did not make it five cycles—the last cycle capacity is reported here.