LG Energy Solution and Seoul National University report experimental lithium manganese-rich cells retaining 92.2% of their energy after 883 cycles, achieved by changing charge and discharge voltages rather than materials. The chemistry replaces nickel and cobalt with manganese, a strategic raw material China refines almost all of and Europe barely produces.
LG Energy Solution and Seoul National University say experimental lithium manganese-rich cells kept 92.2% of their energy after 883 charge cycles, InsideEVs reported. Electric cars are usually expected to manage 1,000 to 2,000.
The fix was operating protocol rather than new materials. Lowering the charging cutoff from 4.6 to 4.3 volts lifted oxygen recovery from 86% to 97%, and discharging to 2 volts instead of 3 helped as well.
A lower-temperature formation step during manufacturing cut gas generation and structural damage.
Cell stability can be improved “through electrochemical protocol design alone“, said Professor Jongwoo Lim of Seoul National University.
