The present invention provides electrochemical cells providing good
electronic performance at low temperatures. Electrochemical cells of the
present invention include lithium batteries capable of providing useful
specific capacities under significant discharge rates for temperatures as
low as -60 degrees Celsius. The present invention also provides methods
for making electrochemical cells including a room temperature
predischarge step preceding low temperature operation that enhances the
performance of batteries having subfluorinated carbonaceous positive
electrode active materials at low temperatures.