Electrolytes
for LPF||Graphite
cells
Lithium iron phosphate (LFP) is the most widely used cathode material in commercial LIBs alongside NMC. LFP||graphite cells have a lower cell voltage and therefore a lower energy density than NMC graphite cells, but are characterized by higher safety, lower costs and their longevity.
Challenges
LFP contains neither nickel nor cobalt and does not tend to release oxygen due to its polyanionic structure in case of failure. The lithiation / delithiation of LFP is characterized by a stable potential plateau, meaning the cell voltage of LFP-containing cells remains relatively constant, independent of the state of charge. Due to the wide range of application, the electrolyte for LFP cells must be adapted to the specific use case.
The Solution
Formation: 3 cycles 0.1C CCCV charge / 0.1C CC discharge
Cycling rate: 1C CCCV charge / 1C CC discharge
Temperature: 40 °C
Voltage range: 3.65 – 2.5 V
