Study of electrochemical processes occurring on FeS2 electrode in liquid nonaqueous electrolytes of lithium battery

Resilient carbon encapsulation of iron pyrite (FeS2) cathodes in lithium ion batteries

“…5a) revealed a behavior consistent with the literature; [48] between the initial and 20th cycles the lithiation and delithiation peaks were observed to shift from 1.37 V (E Lith ) and 1.93 V (E Delith ) to 1.34 V and 2.05 V, respectively. Furthermore, the current intensity decreased dramatically.…”

Solid State Enabled Reversible Four Electron Storage

“…However, the time needed for the cubic-FeS 2 electrode to reach equilibrium is much longer than the 24 hours provided in that study. [ 25 ] When a cubic-FeS 2 solid-state cell is allowed up to 144 hours to establish equilibrium during its initial discharge at 60 ° C, the open circuit voltage (OCV) of the cell approaches the voltage of a subsequent discharge at the appropriate reaction coordinate, x. The results of coulometric titration are compared to 1 st , 2 nd , and 10 th discharges of the solid-state cell cycled at 60 ° C (Figure 4 a).…”