fig2
From: Insights into the electrochemical performance of metal fluoride cathodes for lithium batteries

Figure 2. Reaction pathways of FeF3-FeF2 cathode. The reference phases in the phase diagram are indicated by light blue circles to show the positions of A- and B-LixFeyF3, whose Fe concentration is off-stoichiometric. Reproduced from Ref.[7] with permission. Copyright 2021 Springer Nature.