fig3

Figure 3. (A) Initial charge/discharge profiles of fresh LFO and LFO-BF; (B) Initial charge/discharge profiles of LFO and LFO-BF after exposure to 60% RH air for 24h; (C) Initial charge/discharge profile of LFO-BF after exposure to 90% RH air for 6 h; (D) Ex situ XRD patterns of LFO-BF electrodes charged to 3.9 and 4.2 V. Selected diffraction features assigned to Li₂O, LiF, and the disordered rocksalt phase (DRP) are marked. RH: Relative humidity; XRD: X-ray diffraction; LFO-BF: NH₄BF₄-treated Li₅FeO₄.