Fig. 8 | npj Computational Materials

Fig. 8

From: Electrochemically driven conversion reaction in fluoride electrodes for energy storage devices

Fig. 8

Comparison of energy efficiency and energy density of (a) FeF3, (b) FeOF, (c) LiFePO4, and (d) transition metal oxide (NMC) based on their discharge–charge curves. The energy efficiency values are 70.7% and 74.1% for FeF3 and FeOF, respectively, which are lower than those of typical LiFePO4 (93.9%) and NMC (95.8%), although the energy densities of (oxy)fluorides are much higher and amount up to 1341.7 and 745.2 Wh/kg for FeF3 and FeOF, respectively, at 100 mA/g

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