Table 3 Changes of phase fractions of the RP-type phases at different states of charge.

From: High cycle life all-solid-state fluoride ion battery with La2NiO4+d high voltage cathode

 

Phase 1 (low fluorine content phase) [%]

Phase 2 (low fluorine content phase) [%]

Phase 3 (high fluorine content phase) [%]

Phase 4 (high fluorine content phase) [%]

Summation of low fluorine content phases [%]

Summation of high fluorine content phases [%]

30 mAh/g/after charge

32.7 (±5)

31.1 (±1)

26.8 (±5)

9.5 (±2)

63.5 (±7)

36.3 (±5)

30 mAh/g/after discharge

47.1 (±4)

40.51 (±6)

4.8 (±1)

7.6 (±1)

87.6 (±7)

12.4 (±1)

50 mAh/g/after charge

38.6 (±3)

15.7 (±1)

19.4 (±1)

26.2 (±2)

54.4 (±3)

45.7 (±2)

50 mAh/g/after discharge

45.8 (±2)

46.3 (±2)

1.5 (±0.1)

6.3 (±0.3)

92.1 (±3)

7.9 (±0.3)

  1. Relative fractions of the different phases of the La2NiO4+d(Fy) active cathode material after charge and discharge against Zn-ZnF2 (at T = 170 °C, Icharge = +24 µA/cm2, and Idischarge = −12 µA/cm2) at the tenth and sixth cycle for the cutoff capacities of 30 and 50 mAh/g, respectively. Further details of the Rietveld refinement can be found in Supplementary Table 9.
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