BaSnF4 — A new fluoride ionic conductor with the α-PbSnF4 structure☆

Defect‐enhanced F– ion conductivity in layer‐structured nanocrystalline BaSnF4 prepared by high‐energy ball milling combined with soft annealing

“…In agreement with the study of Chadwick et al [7] this value represents one of the highest conductivities reported for BaSnF 4 when the mechanosynthesized product studied here is compared with samples prepared via other routes such as high temperature synthesis, wet chemical methods or other mechanochemical approaches including the various types of ball milling [4][5][6][7].…”

“…However, comparisons of published literature data points to a strong dependency of the conductivity on the preparation method applied [4][5][6][7].…”

Preparation of COF2 using CO2 and F2 in the electrochemical cell with PbSnF4 as a solid electrolyte

“…The phase transitions in PbSnF 4 were already reported around 355 K [13,17,22]. It has been reported that the change in the slope of Arrhenius plots of tetragonal PbSnF 4 are found around 355 K from the high-activation-energy region to the low-activation-energy region in the literatures [8,17,22,28].…”

“…In this study, a linear part in the Cole-Cole plot was extrapolated to the highfrequency side and the value was regarded as resistance of the sample because factors were not calculable. The value of the extrapolated right crossing point of the impedance spectra to the real axis corresponding to dc resistance was about 65 V at 323 K. That is, dc conductivity was calculated as 0.54 Sm À1 at 323 K. A value higher than the reference value in the literature [11,13,22] was obtained in air and Ar. Tetragonal PbSnF 4 exhibited the highest conductivity of 3.2 Sm À1 at 473 K in air.…”

“…Tetragonal PbSnF 4 [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] is known as a fluoride ion conductor having high electric conductivity at ambient temperatures. PbSnF 4 can exist in several polymorphic forms as described by many reports [7,8,[14][15][16], and has a very complex system of phase transitions.…”