The extent of Mg insertion into α-phase samples was found to be less than that for Li and Na under comparable conditions. Room-temperature electrochemical measurements revealed the existence of 2 monophase regions, in MgxU3O8, when x was between 0.2 and 0.27; or was greater than 0.4. These regions shifted to higher x-values when the discharge temperature was increased to 100C. Ionic conductivity (table 204) coefficients were deduced by using a current-pulse method.

R.E.Dueber, J.M.Fleetwood, P.G.Dickens: Solid State Ionics, 1992, 50[3-4], 329-37

Table 204

Room-Temperature Partial Ionic Conductivity of Mg in MgxU3O8

 

x

σ (S/cm)

0.02

1.4 x 10-9

0.12

2.6 x 10-9

0.16

4.8 x 10-9

0.20

1.1 x 10-8

0.24

2.3 x 10-8

0.27

1.4 x 10-8

0.30

2.7 x 10-8

0.33

2.1 x 10-8

0.36

2.2 x 10-8

0.39

1.3 x 10-8

0.42

8.2 x 10-8

0.45

1.1 x 10-8