The spinel found in this system had a conductivity of 0.073S/cm at 400C (table 30). High-temperature X-ray diffraction revealed a phase transition from a distorted structure to a cubic structure at about 270C for Li2MnBr4. The conductivity results suggested that the transitions corresponded to those from low to high conductivity phases. When Li ions were substituted for the Mn ions, the conductivity increased only in the case of the cubic spinel. No appreciable compositional dependence of the conductivity or activation energy for conduction was observed in the case of the distorted structures.

R.Kanno, Y.Takeda, O.Yamamoto, C.Cros, W.Gang, P.Hagenmuller: Journal of the Electrochemical Society, 1986, 133[5], 1052-6

Table 30

Conductivities in the LiBr-MnBr2 System