The spinel Li(Mn1-deltaTidelta)(2)O-4 electrode materials were synthesized by solid state reaction. The crystal structure by a Rietveld method and electrical properties by an impedance analyzer is characterized in the present study. The Mn3O4 second phase was shown in all samples. The titanium dissolved in Mn 16d-site, and the lattice constants increased and the electrical conductivity decreased with increasing titanium content. From the impedance analysis, the contribution of grain, grain boundary, and electrode was identified. Finally, the charge and discharge test was performed.