Lithium insertion reactions carried out on the potassium silicophosphates, KT3P6Si2O25, KMo3P6Si2O25. KMo2TiP6Si2O25 and KSn2TiP6Si2O25 show the formation of LixM3P6Si2O25 phases with optimal stoichiometries of x = 2, 2, 2 and 1, respectively. These compounds exhibit 3D intersecting tunnel structures. Lithiation does not result in any observable changes in the electronic conductivity of the hosts which remain electronic insulators. Complex impedance measurements confirm that these compounds have relatively low activation energies for ionic conduction in agreement with the observed ion-exchange properties.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering