Abstract: | A new class of solid Li+ ionic conductors has been found, related to the compound LiZr2(PO4)3. Solid solutions of the type Li1?xZr2?xTax(PO4)3 and Li1?xHf2?xTax(PO4)3 have conductivities of about 10?3ohm?1 cm?1 at 200°C, which are relatively independent of composition. These systems are compared with the recently discovered class of Na+ conductors Na1+xZr2P3?xSixO12. Other solid solutions are also discussed. |