Electrical and mechanical properties of hot-pressed versus sintered LiTi2(PO4)3

The electrical and mechanical properties of hot-pressed versus sintered LiTi2(PO4)3 were investigated. The hot-pressed LiTi2(PO4)3 had a higher density and larger average grain size than the sintered material. As a result of these microstructural differences the hot-pressed material exhibited a higher total ionic conductivity and lower hardness. The electronic conductivity of both materials was the same and increased by a factor of about 107 when the hot-pressed and sintered materials were heated under a reducing atmosphere.