Sintered ceramic samples of pure and some copper doped layered sodium lithium tri-titanate (Na_1.9Li_0.1Ti_3-X Cu_XO_7-X) materials with different dopant molar percentages (0.06 octahedra due to the substitution of copper as Cu²⁺ at Ti⁴⁺ sites in the lattice is proposed in this paper. Furthermore, three distinct regions have been identified in log(σ_d.c.T) versus 1000/T plots. The lowest temperature region is attributed to electronic hopping conduction (polaron) for all copper doped derivatives and ionic conduction for lithium substituted Na₂Ti₃O_7.The mechanism of conduction in the intermediate region is associated interlayer ionic conduction and in the highest temperature region is associated modified interlayer ionic conduction.