Author(s)

Nouha Jaafar, Sonia Naamen, Hafsia Ben Rhaiem, Abdesslem Ben Haj Amara^*

Laboratory of Physics of Lamellar Hybrid Materials and Nanomaterials, Department of Physics, Faculty of Science of Bizerte, University of Carthage, Bizerte, Tunisia.

Keying of lithium chloride alkali halide salt into the interlamellar space of nacrite clay mineral leads to a stable hybrid material that after calcination under inert atmosphere at 723 - 873 K induces an amorphous metahybrid. The electrochemical impedance spectroscopy (EIS) was performed to investigate the electric/dielectric properties of the hybrid with various parameters: frequency and temperature. Equivalent circuit was proposed to fit the EIS data. The experiment results show that the ionic conduction mechanism is related to the motion of Li⁺ cations which are thermally activated, named the hopping model. Furthermore, the resulting metahybrid obtained from dehydroxylation of the formal hybrid shows a superionic behavior with high ionic conductivity up to 10^﹣2 S·m^﹣1, good electrochemical stability and can be used as a solid electrolyte material for Li-ion batteries.

Nacrite, Clay, Hybrid, Amorphous, Solid Electrolyte, Lithium-Ion Battery

Jaafar, N. , Naamen, S. , Rhaiem, H. and Amara, A. (2014) Elaboration of Amorphous-Clay Hybrid: (Al₂Si₂O₇·1/2Li₂O) Designed as a Single Ion Conducting Solid Electrolyte for Li-Ion Batteries. American Journal of Analytical Chemistry, 5, 1261-1272. doi: 10.4236/ajac.2014.517132.