Elaboration of Amorphous-Clay Hybrid: (Al₂Si₂O₇·1/2Li₂O) Designed as a Single Ion Conducting Solid Electrolyte for Li-Ion Batteries

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.

DOI: 10.4236/ajac.2014.517132                

Abstract

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.

Keywords

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

Conflicts of Interest

The authors declare no conflicts of interest.

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