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


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.

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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.

Conflicts of Interest

The authors declare no conflicts of interest.


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