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001041723 1001_ $$0P:(DE-HGF)0$$aTaoussi, S.$$b0$$eCorresponding author
001041723 245__ $$aNASICON As-doped and glass additive dual strategy for novel NASICON-glass composite with superior ionic conductivity
001041723 260__ $$aAmsterdam [u.a.]$$bElsevier$$c2025
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001041723 520__ $$aDue to their desirable properties, NASICON-type LATP materials are considered strong candidates for use as solid-state electrolytes in lithium batteries. However, their ionic conductivity, essential for optimal battery performance, remains lower than liquid electrolytes. This study highlights the effectiveness of a dual-strategy approach to improve LATP NASICON materials' ionic conductivity. By substituting titanium with arsenic, we developed a high-ion-conducting phase, Li1.5Al0.3As0.2Ti1.5(PO4)3, which showed significant advancements, achieving a high relative density of 89% and an average grain size of 51 nm, which contributes to its improved performance. These modifications led to a significant boost in the ionic conductivity of the arsenic-doped LATP phase, which rose from 5.34 × 10-5 S.cm-1 for LATP to 8.57 × 10-4 S.cm-1 for the Li1.5Al0.3As0.2Ti1.5(PO4)3 phase at room temperature with an activation energy of 0.30 eV and a transference number close to 1. To address remaining porosity and grain boundary resistance, we developed a novel glass-ceramic composition by incorporating a high-ion-conducting glass additive (45Li2O-10Li2WO4-45P2O5) into the new elaborated Li1.5Al0.3As0.2Ti1.5(PO4)3 matrix. The addition of 3 wt.% glass content notably enhanced the density and compactness of the material, increasing its ionic conductivity to 4.6 × 10-3 S. cm-1 at 25 °C with an activation energy of 0.25 eV, representing the highest ionic conductivity reported for NASICON and NASICON-composite materials. This work provides a cost-effective and efficient method for producing novel NASICON ceramics and glass-ceramic composites with superior ionic conductivity, setting a new benchmark for NASICON-composite materials and advancing the development of high-performance solid-state electrolytes for lithium batteries.
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001041723 7001_ $$0P:(DE-HGF)0$$aOuaha, A.$$b1
001041723 7001_ $$0P:(DE-HGF)0$$aNaji, M.$$b2
001041723 7001_ $$0P:(DE-HGF)0$$aHoummada, K.$$b3
001041723 7001_ $$0P:(DE-HGF)0$$aLahmar, A.$$b4
001041723 7001_ $$0P:(DE-HGF)0$$aManoun, B.$$b5
001041723 7001_ $$0P:(DE-HGF)0$$aEl Bouari, A.$$b6
001041723 7001_ $$0P:(DE-Juel1)130646$$aFrielinghaus, H.$$b7$$ufzj
001041723 7001_ $$0P:(DE-Juel1)208503$$aZhang, Y.$$b8$$ufzj
001041723 7001_ $$0P:(DE-HGF)0$$aBih, L.$$b9
001041723 773__ $$0PERI:(DE-600)2826805-2$$a10.1016/j.est.2025.116933$$gVol. 124, p. 116933 -$$p116933$$tJournal of energy storage$$v124$$x2352-152X$$y2025
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