%0 Journal Article
%A Taoussi, S.
%A Hoummada, K.
%A Lahmar, A.
%A Naji, M.
%A Bih, H.
%A Alami, J.
%A Manoun, B.
%A El bouari, A.
%A frielinghaus, H.
%A Lazor, P.
%A Graça, M. P. F.
%A Bih, L.
%T Glass-ceramics and molybdenum doping synergistic approach for Nasicon-type solid-state electrolytes
%J Ceramics international / Ci news
%V 50
%N 23
%@ 0272-8842
%C Faenza
%I Ceramurgia
%M FZJ-2024-05745
%P 49134-49149
%D 2024
%X Advancing energy density, enabling lithium metal anodes, and ensuring unparalleled safety and operational reliability in lithium batteries hinge on advancing inorganic solid-state electrolytes. To overcome current im-pediments, we present an innovative approach that integrates glass-ceramics with a pioneering new Nasicon strategy involving molybdenum doping. In the conducted study, a series of 14Li2O-9Al2O3-38TiO2-(39-x)P2O5- xMoO3 glasses, denoted as LATPMox, along with their corresponding glass-ceramics (LATPMox-GC), have exhibited a promising characteristic as solid electrolytes. X-ray diffraction (XRD) analysis confirms the formation of the novel Mo-doped Nasicon phases in the glass-ceramics, as validated by Rietveld refinement. Examination of the crystallization kinetic behavior of the glasses reveals a three-dimensional nucleation process with spherical particle growth, featuring an activation energy of 165 kJ mol-1. Transmission Electron Microscopy TEM char-acterization aligns crystallization behavior with crystallite and distribution within the glass matrix, resulting in a compact and dense microstructure. The structural properties of the resultant phases are examined through FT-IR, Raman spectroscopy, and TEM-SEAD analysis. Vickers indentation tests were employed to assess the microscopic fracture toughness, and both the glass and glass-ceramics materials demonstrated favorable mechanical per-formance. Optical characterization using UV–visible absorption highlights the reduction of Mo6+ to Mo5+, likely occupying tetrahedral sites within the crystalline lattice. Impedance spectroscopy measurement showcases the effective promotion of ionic conductivity following Mo doping, reaching a total conductivity value of 5.50 × 10-5 Ω-1 cm-1 along with a high lithium transference number of 0.99 at room temperature for LATPMo2.6-GC glass-ceramic. This value is larger than that of many other glass-ceramics as well as that of the well-known lithium phosphorous oxy-nitride LiPON solid electrolyte whose ionic conductivity at RT is around 2 × 10-6 Ω-1 cm-1.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:001356954500001
%R 10.1016/j.ceramint.2024.09.255
%U https://juser.fz-juelich.de/record/1031618