TY  - JOUR
AU  - Taoussi, S.
AU  - Hoummada, K.
AU  - Lahmar, A.
AU  - Naji, M.
AU  - Bih, H.
AU  - Alami, J.
AU  - Manoun, B.
AU  - El bouari, A.
AU  - frielinghaus, H.
AU  - Lazor, P.
AU  - Graça, M. P. F.
AU  - Bih, L.
TI  - Glass-ceramics and molybdenum doping synergistic approach for Nasicon-type solid-state electrolytes
JO  - Ceramics international / Ci news
VL  - 50
IS  - 23
SN  - 0272-8842
CY  - Faenza
PB  - Ceramurgia
M1  - FZJ-2024-05745
SP  - 49134-49149
PY  - 2024
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001356954500001
DO  - DOI:10.1016/j.ceramint.2024.09.255
UR  - https://juser.fz-juelich.de/record/1031618
ER  -