Work

Investigation of the Optical, Electric Properties, and Conduction Mechanism of the Cubic Spinel LiMn2O4

Year: 2024

Type: article

Abstract: ABSTRACT LiMn2O4 spinel was prepared via a solid‐state process. Powder XRD results revealed the formation of a single cubic phase structure with the grain sizes of 0.13 μm. The cubic spinel LiMn2O4 crystallized in the three‐dimensional (3D) frameworks of the MnO4 and LiO4 tetrahedra units. The optical study presents a band gap around 2.57 eV. We studied the stability of lithium‐manganese oxides using electrical impedance over a temperature range of 323 to 453 K. The AC electrical conductivity is on the order of 10−3–10−2 Ω·cm−1, confirming the semiconductor character of the material and indicating its importance in optoelectronic and energy storage devices. The variation of the exponent s indicates its significance, demonstrating that the overlapping small polaron tunneling (NSPT) conduction model describes the two phases of this material.

Source: Applied Organometallic Chemistry

DOI: 10.1002/aoc.7911

Authors: K. Karoui, K. Trabelsi, N. Drissi