LiMn1.5Ni0.25Fe0.2M0.05O4 Nanoparticles as a Cathode Material for Rechargeable Li-Ion Batteries

Haitham A. Abdellatif; Mostafa M.M. Sanad; Elsayed M. Elnaggar; Mohamed M. Rashad; Gamal M. El-Kady

doi:10.4028/www.scientific.net/KEM.835.149

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 835LiMn1.5Ni0.25Fe0.2M0.05O4 Nanoparticles as a...

LiMn_1.5Ni_0.25Fe_0.2M_0.05O₄ Nanoparticles as a Cathode Material for Rechargeable Li-Ion Batteries

Abstract:

New series of spinel LiNi_0.25Fe_0.2Mˊ_0.05Mn_1.5O₄ (Mˊ = Cu, Mg or Zn) cathode materials have been purposefully tailored using sol-gel auto-combustion method at low annealing temperature ~ 700°C for 3 h. The XRD analysis showed that all substituted (LNFMO-Mˊ) samples are comported with the main structure of undoped (LNFMO) with crystalline disordered spinel Fd-3m structure. TEM images revealed the octahedron-shape like morphology for the particles and the LNFMO-Zn sample has the widest particle size distribution. EIS spectra evidenced that a typical one semicircle (LNFMO-Mg) was revealed for each cell, suggesting the absence of ionic conductivity contribution. The values of charge transfer resistance (R_ct) were equal to 9.3, 6.7, 6.0 and 4.4 kΩ for LNFMO, LNFMO-Cu, LNFMO-Mg indicating that the Zn-doped sample has the fastest kinetic diffusion rate and lowest activation energy of conduction.

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Key Engineering Materials (Volume 835)

Pages:

149-154

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.835.149

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Online since:

March 2020

Authors:

Haitham A. Abdellatif*, Mostafa M.M. Sanad, Elsayed M. Elnaggar, Mohamed M. Rashad, Gamal M. El-Kady

Keywords:

Cathode, Lithium Ion Batteries, Nano-Metal Oxide, Sol-Gel Auto-Combustion Method

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