Zn substitution NiFe2O4 nanoparticles with enhanced conductivity as high-performances electrodes for lithium ion batteries

Self‐Assembled Porous NiFe2O4 Floral Microspheres Inlaid on Ultrathin Flake Graphite as Anode Materials for Lithium Ion Batteries

“…Transition metal oxides, including binary and ternary metal oxides, have been widely studied as LIBs electrode materials . Generally ferrite oxides with special spinel structure have recently come into sharp focus by virtue of its essential attributes, such as abundant nature storage, low toxicity and low cost ,.…”

Spinel ferrite (AFe2O4)-based heterostructured designs for lithium-ion battery, environmental monitoring, and biomedical applications

“…To further understand the reason and purpose for choosing a doping route within SFN lattice structures, we know that the electrical and electrochemical properties, namely electronic conductivity, cycling performance, and rate capability, remarkably depend on the interaction and distribution of A 2+ and Fe 3+ spinel cation sites throughout the spinel crystal structure. [176][177][178] With the exible ability of heteroatoms to replace and/or occupy the A 2+ cation positions, critical changes can be created in the lattice parameters and crystallite sizes because of differences in the concentrations and radii of dopant cations, leading to the formation of defects and synergistic effects, delaying capacity loss. [179][180][181] A proper doping process provides many varied advantages for an electrode; among these is a signicant increase in the number of transport channels and active sites within the unique porous nanosized structure arising from the stronger dopant-atom-oxide bonds with respect to the Fe-O ones, contributing to the promotion of lithium-ion diffusion and storage.…”

Effect of pH Value on Synthesis and Properties of Zinc Cobalt Ferrite Nano Powders Prepared via Co-Precipitation Method

“…Although zinc ions have a large radius (0.74 ) and naturally prefer to be in a larger space (B site), they sit in tetrahedral position (A site) due to great power of Zn-O bonds and crystal field stabilization energy (CFSE) of zinc ions in this space [20,21]. Thus, by doping zinc into the cobalt ferrite structure, the Zn 2+ ions are in the tetrahedron position [21]. This placement of ions means the force applied to the 3 valent iron ions in the tetrahedral space to move to the octahedral position.…”