Highly Stable Fe₃O₄/C Composite: A Candidate Material for All Solid-State Lithium-Ion Batteries

Abstract

Fe3O4 nanoparticles synthesized by a base catalyzed method are tested in an All-Solid-State (ASLB) battery using a sulfide electrolyte. The pristine nanoparticles were morphologically characterized showing an average size of 12 nm. The evaluation of the electrochemical properties shows high specific capacity values of 506 mAhg−1 after 350 cycles at a specific current of 250 mAg−1, with very high stability and coulombic efficiency.

Synthesis of a High-Capacity α-Fe2O3@C Conversion Anode and a High-Voltage LiNi0.5Mn1.5O4 Spinel Cathode and Their Combination in a Li-Ion Battery

“…7 , 8 Transition-metal oxides react in the cell by an electrochemical conversion pathway mainly occurring below 1.5 V versus Li + /Li and involving a multiple exchange of electrons, which ensures a higher capacity than that of graphite. 9 − 14 However, this intriguing class of materials intrinsically suffers from poor electrical conductivity and a large volume change throughout the electrochemical process, which causes the voltage hysteresis and rapid cell decay upon cycling. 15 A suitable strategy to mitigate the various issues hindering the efficient use of these alternative anodes is represented by engineering nanostructured oxides with an increased active surface.…”

“…Electric vehicles (EVs), hybrid-EVs (HEVs), and plug-in HEVs are predominantly powered by the most common version of the lithium-ion battery, that is, the one combining a graphite anode with a layered transition-metal-oxide cathode and employed in common portable electronics. − This system is based on the electrochemical (de)­insertion of lithium into and from the electrode materials and can typically store ca. 250 W h kg –1 for a high number of charge/discharge cycles. , Graphite uptakes Li + delivering a capacity of 372 mA h g –1 , which is limited by the amount of alkali-metal ions stored within the carbon layers, reaching a maximum of 0.16 Li-equivalents per mole of C, that is, according to the LiC 6 chemical formula. , Transition-metal oxides react in the cell by an electrochemical conversion pathway mainly occurring below 1.5 V versus Li + /Li and involving a multiple exchange of electrons, which ensures a higher capacity than that of graphite. − However, this intriguing class of materials intrinsically suffers from poor electrical conductivity and a large volume change throughout the electrochemical process, which causes the voltage hysteresis and rapid cell decay upon cycling . A suitable strategy to mitigate the various issues hindering the efficient use of these alternative anodes is represented by engineering nanostructured oxides with an increased active surface .…”

Carbon Double Coated Fe3O4@C@C Nanoparticles: Morphology Features, Magnetic Properties, Dye Adsorption

“…It provides exceptional chemical stability and protects the magnetic core from oxidation, allowing further functionalization of the carbon surface. Core-shell nanostructures consisting of the iron oxide magnetic core coated with non-magnetic carbon demonstrate unique properties and technological capabilities [ 1 , 2 , 3 , 4 , 5 , 6 ].…”

“…Several authors considered Fe 3 O 4 @C nanostructures as the basis for anode materials of lithium-ion batteries [ 2 , 3 , 4 ]. The hierarchical Fe 3 O 4 @C microspheres obtained by the self-assembling of microalgae were shown in [ 2 ] to be excellent as anode materials for lithium-ion batteries.…”

“…The hierarchical Fe 3 O 4 @C microspheres obtained by the self-assembling of microalgae were shown in [ 2 ] to be excellent as anode materials for lithium-ion batteries. Fe 3 O 4 nanoparticles mechanically mixed with carbon fibers were used in a solid-state battery with a sulfide electrolyte; they were characterized by high capacitance along with very good recovery [ 3 ]. Recently, the authors of Ref.…”