Quenching-induced interfacial amorphous layer containing atomic Ag on Fe2O3 nanosphere for high-performance lithium-ion batteries and mechanism

Interface Engineering Construction of a Ag-Modified Crystalline CoFe@Amorphous Fe2O3 Composite for Superior Oxygen Evolution Electrocatalysis

“…The Ag 3d spectra were deconvoluted into two peaks at 368.0 eV (Ag 3d 5/2 ) and 374.0 eV (Ag 3d 3/2 ) of Ag 0 , with a difference of 6 eV between the two peaks (Figures 4a and S2). 41 The Co 2p spectra of ACFO/NC showed peaks at 778.4, 780.2, and 782.3 eV attributed to the Co 2p 3/2 of Co 0 , Co 3+ , and Co 2+ , respectively. The peaks at 794.7, 795.8, and 797.5 eV are attributed to the Co 2p 1/2 of Co 0 , Co 3+ , and Co 2+ , respectively.…”

Facile preparation of high-performance Mn and Mg co-doped Fe2O3 nanorod for lithium-ion battery anode from refined green alum slag-a “turn waste into treasure” strategy

“…Additionally, pure-phase Fe 2 O 3 falls far short of its theoretical specific capacity during application. Strategies have been proposed to improve the activity of Fe 2 O 3 in LIBs in the past decades, such as element-doping, 6 designing metal oxide heterojunction, 7 compositing with carbon/graphene oxides/biomass-derived nanostructured carbons, 8,9 quenchinginduced, 10 porous TiO 2 /Fe 2 O 3 nanoplate composites, 11 phosphate ions functionalized Fe 2 O 3 , 12 defective engineering 13 and modulating the nanostructures 14 to improve their kinetic and thermodynamic limits. Partially substituting Fe with other cations including Al, Mg, Mn, Zn, Co, and Ni has been widely explored by researchers [15][16][17][18] to enhance the electrochemical performance of Fe 2 O 3 and bimetal cations; doping generally generates better performance compared to the the single-one component.…”

Carbon Layer and CoO Nanosheet Dual-Encapsulated SiOx Particles for Ultra-High Specific Capacity Lithium-Ion Batteries

“…In addition, transition metal oxides serve as a promising anode material due to their high theoretical capacity, good safety, environmental friendliness, and abundant reserves. − The transition metal oxides include Fe 2 O 3 , , Fe 3 O 4 , Co 3 O 4 , CoO, , NiO, , MnO, , Mn 3 O 4 . , Among them, CoO has been widely noticed for its convenient preparation and higher theoretical capacity (716 mAh g –1 ). − Saikia et al confined CoO nanoparticles in mesoporous carbon to prepare composites and achieved an excellent lithium storage performance. Shi et al combined CoO with N-doped carbon materials to obtain sandwich-like composites, which achieved 1031.2 mAh g –1 after 500 cycles at 0.5 A g –1 .…”

“…In addition, transition metal oxides serve as a promising anode material due to their high theoretical capacity, good safety, environmental friendliness, and abundant reserves. 16−18 The transition metal oxides include Fe 2 O 3 , 19,20 Fe 3 O 4 , 21 Co 3 O 4 , 22 CoO, 23,24 NiO, 25,26 MnO, 27,28 preparation and higher theoretical capacity (716 mAh g −1 ). 31−33 Saikia et al 34 confined CoO nanoparticles in mesoporous carbon to prepare composites and achieved an excellent lithium storage performance.…”