Abstract:
This present work explores the development and electrochemical assessment of a ternary
Fe3O4/NIO@HCSs: composite. This composite is synthesized through hydrothermal and
thermal treatments to optimize the interface and microstructure of the materials. The unique
combination of iron oxides (Fe3O4) and nickel oxide (NiO) with hollow carbon spheres
(HCSs) aims to exploit the synergistic effects between these components. The HCSs
Fe3O4/NiO composite achieves a remarkable initial discharge capacity of 1623 mAh/g.
However, its most notable feature is its stability over prolonged cycling after 1000 cycles
at a rate of 0.3C, the composite maintains a robust capacity of 520 mAh/g. In contrast, the
pristine Fe3O4-NiO anode shows a substantial decline, with its capacity falling below 300
mAh/g at 0.3C. Additionally, impedance measurements reveal that Fe3O4/NiO@HCSs
exhibit significantly lower impedance compared to pristine NiO, Fe3O4 and composite.
This reduction in impedance is indicative of enhanced electronic conductivity and
improved lithium-ion transport within the composite. The findings highlight the superior
performance of Fe3O4/NiO@HCSs.
