Abstract
CoFe 2 O 4 &V 2 CT x hybrid material was synthesized as a high volumetric performance anode in lithium-ion batteries by an in-situ hydrothermal method. Multilayered V 2 CT x in the hybrid acts as a superior host for homogenous loading CoFe 2 O 4 nanoparticles due to the opened two-dimensional structure of MXene, favorable electrical conductivity and low Li + diffusion barrier. XRD results confirmed CoFe 2 O 4 &V 2 CT x hybrid had been formed, and SEM images showed the spherical CoFe 2 O 4 nanoparticles were randomly deposited on the surface of accordion-like morphology MXene. Being an anode material, it exhibited a good reversible capacity of 638.6 mAh g −1 with 97.8 % coulombic efficiency after 100 cycles at 1 C. In addition, ex-situ X-ray photoelectron spectra revealed that a redox reaction was involved in the Li + ions extraction/insertion process. Our work provides further insight into the hybrid application of the binary metal & layered MXene hybrids as high-performance anode electrodes for lithium-ion batteries. Scheme 1. The graphical abstract. • CFO&V 2 CT x hybrid material were prepared the by in-situ hydrothermal method. • CFO&V 2 CT x hybrid exhibited a reversible capacity of 638.6 mAh g −1 after 100 cycles at 1 C. • Ex-situ XPS revealed a redox reaction was involved in the Li + ions extraction/insertion process.
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