Enhanced lithium storage capacitance of layered CoFe2O4&V2CTx hybrid anode material synthesized by in-situ hydrothermal method

CoFe2O4&V2CTx hybrid material was synthesized as a high volumetric performance anode in lithium-ion batteries by an in-situ hydrothermal method. Multilayered V2CTx in the hybrid acts as a superior host for homogenous loading CoFe2O4 nanoparticles due to the opened two-dimensional structure of MXene, favorable electrical conductivity and low Li+ diffusion barrier. XRD results confirmed CoFe2O4&V2CTx hybrid had been formed, and SEM images showed the spherical CoFe2O4 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. (c) 2022 Elsevier B.V. All rights reserved.