Fe₃O₄@Ti₃C₂ MXene hybrids with ultrahigh volumetric capacity as an anode material for lithium-ion batteries

Abstract

Novel Fe3O4@Ti3C2 MXene hybrid exhibits great promise as a high volumetric performance anode material for lithium ion batteries.

MXene‐Based Anodes for Metal‐Ion Batteries

“…A likely factor in this improvement is the high degree of connectivity between composite components (which is also highlighted in the MoS 2 /Ti 3 C 2 @C composite), which improves electron transport and prevents composite breakdown during cycling. The types of enhancement observed in comparing the two CNT/MXene composites are not seen in MXene/iron composites, and so it is fair to propose that the improved performance is due to the increased surface area and connectivity of the frieze carpet‐like morphology, and not simply due to the presence of iron.…”

“…intercalated Fe 3 O 4 nanoparticles into multilayer Ti 3 C 2 T x using 6 hours of ultrasonication, achieving reversible capacities up to 747 mAh g −1 (2038 mAh cm −3 ) after 1000 cycles at 1 C – much greater than those of either Fe 3 O 4 or Ti 3 C 2 T X alone. The value added by compositing these materials was highly dependent on their ratio, with the best performance coming when Fe 3 O 4 and Ti 3 C 2 T X were combined in a 2 : 5 weight ratio . In this and a similar work, a weight ratio of 1 : 1 was only able to help cycling stability and did not significantly improve capacity or rate performance.…”

Electrostatically Assembling 2D Nanosheets of MXene and MOF‐Derivatives into 3D Hollow Frameworks for Enhanced Lithium Storage

“…However, the multiple procedures including surface modification and post‐removal of the template are typically required, making the preparation process complicated, costly, and inefficient. Very recently, SnO 2 quantum dots, nanosized Ag particles, TiO 2 nanorods, MoS 2 nanosheets, and Fe 3 O 4 nanoparticles were hybridized with MXene forming powder‐like materials in order to partially alleviate MXene restacking and simultaneously contribute additional capacity for lithium storage. Nevertheless, the state‐of‐the‐art hybridization approaches, such as hydro/solvothermal and refluxing, inevitably lead to the severe oxidation of MXene, resulting in surface passivation and decreased electrical conductivity.…”

Hybrid Architectures based on 2D MXenes and Low‐Dimensional Inorganic Nanostructures: Methods, Synergies, and Energy‐Related Applications

“…Due to its simplicity and cost‐efficiency, the vacuum filtration was widely used to form films consisting of stacked MXene nanosheets decorated with TMO nanoparticles. For example, the presynthesized Fe 3 O 4 nanoparticles and Ti 3 C 2 T x nanosheets were mixed in deionized water under sonication, and filtered to obtain an Fe 3 O 4 @Ti 3 C 2 T x hybrid film . In this hybrid film, the Ti 3 C 2 T x nanosheets were stacked to form a layered architecture, with the Fe 3 O 4 nanoparticles located not only between the layers but also on the surfaces of the nanosheets.…”

“…In this sense, Ti 3 C 2 T x was advantageous due to its high density, high electronic conductivity, and an open 2D structure, while Fe 3 O 4 had the merit of high theoretical capacity. In a previous research, Wang et al prepared an Fe 3 O 4 @Ti 3 C 2 T x hybrid film by vacuum filtration . With a layered architecture, Ti 3 C 2 T x could accommodate the volume expansion suffered by the Fe 3 O 4 nanoparticles, and provide channels for the transport of Li‐ions during charging/discharging.…”