3D Porous Ti3C2 MXene/NiCo-MOF Composites for Enhanced Lithium Storage

Abstract

To improve Li storage capacity and the structural stability of Ti3C2 MXene-based electrode materials for lithium-ion batteries (LIBs), a facile strategy is developed to construct three-dimensional (3D) hierarchical porous Ti3C2/bimetal-organic framework (NiCo-MOF) nanoarchitectures as anodes for high-performance LIBs. 2D Ti3C2 nanosheets are coupled with NiCo-MOF nanoflakes induced by hydrogen bonds to form 3D Ti3C2/NiCo-MOF composite films through vacuum-assisted filtration technology. The morphology and electrochemical properties of Ti3C2/NiCo-MOF are influenced by the mass ratio of MOF to Ti3C2. Owing to the interconnected porous structures with a high specific surface area, rapid charge transfer process, and Li+ diffusion rate, the Ti3C2/NiCo-MOF-0.4 electrode delivers a high reversible capacity of 402 mAh g−1 at 0.1 A g−1 after 300 cycles; excellent rate performance (256 mAh g−1 at 1 A g−1); and long-term stability with a capacity retention of 85.7% even after 400 cycles at a high current density, much higher than pristine Ti3C2 MXene. The results highlight that Ti3C2/NiCo-MOF have great potential in the development of high-performance energy storage devices.

A composite electrode of 2D‐Ti3C2 (MXene) and polyemeraldine salt of polyaniline for supercapacitor with high areal capacitance

“…Raman analysis of Ti 3 C 2 /PANI‐ES 1:10 (Figure 3A) reveals four main peaks at approximately 149 cm −1[ 44 ] 413 cm −1 , [ 44 ] 575 cm −1[ 45 ] and 614 cm −1 , [ 44 ] which can be assigned to Ti 3 C 2 . In addition, the peaks at approximately 1170 cm −1 , [ 46 ] 1338 cm −1 , [ 46 ] 1492 cm −1 , [ 47 ] and 1584 cm −1[ 47 ] are ascribed to the Raman vibrations of Ti 3 C 2 /PANI‐ES 1:10.…”

“…[42] Similarly, the diffraction pattern of PANI-ES shows the distinct peaks of (011), (020), (200) at 17.25 , 23.89 , and 29.53 , respectively, in agreement with the standard XRD results. [43] Successful formation of Ti 3A) reveals four main peaks at approximately 149 cm À1 [44] 413 cm À1 , [44] 575 cm À1 [45] and 614 cm À1 , [44] which can be assigned to Ti 3 C 2 . In addition, the peaks at approximately 1170 cm À1 , [46] 1338 cm À1 , [46] 1492 cm À1 , [47] and 1584 cm À1 [47] are ascribed to the Raman vibrations of 3C), which is a characteristic appearance of the same as evidenced from previous reports.…”

Emerging MXene@Metal–Organic Framework Hybrids: Design Strategies toward Versatile Applications

“…The capacity retention was much superior to the pristine Ti 3 C 2 MXene, demonstrating the potential of MXene and MOF integrated electrode materials for advanced energy storage devices. 177 Furthermore, a facile and controllable method has been recently reported in integrating 2D negatively charged MXene and positively charged ZIF-67 polyhedrons derived layered double hydroxides into 3D hollow frameworks by the means of electrostatic self-assembly. Upon subjecting to thermal annealing, transition-metal oxides (TMOs)@MXene (CoO/ Co 2 Mo 3 O 8 @MXene) hollow frameworks were employed as anode materials for Li-ion batteries.…”

Heterostructured Mo‐Doped CoP on MXene Supports Enhanced the Alkaline Hydrogen Evolution Activity

“…In recent years, a series of MOF derivative/MXene hybrids were widely reported for functional electrocatalysts. [43][44][45] Furthermore, the 3D-structural MOFs can hinder restacking of MXenes, [46][47] while the poor conductivity of MOF derivatives can be compensated by the addition of MXenes. [48] Nevertheless, MXene as a substrate material loaded with MOF-derived bi-metallic phosphide has rarely been reported, especially bi-metallic phosphide-MXene hybrids as HER catalysts.…”