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  • Title: 3D Porous Ti3C2 MXene/NiCo-MOF Composites for Enhanced Lithium Storage.
    Author: Liu Y, He Y, Vargun E, Plachy T, Saha P, Cheng Q.
    Journal: Nanomaterials (Basel); 2020 Apr 07; 10(4):. PubMed ID: 32272560.
    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.
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