Regulating Fe–O bond in Ti3C2Tx MXene anode for high-capacity Li-ion batteries

Zhao, Nana; Yang, Yijun; Ding, Yi; Xiao, Yu; Wang, Ke; Cui, Wenchao; Wang, Xi

doi:10.1016/j.cej.2021.130018

Cited by 30 publications

(24 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The formed FeO bond is contributed to Li + adsorption subsequently, which is applied to anode for high-capacity Li-ion batteries (Figure 6g). [58] In Selcen et al works, the S-doped Ti 3 AlC 2 as a new molecularly imprinted quartz crystal microbalance (QCM) sensor applied for chlorpyrifos detection is synthesized under 1700 °C. [88] Compared with post-treatment, direct synthesis methods adopt the higher sintering temperature.…”

Section: Thermal Sintering Treatmentmentioning

confidence: 99%

“…It is worth noting that Zhao et al formed Fe-Ti 3 C 2 T x nanosheets by doping with Fe element, and the electron transfer on FeO bonds induced unsaturated O coordination based on the functional substitution doping method. [58] Combined with density functional theory (DFT) calculations, it shows that this method can effectively improve the adsorption of Li ions on its surface during charge and discharge, and significantly improve the cycle stability of the material (418.8 mAh g -1 at 200 mA g -1 under -10 °C). [58] In Li-S batteries, MXenes doping also shows promising performance.…”

Section: Rechargeable Batteriesmentioning

confidence: 99%

“…[58] Combined with density functional theory (DFT) calculations, it shows that this method can effectively improve the adsorption of Li ions on its surface during charge and discharge, and significantly improve the cycle stability of the material (418.8 mAh g -1 at 200 mA g -1 under -10 °C). [58] In Li-S batteries, MXenes doping also shows promising performance. Bao et al synthesized wrinkled N-doped MXene nanosheets with strong physicochemical coadsorption of polysulfides by a one-step method, inducing a well-defined porous structure, high surface area, and large pore volume.…”

Section: Rechargeable Batteriesmentioning

confidence: 99%

“…[46,55,56] The functional substitution is the substitution of specific chemical bonds or functional groups on the surface of the material, and the doping substitution method that endows MXenes with specific surface functions, enhancing its electrochemical performance effectively. [57,58] Surface adsorption occurs at the active sites in the MXenes 2D network structure. Based on electrostatic interaction, the relevant physical and chemical properties can be optimized by adjusting the surface termination of MXenes.…”

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 4 more Smart Citations

Element‐Doped Mxenes: Mechanism, Synthesis, and Applications

Wang

Sun

et al. 2022

Small

View full text Add to dashboard Cite

Heteroatom doping can endow MXenes with various new or improved electromagnetic, physicochemical, optical, and structural properties. This greatly extends the arsenal of MXenes materials and their potential for a spectrum of applications. This article comprehensively and critically discusses the syntheses, properties, and emerging applications of the growing family of heteroatom‐doped MXenes materials. First, the doping strategies, synthesis methods, and theoretical simulations of high‐performance MXenes materials are summarized. In order to achieve high‐performance MXenes materials, the mechanism of atomic element doping from three aspects of lattice optimization, functional substitution, and interface modification is analyzed and summarized, aiming to provide clues for developing new and controllable synthetic routes. The mechanisms underlying their advantageous uses for energy storage, catalysis, sensors, environmental purification and biomedicine are highlighted. Finally, future opportunities and challenges for the study and application of multifunctional high‐performance MXenes are presented. This work could open up new prospects for the development of high‐performance MXenes.

show abstract

Section: Thermal Sintering Treatmentmentioning

confidence: 99%

Section: Rechargeable Batteriesmentioning

confidence: 99%

Section: Rechargeable Batteriesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Element‐Doped Mxenes: Mechanism, Synthesis, and Applications

Wang

Sun

et al. 2022

Small

View full text Add to dashboard Cite

show abstract

Heterostructured Nanoglue Design for Durable Lithium‐Ion Battery Anodes

Ruan,

Xu,

Fang

et al. 2024

Adv Funct Materials

View full text Add to dashboard Cite

Hybrid and heterostructures exhibit intriguing and significant properties that can endow unique properties to high‐performance batteries. However, their applications are often hampered by limited structural stability due to inevitable material agglomeration and structural collapse during repeated electrochemical cycles. Here, an efficient strategy to utilize an intermediate nanoglue to bond the substrate and heterojunction phase and increase the overall structural stability is reported. After screening the possible Fe‐based oxides, tunnel‐type FeOOH satisfies the principle of relatively high affinity to both Ti3C2Ox support and Fe3O4 phase, thus strengthening heterostructure stability. Furthermore, functional FeOOH quantum dots as nanoglue and graft them onto high‐surface‐area Ti3C2Ox support is experimentally utilized, then load high‐capacity Fe3O4 nanoparticles onto the nanoglue. The designed heterostructured nanoglue not only yields abundant heterojunctions with continuous channels for ion/electron transfer but maintains excellent electrochemical reversibility. Serving as anode for lithium storage, Ti3C2Ox/FeOOH/Fe3O4 hybrid enables a high discharging capacity of 790.4 mAh g−1 at 1.0 A g−1 after 500 cycles and superior cycling stability. The design principle is general and can be expanded to other hybrid materials.

show abstract

Anomalous Electrochemical Aging Strengthening Behavior of MXene Electrodes for Synergistic Anion‐Cation Storage in Dual‐Ion Batteries

Jia,

Yang,

Zheng

et al. 2024

Adv Funct Materials

View full text Add to dashboard Cite

Electrochemical aging of electrode materials usually leads to capacity decay and voltage drop in conventional rocking‐chair batteries. Here we report an anomalous electrochemical aging strengthening behavior of Ti3C2Tx MXene electrode in a dual‐ion battery, whose capacity/power grows under cycling and eventually reaches an optimal state once the co‐storage of PF6− anion and Li+ cation is activated by a wide electrochemical aging window. Experimental and theoretical results reveal that there is anion‐cation synergy between PF6− and Li+ during co‐storage process in Ti3C2Tx electrodes, where small Li+ intercalation expands interlayer spacing of Ti3C2Tx at low discharge voltages, and the residual Li+ during charging can act as an anchor center to promote storage of large PF6− at high charging voltages; meanwhile, the residual PF6− during discharge in turn provides additional active sites to coordinate with Li+, raising Li+ intercalation voltage and capacity. Thereafter, Ti3C2Tx electrode offers a high capacity of 310 mAh/g, robust cycling stability over 800 cycles, and rate performance up to 1000 mA/g, which is among the best reported results of anion‐cation co‐storage. This counter‐intuitive discovery, resembling aging‐strengthening phenomenon in metallurgy, deepens our understanding of unconventional battery chemistry and provides a new avenue for design of high‐performance electrode materials.

show abstract

Regulating Fe–O bond in Ti3C2Tx MXene anode for high-capacity Li-ion batteries

Cited by 30 publications

References 45 publications

Element‐Doped Mxenes: Mechanism, Synthesis, and Applications

Element‐Doped Mxenes: Mechanism, Synthesis, and Applications

Heterostructured Nanoglue Design for Durable Lithium‐Ion Battery Anodes

Anomalous Electrochemical Aging Strengthening Behavior of MXene Electrodes for Synergistic Anion‐Cation Storage in Dual‐Ion Batteries

Contact Info

Product

Resources

About