Flexible and freestanding heterostructures based on COF-derived N-doped porous carbon and two-dimensional MXene for all-solid-state lithium-sulfur batteries

Zhang, Yuchan; Yang, Wei; Liu, Yongpeng; Feng, Jinkui

doi:10.1016/j.cej.2021.131040

Cited by 37 publications

(38 citation statements)

References 48 publications

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Section: T Site Dopingmentioning

confidence: 99%

“…Based on the unique tunable layered structure and open contact area of 2D MXenes, MXenes are endowed with excellent electrical conductivity and efficient ion transport properties (Figure 11f). [233,236,237] Making MXenes suitable for various rechargeable batteries (lithium-ion, sodium-ion, potassium-ion, and aluminum-ion batteries, etc.) and energy storage devices such as supercapacitors are widely used.…”

Section: Energy Storage Devicementioning

confidence: 99%

“…[238][239][240][241] In addition, the optimized MXenes material by element doping can improve its electrochemical performance by adjusting the interlayer distance and fabricating active sites inside and outside the material, further broadening the practical application of the material. [233,242] Below we will summarize the applications of element-doped MXenes-based materials in the field of energy storage.…”

Section: Energy Storage Devicementioning

confidence: 99%

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Element‐Doped Mxenes: Mechanism, Synthesis, and Applications

Wang

Sun

et al. 2022

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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.

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Section: T Site Dopingmentioning

confidence: 99%

Section: Energy Storage Devicementioning

confidence: 99%

Section: Energy Storage Devicementioning

confidence: 99%

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Element‐Doped Mxenes: Mechanism, Synthesis, and Applications

Wang

Sun

et al. 2022

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“…The MoS 2 /MXene heterostructure made full use of the advantages of MoS 2 and MXene, showing excellent coulomb efficiency and high capacitance thanks to the layered, hollow, and porous heterostructure. In order to obtain the high energy density and high safety of Li-S batteries, Feng et al [ 106 ] prepared all-solid-state lithium-sulfur batteries based on COF-derived N-doped porous carbon and two-dimensional MXene. Taking advantage of the synergistic effect of porous and electronic conductive CTT, flexible MXene, and solid-state electrolytes, the all-solid-state lithium-sulfur battery showed outstanding energy density, high safety, and excellent cycle stability.…”

Section: Applications Of Mxene-based Heterostructuresmentioning

confidence: 99%

Recent Research Progress in the Structure, Fabrication, and Application of MXene-Based Heterostructures

Yang

Chen

et al. 2022

Nanomaterials

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Two-dimensional (2D) materials have received increasing attention in the scientific research community owing to their unique structure, which has endowed them with unparalleled properties and significant application potential. However, the expansion of the applications of an individual 2D material is often limited by some inherent drawbacks. Therefore, many researchers are now turning their attention to combine different 2D materials, making the so-called 2D heterostructures. Heterostructures can integrate the merits of each component and achieve a complementary performance far beyond a single part. MXene, as an emerging family of 2D nanomaterials, exhibits excellent electrochemical, electronic, optical, and mechanical properties. MXene-based heterostructures have already been demonstrated in applications such as supercapacitors, sensors, batteries, and photocatalysts. Nowadays, increasing research attention is attracted onto MXene-based heterostructures, while there is less effort spent to summarize the current research status. In this paper, the recent research progress of MXene-based heterostructures is reviewed, focusing on the structure, common preparation methods, and applications in supercapacitors, sensors, batteries, and photocatalysts. The main challenges and future prospects of MXene-based heterostructures are also discussed to provide valuable information for the researchers involved in the field.

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“…Polymer electrolyte, for instance, PEO, with high mechanical flexibility and lower interface charge transfer resistance attracts great attention in all-solid-state LiÀ S battery. [13][14][15] Unfortunately, the high crystallinity at room temperature restrains the ionic conductivity. Furthermore, PEO exhibits certain LiPSs solubility especially when operating at medium or high temperature due to the similar ether structure between PEO and ether-based liquid electrolyte.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Cycling Performance of All‐Solid‐State Li‐S Battery Enabled by PVP‐Blended PEO‐Based Double‐Layer Electrolyte

Zou

et al. 2022

Chemistry A European J

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Despite the high specific capacity of LiÀ S battery, shuttle effect of lithium polysulfides (LiPSs) and safety issue pose a great challenge to realize its commercial application. Replacing liquid electrolyte with poly (ethylene oxide) (PEO) -based solid-state electrolyte is considered as a promising method to boost the safety, but the shuttle effect of LiPSs cannot be completely eliminated. In this work, a new kind of double-layer PEO-based polymer electrolyte is designed to restrict the LiPSs. The layer next to cathode consists of PEO and poly(vinylpyrrolidone) (PVP). The other layer consists of PEO. PVP with abundant of amide groups has been proved to have strong affinity to LiPSs. The strong interaction between LiPSs and carbonyl groups in amide is verified by Attenuated Total Reflection-Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy tests. As a result, the assembled LiÀ S battery exhibits a specific capacity of 1100 mAh g À 1 and capacity retention of 347 mAh g À 1 after 200 cycles at 60 °C and 0.05 C, while the capacity retention of the battery without PVP-blended PEO electrolyte remains only 27 % at the same conditions.

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Flexible and freestanding heterostructures based on COF-derived N-doped porous carbon and two-dimensional MXene for all-solid-state lithium-sulfur batteries

Cited by 37 publications

References 48 publications

Element‐Doped Mxenes: Mechanism, Synthesis, and Applications

Element‐Doped Mxenes: Mechanism, Synthesis, and Applications

Recent Research Progress in the Structure, Fabrication, and Application of MXene-Based Heterostructures

Enhanced Cycling Performance of All‐Solid‐State Li‐S Battery Enabled by PVP‐Blended PEO‐Based Double‐Layer Electrolyte

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