Crumpled nitrogen-doped aerogels derived from MXene and pyrrole-formaldehyde as modified separators for stable lithium-sulfur batteries

Lin, Liangwen; Qi, Man; Bai, Zhitao; Yan, Shuxin; Sui, Zhuyin; Han, Bao‐Hang; Liu, Yuwen

doi:10.1016/j.apsusc.2021.149717

Cited by 38 publications

(17 citation statements)

References 54 publications

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“… 82 It is worth noting that the separator effectively blocked the shuttle of polysulfides, thereby inhibiting the corrosion of the lithium anode by side reaction products, and effectively improving the cycle stability of the battery. Song et al observed that the cell anode surface of the newly synthesized separator is smoother 89‐91 . The separator is achieved through coating Ti 3 C 2 T x MXene on commercial polypropylene membranes.…”

Section: Doping Mechanism Of Mxene/sulfur Compositementioning

confidence: 99%

“…Song et al observed that the cell anode surface of the newly synthesized separator is smoother. [89][90][91] The separator is achieved through coating Ti 3 C 2 T x MXene on commercial polypropylene membranes. Poor polarization and long cycle performance provide an extremely low capacity attenuation of 0.062% at 0.5 C, almost entirely inhibiting the shuttle effect, providing a strong basis for the stability of the battery.…”

Section: Doping Mechanism Of Mxene/sulfur Compositementioning

confidence: 99%

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Atomic surface modification strategy ofMXenematerials forhigh‐performancemetal sulfur batteries

Wang

Zhang

et al. 2022

Intl J of Energy Research

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Improved MXenes based on heteroatom doping endow them with various new or optimized physicochemical, optical and structural properties. This greatly expands the library of MXenes materials and their potential for a range of applications. In this article, we comprehensively and critically discuss the synthesis and performance of the growing heteroatom doping and its family of composite MXenes materials in metal-sulfur batteries. We first summarize the heteroatom doping and its composite strategy of high-performance MXenes and analyze and summarize the mechanism of atomic element doping from three aspects: structure optimization, functional substitution and interface modification, aiming to provide clues for the development of new controllable synthetic routes. Emerging synthesis and optimization mechanisms related to metal-sulfur batteries are highlighted. Finally, we propose future opportunities and challenges for multifunctional high-performance MXenes research and metal-sulfur batteries. This work could open up new prospects for the development of high-performance MXenes in metal-sulfur batteries.

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Section: Doping Mechanism Of Mxene/sulfur Compositementioning

confidence: 99%

Section: Doping Mechanism Of Mxene/sulfur Compositementioning

confidence: 99%

Atomic surface modification strategy ofMXenematerials forhigh‐performancemetal sulfur batteries

Wang

Zhang

et al. 2022

Intl J of Energy Research

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“…[9][10][11] First, the non-conductive nature of elemental sulfur and discharge products will hinder the electron transfer and lead to poor active materials utilization. 12,13 Second, the large volume expansion of elemental sulfur particles will cause structural collapse and poor cycling stability of the lithium-sulfur batteries. 14,15 Finally, the shuttle effect of the discharge product of lithium polysulfide leads to poor electrochemical performance during the discharging and charging process.…”

Section: Introductionmentioning

confidence: 99%

“…So far, there have been some issues that inhibit the wide application of lithium–sulfur batteries 9‐11 . First, the non‐conductive nature of elemental sulfur and discharge products will hinder the electron transfer and lead to poor active materials utilization 12,13 . Second, the large volume expansion of elemental sulfur particles will cause structural collapse and poor cycling stability of the lithium–sulfur batteries 14,15 .…”

Section: Introductionmentioning

confidence: 99%

In situ load of sulfur species on hollow carbon spheres as advanced electrode for superior electrochemical activity

Yan-tao

2022

J of Chemical Tech & Biotech

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BACKGROUND Hollow carbon nanospheres (HCNS) were successfully prepared using silica as a template. After that, elemental sulfur particles were grown in situ on the surface of the hollow carbon nanospheres by a solution method to prepare HCNS/S composites. RESULTS The morphology and crystal structure of the samples were characterized by scanning electron microscopy and X‐ray diffraction. The electrochemical performance of the samples was tested by constant charge and discharge, cyclic voltammetry and electrochemical impedance spectra using coin 2032 half batteries. The electrochemical tests indicated that the as‐prepared HCNS/S composites exhibited an initial specific capacity of 1162 mA h g−1 at the current density of 0.2 C. CONCLUSION The electrochemical impedance spectra showed that the as‐prepared HCNS/S composites displayed superior electronic conductivity during electrochemical cycles. The employment of HCNS/S composites is beneficial for the improvement of electrochemical performance of lithium–sulfur batteries. © 2022 Society of Chemical Industry (SCI).

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“…Special properties due to special structures, MXene‐based composites, have strong interaction with sulfur species. [ 8 ] MXene‐based composites also have been widely applied in separator modification, [ 9 ] sulfur host construction, [ 10 ] assembling barrier layer, [ 11 ] etc. have achieved good results.…”

Section: Introductionmentioning

confidence: 99%

3D Alk‐MXene@Fe₃O₄ as Cathode Additive for Rechargeable Lithium−Sulfur Batteries

Zhang

Wang

Han

et al. 2021

Adv Energy and Sustain Res

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Lithium−sulfur battery (LSB) is one of the most promising next‐generation batteries due to its high energy density and low cost. However, the serious shuttle effect, large volume change, and poor conductivity have hindered their commercialization. Herein, alk‐MXene@Fe3O4 composite is synthesized through ultrasonic treatment of alkalized MXene and Fe3O4 and it is used as additive in the sulfur cathode. The results indicate that Alk‐MXene@Fe3O4 additive can anchor polysulfides by the strong polar adsorption and accelerate the conversion of the LiPSs. The cathode with Alk‐MXene@Fe3O4 retains a substantially stable discharge capacity of 681.7 mAh g−1 after 120 cycles at a rate of 0.2 C, which is equivalent to 58.6% of the initial discharge capacity (1163 mAh g−1), and the corresponding capacity decay per cycle is 0.35%. At a rate of 1 C, it can still retain 595 mAh g−1 after 200 cycles. It has important reference value for the development of cathode additives to improve the performance of active sulfur.

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Crumpled nitrogen-doped aerogels derived from MXene and pyrrole-formaldehyde as modified separators for stable lithium-sulfur batteries

Cited by 38 publications

References 54 publications

Atomic surface modification strategy ofMXenematerials forhigh‐performancemetal sulfur batteries

Atomic surface modification strategy ofMXenematerials forhigh‐performancemetal sulfur batteries

In situ load of sulfur species on hollow carbon spheres as advanced electrode for superior electrochemical activity

3D Alk‐MXene@Fe₃O₄ as Cathode Additive for Rechargeable Lithium−Sulfur Batteries

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Crumpled nitrogen-doped aerogels derived from MXene and pyrrole-formaldehyde as modified separators for stable lithium-sulfur batteries

Cited by 38 publications

References 54 publications

Atomic surface modification strategy ofMXenematerials forhigh‐performancemetal sulfur batteries

Atomic surface modification strategy ofMXenematerials forhigh‐performancemetal sulfur batteries

In situ load of sulfur species on hollow carbon spheres as advanced electrode for superior electrochemical activity

3D Alk‐MXene@Fe3O4 as Cathode Additive for Rechargeable Lithium−Sulfur Batteries

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3D Alk‐MXene@Fe₃O₄ as Cathode Additive for Rechargeable Lithium−Sulfur Batteries