S-doped Ti3C2F2 MXene as an ideal sulfur cathode host for high-performance rechargeable lithium–sulfur batteries

Yuan, Haoran; Yang, Jing; Zhang, Yong‐Wei

doi:10.1039/d3ta03518b

Cited by 7 publications

(1 citation statement)

References 39 publications

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“…Figure 7f and Figure S4b shows the charging/discharging curves of CNGA@S and KNGA@S cathodes at different cycles. These observations strongly suggest that CNGA@S effectively suppresses the migration of polysul des, thereby enhancing the e ciency and reversibility of the constructed cells [ 34 ].…”

Section: Resultsmentioning

confidence: 70%

Porous graphene with high porosity derived from nitrogen-doped graphene aerogel for vapor adsorption and lithium–sulfur batteries

Liu,

Zhao,

Zhou

et al. 2024

Preprint

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Graphene-based aerogels have garnered significant attention due to their combined advantages derived from both graphene and aerogels. Nevertheless, a key limitation in their practical applications arises from their relatively modest specific surface area and pore volume. In this study, porous graphene materials with high porosity are synthesized through the physical and chemical activation of nitrogen-doped graphene aerogel (NGA) using carbon dioxide and KOH as activating agents. Utilizing various characterization techniques, including scanning electron microscopy, nitrogen adsorption–desorption measurements, and X-ray photoelectron spectroscopy, the morphology, porous characteristics, and chemical composition of porous graphene are elucidated. The carbon dioxide-activated NGA (CNGA) maintains the spongy aerogel structure and exhibits a hierarchical porous structure encompassing micropores, mesopores, and macropores. Notably, CNGA exhibits a high specific surface area (2030 m2 g–1) and pore volume (5.4 cm3 g–1). Given its intriguing properties, CNGA demonstrates good performance as a gas adsorbent and sulfur host.

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Section: Resultsmentioning

confidence: 70%

Porous graphene with high porosity derived from nitrogen-doped graphene aerogel for vapor adsorption and lithium–sulfur batteries

Liu,

Zhao,

Zhou

et al. 2024

Preprint

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Multi‐Interface Engineering of MXenes for Self‐Powered Wearable Devices

Liu,

Feng,

Yin

et al. 2024

Advanced Materials

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Self‐powered wearable devices with integrated energy supply module and sensitive sensors have significantly blossomed for continuous monitoring of human activity and the surrounding environment in healthcare sectors. The emerging of MXene‐based materials has brought research upsurge in the fields of energy and electronics, owing to their excellent electrochemical performance, large surface area, superior mechanical performance, and tuneable interfacial properties, where their performance can be further boosted via multi‐interface engineering. Herein, a comprehensive review of recent progress in MXenes for self‐powered wearable devices is discussed from the aspects of multi‐interface engineering. The fundamental properties of MXenes including electronic, mechanical, optical, and thermal characteristics are discussed in detail. Different from previous review works on MXenes, multi‐interface engineering of MXenes from termination regulation to surface modification and their impact on the performance of materials and energy storage/conversion devices are summarized. Based on the interfacial manipulation strategies, potential applications of MXene‐based self‐powered wearable devices are outlined. Finally, proposals and perspectives are provided on the current challenges and future directions in MXene‐based self‐powered wearable devices.This article is protected by copyright. All rights reserved

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Enhancing Lithium–Sulfur Battery Performance with MXene: Specialized Structures and Innovative Designs

Li,

Mei,

et al. 2024

Advanced Science

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Established in 1962, lithium–sulfur (Li–S) batteries boast a longer history than commonly utilized lithium–ion batteries counterparts such as LiCoO2 (LCO) and LiFePO4 (LFP) series, yet they have been slow to achieve commercialization. This delay, significantly impacting loading capacity and cycle life, stems from the long‐criticized low conductivity of the cathode and its byproducts, alongside challenges related to the shuttle effect, and volume expansion. Strategies to improve the electrochemical performance of Li–S batteries involve improving the conductivity of the sulfur cathode, employing an adamantane framework as the sulfur host, and incorporating catalysts to promote the transformation of lithium polysulfides (LiPSs). 2D MXene and its derived materials can achieve almost all of the above functions due to their numerous active sites, external groups, and ease of synthesis and modification. This review comprehensively summarizes the functionalization advantages of MXene‐based materials in Li–S batteries, including high‐speed ionic conduction, structural diversity, shuttle effect inhibition, dendrite suppression, and catalytic activity from fundamental principles to practical applications. The classification of usage methods is also discussed. Finally, leveraging the research progress of MXene, the potential and prospects for its novel application in the Li–S field are proposed.

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S-doped Ti₃C₂F₂ MXene as an ideal sulfur cathode host for high-performance rechargeable lithium–sulfur batteries

Abstract: An ideal host for sulfur cathode in rechargeable lithium sulfur batteries (RLSBs) should concurrently possess all the following features: A high electrical conduction, suppression of the shuttle effect, a fast...

Cited by 7 publications

References 39 publications

Porous graphene with high porosity derived from nitrogen-doped graphene aerogel for vapor adsorption and lithium–sulfur batteries

Porous graphene with high porosity derived from nitrogen-doped graphene aerogel for vapor adsorption and lithium–sulfur batteries

Multi‐Interface Engineering of MXenes for Self‐Powered Wearable Devices

Enhancing Lithium–Sulfur Battery Performance with MXene: Specialized Structures and Innovative Designs

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