3D graphene framework supported Li2S coated with ultra-thin Al2O3 films: binder-free cathodes for high-performance lithium sulfur batteries

Chen, Yan; Lu, Songtao; Zhou, Jia; Wu, Xiaohong; Qin, Wei; Ogoke, Ogechi; Wu, Gang

doi:10.1039/c6ta08039a

Cited by 79 publications

(50 citation statements)

References 69 publications

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“…The π–π stacking interaction and the increasing hydrophobicity promote reduced GO sheets to partially interlock with each other and finally self‐assembled into a 3D skeleton. In order to exploit the exceptional qualities of the graphene sponges, multifarious functional components have been hybridized with graphene foams, including sulfur nanoparticles, metal oxides, and sulfides . Manthiram and co‐workers presented Li 2 S‐coated 3D‐doped graphene sponges as a self‐supported cathode through a facile liquid infiltration–evaporation coating method .…”

Section: D Carbon Current Collectorsmentioning

confidence: 99%

Advanced 3D Current Collectors for Lithium‐Based Batteries

et al. 2018

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Li-based batteries are a hot research topic because they are the most popular energy storage system for high energy-density devices. As an important component of the battery, the current collectors in both cathode and anode should be well designed. Herein, the design of 3D current collectors for Li-based batteries is considered, including 3D metal-based and carbon-based current collectors. The progress in nanotechnology provides appropriate 3D current collectors characterized by highly efficient morphologies and architectures. In particular, 3D current collectors with different morphology are classified. Critical factors of current collectors that affect the electrochemical performance of Li-based batteries are comprehensively debated. Finally, conclusion and perspectives of the future research in this field are discussed.

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Section: D Carbon Current Collectorsmentioning

confidence: 99%

Advanced 3D Current Collectors for Lithium‐Based Batteries

et al. 2018

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“…Many materials with polar functional groups such as metal oxide, metal sulfide, and polymer materials have been applied in the Li 2 S compounding [49,50]. Chen et al coated ultrathin Al 2 O 3 layers (∼1 nm) onto the Li 2 S-graphene oxide sponge by an atomic layer deposition (ALD) technique.…”

Section: Compound Of LI 2 S With Polar Chemical Bindingmentioning

confidence: 99%

“…e threedimensional graphene oxide contributes high electronic conductivity to the composites, and the Al 2 O 3 layers effectively suppress the dissolution of lithium polysulfides through the strong binding between Al 2 O 3 layers and Li 2 S x . As a result, long-term cycling stability (high capacity retention of 88% after 300 cycles at 0.5°C) and high rate performance were achieved simultaneously [50]. LiTiO 2 is believed to exhibit a strong binding to the lithium polysulfides and to induce the conversion of long polysulfides into short polysulfides, which have lower solubility in electrolytes.…”

Section: Compound Of LI 2 S With Polar Chemical Bindingmentioning

confidence: 99%

Lithium Sulfide as Cathode Materials for Lithium-Ion Batteries: Advances and Challenges

Zhou

Zhang

Wang

et al. 2020

Journal of Chemistry

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Due to the ever-growing demand for high-density energy storage devices, lithium-ion batteries with a high-capacity cathode and anode are thought to be the next-generation batteries for their high energy density. Lithium sulfide (Li 2 S) is considered the promising cathode material for its high theoretical capacity, high melting point, affordable volume expansion, and lithium composition. is review summarizes the activation and lithium storage mechanism of Li 2 S cathodes. e design strategies in improving the electrochemical performance are highlighted. e application of the Li 2 S cathode in full cells of lithium-ion batteries is discussed. e challenges and new directions in commercial applications of Li 2 S cathodes are also pointed out.

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“…However, the modification of lithium anode material is also an important part of the research content of LSBs, and the present report on anode is much less than the cathode materials. Mohan et al . applied graphene to modify the anode material and prepared a binder free porous 3D Sn/graphene/reduced graphene oxide (Sn/G/RGO) composite with a lithium foil on surface as anode to improve the electrochemical performance of LSBs at the first time.…”

Section: Graphenementioning

confidence: 99%

“… Schematic representing the preparation of sandwich type porous 3D structures of (a) pristine Sn/RGO and (b) Sn/G/RGO composite …”

Section: Graphenementioning

confidence: 99%

Review of Carbon Materials for Lithium‐Sulfur Batteries

et al. 2018

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Lithium‐sulfur battery as one of the most promising and attractive candidate among the emerging electrical energy storage has attracted enormous attentions. It has superior characteristics of high specific energy density (2600 Wh kg−1) and high theoretical specific capacity (1675 mAh g−1), which is equal to 3–5 times of lithium‐ion batteries, and more closed to the requirement of the pure electric vehicles and hybrid electric vehicles. Furthermore, sulfur element is inexpensive, naturally abundant, and environmentally friendly. However, the commercial application of lithium‐sulfur batteries (LSBs) still faces some major technical obstacles such as the low electrical conductivity of sulfur, the shuttle effect of polysulfides, and the drastic volume expansion during charge/discharge process. In this review paper, we focus on some of the effective strategies in boosting the electrochemical performance of LSBs through the development of sulfur/carbon composite electrode materials, including the use of porous carbons, carbon nanotubes/fibers, and graphene. The integration of carbon materials and sulfur can efficiently improve the utilization of active materials, enhance the conductivity of cathode materials, and provide a polysulfides barrier. Simultaneously, the challenges and prospects on LSBs in the near future are also presented and discussed.

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3D graphene framework supported Li₂S coated with ultra-thin Al₂O₃ films: binder-free cathodes for high-performance lithium sulfur batteries

Abstract: A newly developed Al2O3–Li2S–GS cathode with Al2O3 ultra-thin layers preferentially coated on Li2S by ALD can deliver a significantly improved cycling and rate performance for Li–S batteries.

Cited by 79 publications

References 69 publications

Advanced 3D Current Collectors for Lithium‐Based Batteries

Advanced 3D Current Collectors for Lithium‐Based Batteries

Lithium Sulfide as Cathode Materials for Lithium-Ion Batteries: Advances and Challenges

Review of Carbon Materials for Lithium‐Sulfur Batteries

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