Core–Shell Structural S@polyaniline/SiO2 Composite Cathodes for Lithium–Sulfur Batteries

The dissolution of polysulfides (LiPSs) always leads to low Coulombic efficiency, dramatic capacity decay, and short cycle life, which hinders the practical application of lithium-sulfur (Li-S) batteries. In this study,...

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Fast electrochemical kinetics and strong polysulfide adsorption by a highly oriented MoS2 nanosheet@N-doped carbon interlayer for lithium–sulfur batteries

Journal of Materials Chemistry A ◽

10.1039/c9ta00458k ◽

2019 ◽

Vol 7 (13) ◽

pp. 7897-7906 ◽

Cited By ~ 37

Author(s):

Jingyi Wu ◽

Xiongwei Li ◽

Hongxia Zeng ◽

Yang Xue ◽

Fangyan Chen ◽

...

Keyword(s):

Electrochemical Kinetics ◽

Core Shell ◽

Lithium Sulfur Batteries ◽

Shell Design ◽

Mos2 Nanosheet ◽

Lithium Sulfur

Integrating polysulfide catalyst MoS2 nanosheets and conductive N-doped carbon in a core–shell design as an interlayer for lithium–sulfur batteries.

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Cathode porosity is a missing key parameter to optimize lithium-sulfur battery energy density

Nature Communications ◽

10.1038/s41467-019-12542-6 ◽

2019 ◽

Vol 10 (1) ◽

Cited By ~ 23

Author(s):

Ning Kang ◽

Yuxiao Lin ◽

Li Yang ◽

Dongping Lu ◽

Jie Xiao ◽

...

Keyword(s):

Energy Density ◽

Lithium Ion ◽

Carbon Matrix ◽

Reversible Capacity ◽

High Energy ◽

Carbon Composite ◽

Composite Cathodes ◽

Lithium Sulfur Batteries ◽

Lithium Sulfur ◽

Key Parameter

Abstract While high sulfur loading has been pursued as a key parameter to build realistic high-energy lithium-sulfur batteries, less attention has been paid to the cathode porosity, which is much higher in sulfur/carbon composite cathodes than in traditional lithium-ion battery electrodes. For high-energy lithium-sulfur batteries, a dense electrode with low porosity is desired to minimize electrolyte intake, parasitic weight, and cost. Here we report the profound impact on the discharge polarization, reversible capacity, and cell cycling life of lithium-sulfur batteries by decreasing cathode porosities from 70 to 40%. According to the developed mechanism-based analytical model, we demonstrate that sulfur utilization is limited by the solubility of lithium-polysulfides and further conversion from lithium-polysulfides to Li2S is limited by the electronically accessible surface area of the carbon matrix. Finally, we predict an optimized cathode porosity to maximize the cell level volumetric energy density without sacrificing the sulfur utilization.

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High Mass Loading Copper Sulfide Based Composite Cathodes for All-Solid-State Lithium Sulfur Batteries Enables High Volumetric Capacity

ECS Meeting Abstracts ◽

10.1149/ma2020-014558mtgabs ◽

2020 ◽

Vol MA2020-01 (4) ◽

pp. 558-558

Author(s):

Seyed milad Hosseini ◽

Seitaro Ito ◽

Yuichi Aihara ◽

Alberto Varzi ◽

Stefano Passerini

Keyword(s):

Solid State ◽

Copper Sulfide ◽

High Mass ◽

Mass Loading ◽

Volumetric Capacity ◽

Composite Cathodes ◽

Lithium Sulfur Batteries ◽

Lithium Sulfur

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Large Self-Weaving Sulfur-MWCNT Composite Cathodes for High Rate Lithium-Sulfur Batteries

ECS Meeting Abstracts ◽

10.1149/ma2012-02/10/781 ◽

2012 ◽

Keyword(s):

High Rate ◽

Composite Cathodes ◽

Lithium Sulfur Batteries ◽

Lithium Sulfur

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In situ sulfur deposition route to obtain sulfur–carbon composite cathodes for lithium–sulfur batteries

Journal of Materials Chemistry A ◽

10.1039/c3ta14459c ◽

2014 ◽

Vol 2 (12) ◽

pp. 4316-4323 ◽

Cited By ~ 75

Author(s):

W. G. Wang ◽

X. Wang ◽

L. Y. Tian ◽

Y. L. Wang ◽

S. H. Ye

Keyword(s):

Reversible Capacity ◽

Carbon Composite ◽

Cycle Performance ◽

Carbon Composites ◽

Stable Cycle ◽

Sulfur Deposition ◽

Composite Cathodes ◽

Lithium Sulfur Batteries ◽

Lithium Sulfur

Sulfur–carbon composites were prepared by an in situ sulfur deposition route developed for the heterogeneous nucleation of sulfur into nanopores of conductive carbon black (CCB) by fumigation of Na2S4/CCB powder with HCl. The sulfur–carbon composites demonstrate enhanced reversible capacity and stable cycle performance.

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