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

2014 ◽  
Vol 2 (12) ◽  
pp. 4316-4323 ◽  
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.

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

2019 ◽  
Vol 10 (1) ◽  
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.

An in situ encapsulation approach for polysulfide retention in lithium–sulfur batteries

2020 ◽  
Vol 8 (14) ◽  
pp. 6902-6907 ◽  
Author(s):  
Y. X. Ren ◽  
H. R. Jiang ◽  
C. Xiong ◽  
C. Zhao ◽  
T. S. Zhao
Keyword(s):  
Rate Capability ◽  
Carbon Composite ◽  
Cycle Life ◽  
Composite Cathodes ◽  
Lithium Sulfur Batteries ◽  
A Minor ◽  
Lithium Sulfur

An in situ encapsulation strategy is adopted for protecting sulfur/carbon composite cathodes, extending the cycle life with a minor sacrifice in the rate capability.

scholarly journals A simple and general approach for in situ synthesis of sulfur–porous carbon composites for lithium–sulfur batteries

2019 ◽  
Vol 3 (12) ◽  
pp. 3498-3509 ◽  
Author(s):  
Noel Díez ◽  
Guillermo A. Ferrero ◽  
Marta Sevilla ◽  
Antonio B. Fuertes
Keyword(s):  
Porous Carbon ◽  
Sodium Thiosulfate ◽  
In Situ Synthesis ◽  
Simple Approach ◽  
Carbon Composites ◽  
Sulfur Source ◽  
Lithium Sulfur Batteries ◽  
Activating Agent ◽  
Lithium Sulfur

Biomass-derived carbon/sulfur composites are synthesized by a simple approach using sodium thiosulfate as both the activating agent and sulfur source.

Self-weaving sulfur–carbon composite cathodes for high rate lithium–sulfur batteries

2012 ◽  
Vol 14 (42) ◽  
pp. 14495 ◽  
Author(s):  
Yu-Sheng Su ◽  
Yongzhu Fu ◽  
Arumugam Manthiram
Keyword(s):  
Carbon Composite ◽  
High Rate ◽  
Composite Cathodes ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

A mixed electron/ion conducting interlayer enabling ultra-stable cycle performance for solid state lithium sulfur batteries

2021 ◽  
Vol 487 ◽  
pp. 229428
Author(s):  
Zengqi Zhang ◽  
Beibei Zhao ◽  
Shu Zhang ◽  
Jianjun Zhang ◽  
Pengxian Han ◽  
...  
Keyword(s):  
Solid State ◽  
Cycle Performance ◽  
Stable Cycle ◽  
Lithium Sulfur Batteries ◽  
Ion Conducting ◽  
Lithium Sulfur

Multifunctional vanadium nitride@N-doped carbon composites for kinetically enhanced lithium–sulfur batteries

2018 ◽  
Vol 42 (7) ◽  
pp. 5109-5116 ◽  
Author(s):  
Lin Zhu ◽  
Chuanchuan Li ◽  
Wenjiao Ren ◽  
Mingyang Qin ◽  
Liqiang Xu
Keyword(s):  
Carbon Composite ◽  
Vanadium Nitride ◽  
Carbon Composites ◽  
Electrochemical Performances ◽  
Redox Kinetics ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Kinetics Of ◽  
Lithium Sulfur

VN@N-doped carbon composite was fabricated as sulfur host to enhance the redox kinetics of Li–S batteries, which displayed remarkable electrochemical performances.

Pyrite as a Low-Cost Additive in Sulfur Cathode Material for Stable Cycle Performance

2021 ◽  
Vol 105 (1) ◽  
pp. 191-198
Author(s):  
Dominika Capkova ◽  
Tomas Kazda ◽  
Ondrej Petruš ◽  
Ján Macko ◽  
Kamil Jasso ◽  
...  
Keyword(s):  
Cathode Material ◽  
High Efficiency ◽  
Low Cost ◽  
Cycle Performance ◽  
Metal Sulfides ◽  
Cycle Stability ◽  
Sulfur Addition ◽  
Composite Cathodes ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Various materials have been reported as an efficient host for sulfur to suppress large volume variation and polysulfide shuttle in lithium-sulfur batteries. Carbon materials are widely used as a matrix for sulfur to improve cycle performance and confine sulfur. Addition of transition metal sulfides into cathode material can improve cycle stability due to high efficiency of chemisorption and suppressing the polysulfide diffusion. In this work, various additions of pyrite to carbon and sulfur in the cathode material were investigated. The results show that the amount of pyrite has an affect on capacity and cycle stability of the electrode. Consequently, the lithium-sulfur batteries with the composite cathodes, containing 10 % of pyrite, exhibits stable discharge capacity of 788 mAh g-1 after 60 cycles at 0.2 C. Pyrite is a promising electrocatalyst in advanced lithium-sulfur batteries in the merits of low-cost, eco-friendliness and high activity towards polysulfides conversion reaction.

A hierarchical micro/mesoporous carbon fiber/sulfur composite for high-performance lithium–sulfur batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (44) ◽  
pp. 37443-37451 ◽  
Author(s):  
Zhijie Gong ◽  
Qixing Wu ◽  
Fang Wang ◽  
Xu Li ◽  
Xianping Fan ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
High Performance ◽  
Reversible Capacity ◽  
Cycle Performance ◽  
Hierarchical Porous Carbon ◽  
Capacity Retention ◽  
High Reversible Capacity ◽  
Hierarchical Porous ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

A hierarchical porous carbon fiber (HPCF) was prepared via electrospinning. The HPCF cathode delivers a high reversible capacity of 1070.6 mA h g−1 at 0.5C and a stable cycle performance with a capacity retention of 88.4% after 100 cycles.

scholarly journals Effective ion pathways and 3D conductive carbon networks in bentonite host enable stable and high-rate lithium–sulfur batteries

2021 ◽  
Vol 10 (1) ◽  
pp. 20-33
Author(s):  
Lian Wu ◽  
Yongqiang Dai ◽  
Wei Zeng ◽  
Jintao Huang ◽  
Bing Liao ◽  
...  
Keyword(s):  
Network Architecture ◽  
High Performance ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
High Rate ◽  
Lithium Sulfur Batteries ◽  
Carbon Networks ◽  
Carbon Coated ◽  
Lithium Sulfur ◽  
Initial Capacity

Abstract Fast charge transfer and lithium-ion transport in the electrodes are necessary for high performance Li–S batteries. Herein, a N-doped carbon-coated intercalated-bentonite (Bent@C) with interlamellar ion path and 3D conductive network architecture is designed to improve the performance of Li–S batteries by expediting ion/electron transport in the cathode. The interlamellar ion pathways are constructed through inorganic/organic intercalation of bentonite. The 3D conductive networks consist of N-doped carbon, both in the interlayer and on the surface of the modified bentonite. Benefiting from the unique structure of the Bent@C, the S/Bent@C cathode exhibits a high initial capacity of 1,361 mA h g−1 at 0.2C and achieves a high reversible capacity of 618.1 m Ah g−1 at 2C after 500 cycles with a sulfur loading of 2 mg cm−2. Moreover, with a higher sulfur loading of 3.0 mg cm−2, the cathode still delivers a reversible capacity of 560.2 mA h g−1 at 0.1C after 100 cycles.

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