Zinc acetate activation-enhanced performance of hollow nano silica/carbon composite nanofibers for lithium-sulfur batteries

2018 ◽  
Vol 823 ◽  
pp. 287-295 ◽  
Author(s):  
Jing Li ◽  
Ya Guo ◽  
Peng Wen ◽  
Jinghui Zhu ◽  
Zhonggui Liu ◽  
...  
Keyword(s):  
Zinc Acetate ◽  
Composite Nanofibers ◽  
Carbon Composite ◽  
Nano Silica ◽  
Lithium Sulfur Batteries ◽  
Acetate Activation ◽  
Lithium Sulfur

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.

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.

PEDOT-PSS coated sulfur/carbon composite on porous carbon papers for high sulfur loading lithium–sulfur batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (117) ◽  
pp. 96862-96869 ◽  
Author(s):  
Zhijie Gong ◽  
Qixing Wu ◽  
Fang Wang ◽  
Xu Li ◽  
Xianping Fan ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Carbon Composite ◽  
Lithium Sulfur Battery ◽  
Practical Applications ◽  
Lithium Sulfur Batteries ◽  
Sulfur Battery ◽  
Lithium Sulfur ◽  
High Sulfur Loading

Increasing the sulfur loading in the cathode of a lithium–sulfur battery is an important way to improve its capacity for practical applications.

Preparation of sulfur/multiple pore size porous carbon composite via gas-phase loading method for lithium-sulfur batteries

2014 ◽  
Vol 137 ◽  
pp. 411-415 ◽  
Author(s):  
Long-Yan Li ◽  
Yan-Xiao Chen ◽  
Xiao-Dong Guo ◽  
Ben-He Zhong ◽  
Yan-Jun Zhong
Keyword(s):  
Pore Size ◽  
Gas Phase ◽  
Porous Carbon ◽  
Carbon Composite ◽  
Loading Method ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

PEO-coated sulfur-carbon composite for high-performance lithium-sulfur batteries

2015 ◽  
Vol 19 (11) ◽  
pp. 3373-3379 ◽  
Author(s):  
LinYan Li ◽  
Xiaoyan Liu ◽  
Kunlei Zhu ◽  
Jianhua Tian ◽  
Xuesheng Liu ◽  
...  
Keyword(s):  
High Performance ◽  
Carbon Composite ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

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 Graphene-wrapped sulfur/metal organic framework-derived microporous carbon composite for lithium sulfur batteries

APL Materials ◽  
2014 ◽  
Vol 2 (12) ◽  
pp. 124109 ◽  
Author(s):  
Renjie Chen ◽  
Teng Zhao ◽  
Tian Tian ◽  
Shuai Cao ◽  
Paul R. Coxon ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Carbon Composite ◽  
Microporous Carbon ◽  
Lithium Sulfur Batteries ◽  
Metal Organic ◽  
Lithium Sulfur ◽  
Organic Framework
Sign in / Sign up

Export Citation Format

Share Document