1D and 2D Flexible Carbon Matrix Materials for Lithium–Sulfur Batteries

2019 ◽  
pp. 145-170 ◽  
Author(s):  
Tianyi Wang ◽  
Yushu Liu ◽  
Dawei Su ◽  
Guoxiu Wang
Keyword(s):  
Carbon Matrix ◽  
Lithium Sulfur Batteries ◽  
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.

Loofah sponge as a high-loading 3D carbon matrix for lithium-sulfur batteries

2019 ◽  
Vol 247 ◽  
pp. 86-89 ◽  
Author(s):  
Shidong Song ◽  
Yiwei He ◽  
Yanli Ruan ◽  
Ningyi Jiang ◽  
Bowen Cheng
Keyword(s):  
Carbon Matrix ◽  
High Loading ◽  
Loofah Sponge ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Preparation of a carbon nanofibers–carbon matrix–sulfur composite as the cathode material of lithium–sulfur batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (9) ◽  
pp. 7159-7171 ◽  
Author(s):  
Xuebing Yang ◽  
Wen Zhu ◽  
Guobao Cao ◽  
Xudong Zhao
Keyword(s):  
Cathode Material ◽  
Carbon Nanofibers ◽  
Lithium Batteries ◽  
Low Cost ◽  
Specific Capacity ◽  
Carbon Matrix ◽  
Lithium Sulfur Batteries ◽  
Theoretical Specific Capacity ◽  
Lithium Sulfur

Sulfur is a promising cathode material for lithium batteries as it possesses high theoretical specific capacity and low cost.

scholarly journals A Sheet-like Carbon Matrix Hosted Sulfur as Cathode for High-performance Lithium-Sulfur Batteries

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Songtao Lu ◽  
Yan Chen ◽  
Jia Zhou ◽  
Zhida Wang ◽  
Xiaohong Wu ◽  
...  
Keyword(s):  
High Performance ◽  
Carbon Matrix ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur
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