Efficient polysulfide barrier of a graphene aerogel–carbon nanofibers–Ni network for high-energy-density lithium–sulfur batteries with ultrahigh sulfur content

2018 ◽  
Vol 6 (42) ◽  
pp. 20926-20938 ◽  
Author(s):  
Yongzheng Zhang ◽  
Ruochen Wang ◽  
Weiqiang Tang ◽  
Liang Zhan ◽  
Shuangliang Zhao ◽  
...  
Keyword(s):  
Energy Density ◽  
Reversible Capacity ◽  
High Energy ◽  
High Energy Density ◽  
Rate Performance ◽  
Sulfur Cathode ◽  
Graphene Aerogel ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur ◽  
Modified Separator

The GA–CNFs–Ni modified separator endows the “double high” sulfur cathode (5–10 mg cm−2, 90%) with a stable reversible capacity and superior rate performance.

Fast Polysulfides Catalytic Conversion and Self-Repairing Ability for High Loading Lithium-Sulfur Batteries using a Permselective Coating Layer Modified Separator

Nanoscale ◽  
2021 ◽  
Author(s):  
Fanglei Zeng ◽  
Fang Wang ◽  
Ning Li ◽  
Ke Meng Song ◽  
Shi-Ye Chang ◽  
...  
Keyword(s):  
Energy Density ◽  
Coating Layer ◽  
High Energy ◽  
High Energy Density ◽  
High Loading ◽  
Battery System ◽  
Shuttle Effect ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur ◽  
Modified Separator

Li-S battery is considered as one of the most promising battery system because of its large theoretical capacity and high energy density. However, the “shuttle effect” of soluble polysulfides and...

Self‐Supported and Flexible Sulfur Cathode Enabled via Synergistic Confinement for High‐Energy‐Density Lithium–Sulfur Batteries

2019 ◽  
Vol 31 (33) ◽  
pp. 1902228 ◽  
Author(s):  
Zhuosen Wang ◽  
Jiadong Shen ◽  
Jun Liu ◽  
Xijun Xu ◽  
Zhengbo Liu ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Sulfur Cathode ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Mechanistic Understanding of Metal Phosphide Host for Sulfur Cathode in High-Energy-Density Lithium–Sulfur Batteries

ACS Nano ◽  
2019 ◽  
Vol 13 (8) ◽  
pp. 8986-8996 ◽  
Author(s):  
Jiadong Shen ◽  
Xijun Xu ◽  
Jun Liu ◽  
Zhengbo Liu ◽  
Fangkun Li ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Sulfur Cathode ◽  
Metal Phosphide ◽  
Lithium Sulfur Batteries ◽  
Mechanistic Understanding ◽  
Lithium Sulfur

scholarly journals MoO2 nanoparticles embedded in N-doped hydrangea-like carbon as a sulfur host for high-performance lithium–sulfur batteries

RSC Advances ◽  
2020 ◽  
Vol 10 (34) ◽  
pp. 20173-20183
Author(s):  
Yasai Wang ◽  
Guilin Feng ◽  
Yang Wang ◽  
Zhenguo Wu ◽  
Yanxiao Chen ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
High Performance ◽  
High Energy ◽  
High Energy Density ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Lithium Sulfur

Lithium–sulfur batteries are considered to be promising energy storage devices owing to their high energy density, relatively low price and abundant resources.

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.

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