Cathode materials based on carbon nanotubes for high-energy-density lithium–sulfur batteries

AbstractThe lithium–sulfur (Li–S) batteries are promising because of the high energy density, low cost, and natural abundance of sulfur material. Li–S batteries have suffered from severe capacity fading and poor cyclability, resulting in low sulfur utilization. Herein, S-DHCS/CNTs are synthesized by integration of a double-hollow carbon sphere (DHCS) with carbon nanotubes (CNTs), and the addition of sulfur in DHCS by melt impregnations. The proposed S-DHCS/CNTs can effectively confine sulfur and physically suppress the diffusion of polysulfides within the double-hollow structures. CNTs act as a conductive agent. S-DHCS/CNTs maintain the volume variations and accommodate high sulfur content 73 wt%. The designed S-DHCS/CNTs electrode with high sulfur loading (3.3 mg cm−2) and high areal capacity (5.6 mAh mg cm−2) shows a high initial specific capacity of 1709 mAh g−1 and maintains a reversible capacity of 730 mAh g−1 after 48 cycles at 0.2 C with high coulombic efficiency (100%). This work offers a fascinating strategy to design carbon-based material for high-performance lithium–sulfur batteries.

Download Full-text

Elastic three-dimensional Fe-doped polypyrrole aerogel current collector for high-loading and high-energy-density lithium-sulfur batteries

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2021.163298 ◽

2021 ◽

pp. 163298

Author(s):

Jianan Wang ◽

Jianwei Liu ◽

Qianyue Ma ◽

Xin Chen ◽

Shiyi Sun ◽

...

Keyword(s):

Energy Density ◽

Three Dimensional ◽

Current Collector ◽

High Energy ◽

High Energy Density ◽

High Loading ◽

Lithium Sulfur Batteries ◽

Lithium Sulfur

Download Full-text

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

Nanoscale ◽

10.1039/d1nr04357a ◽

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...

Download Full-text

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

RSC Advances ◽

10.1039/d0ra02102d ◽

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.

Download Full-text

Stringed “tube on cube” nanohybrids as compact cathode matrix for high-loading and lean-electrolyte lithium–sulfur batteries

Energy & Environmental Science ◽

10.1039/c8ee01377b ◽

2018 ◽

Vol 11 (9) ◽

pp. 2372-2381 ◽

Cited By ~ 117

Author(s):

Gaoran Li ◽

Wen Lei ◽

Dan Luo ◽

Yaping Deng ◽

Zhiping Deng ◽

...

Keyword(s):

Energy Density ◽

High Energy ◽

High Energy Density ◽

High Loading ◽

Hybrid Architecture ◽

Lithium Sulfur Batteries ◽

Lithium Sulfur ◽

High Sulfur Loading

Stringed “tube on cube” hybrid architecture is developed for high-energy-density lithium–sulfur batteries with high sulfur loading and lean electrolyte.

Download Full-text