Uniform Li2S precipitation on N,O-codoped porous hollow carbon fibers for high-energy-density lithium–sulfur batteries with superior stability

2016 ◽  
Vol 52 (73) ◽  
pp. 10964-10967 ◽  
Author(s):  
Long Qie ◽  
Arumugam Manthiram
Keyword(s):  
Carbon Fibers ◽  
Active Material ◽  
Current Collector ◽  
High Energy ◽  
High Energy Density ◽  
Lithium Sulfur Batteries ◽  
Hollow Carbon ◽  
Sulfur Cathodes ◽  
Lithium Sulfur

Long-term cycling stability with high-loading sulfur cathodes has been achieved using N,O-codoped carbon hollow fibers as the current collector and Li2S6 as the starting active material.

scholarly journals Confine sulfur in double-hollow carbon sphere integrated with carbon nanotubes for advanced lithium–sulfur batteries

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Maru Dessie Walle ◽  
You-Nian Liu
Keyword(s):  
Carbon Nanotubes ◽  
Coulombic Efficiency ◽  
Specific Capacity ◽  
High Energy ◽  
High Energy Density ◽  
Carbon Sphere ◽  
Hollow Carbon Sphere ◽  
Lithium Sulfur Batteries ◽  
Hollow Carbon ◽  
Lithium Sulfur

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.

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

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

Facile Synthesis of Uniform Carbon Coated Li2S/rGO cathode for High-Performance Lithium-Sulfur Batteries

MRS Advances ◽  
2018 ◽  
Vol 3 (60) ◽  
pp. 3501-3506 ◽  
Author(s):  
Gaind P. Pandey ◽  
Joshua Adkins ◽  
Lamartine Meda
Keyword(s):  
High Performance ◽  
Active Material ◽  
Cycling Performance ◽  
High Energy ◽  
High Energy Density ◽  
Shell Nanostructures ◽  
Lithium Sulfur Batteries ◽  
Carbon Coated ◽  
Co Precipitation ◽  
Lithium Sulfur

ABSTRACTLithium sulfide (Li2S) is one of the most attractive cathode materials for high energy density lithium batteries as it has a high theoretical capacity of 1166 mA h g-1. However, Li2S suffers from poor rate performance and short cycle life due to its insulating nature and polysulfide shuttle during cycling. In this work, we report a facile and viable approach to address these issues. We propose a method to synthesize a Li2S based nanocomposite cathode material by dissolving Li2S as the active material, polyvinylpyrrolidone (PVP) as the carbon precursor, and graphene oxide (GO) as a matrix to enhance the conductivity, followed by a co-precipitation and high-temperature carbonization process. The Li2S/rGO cathode yields an exceptionally high initial capacity of 817 mAh g-1 based on Li2S mass at C/20 rate and also shows a good cycling performance. The carbon-coated Li2S/rGO cathode demonstrates the capability of robust core-shell nanostructures for different rates and improved capacity retention, revealing carbon coated Li2S/rGO composites as an outstanding system for high-performance lithium-sulfur batteries.

Electrostatic trapping of polysulfides enabled by imidazolium-based ionic polymers for high-energy-density lithium–sulfur batteries

2018 ◽  
Vol 6 (17) ◽  
pp. 7375-7381 ◽  
Author(s):  
Zhibin Cheng ◽  
Hui Pan ◽  
Zhubing Xiao ◽  
Dejian Chen ◽  
Xiaoju Li ◽  
...  
Keyword(s):  
Main Chain ◽  
High Energy ◽  
High Energy Density ◽  
Ionic Polymers ◽  
Shuttle Effect ◽  
Effective Suppression ◽  
Lithium Polysulfide ◽  
Lithium Sulfur Batteries ◽  
Sulfur Cathodes ◽  
Lithium Sulfur

A new lithium polysulfide (PS) trapping strategy based on electrostatic attraction between imidazolium groups and PSs has been demonstrated. Simple introduction of main-chain imidazolium-based ionic polymers into sulfur cathodes results in effective suppression of the PS shuttle effect, thus significantly improving cycling stability of lithium–sulfur batteries.

scholarly journals Self-supporting sulfur cathodes enabled by two-dimensional carbon yolk-shell nanosheets for high-energy-density lithium-sulfur batteries

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Fei Pei ◽  
Lele Lin ◽  
Daohui Ou ◽  
Zongmin Zheng ◽  
Shiguang Mo ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Two Dimensional ◽  
Lithium Sulfur Batteries ◽  
Sulfur Cathodes ◽  
Lithium Sulfur

High Energy Density Lithium-Sulfur Batteries: Challenges of Thick Sulfur Cathodes

2015 ◽  
Vol 5 (16) ◽  
pp. 1402290 ◽  
Author(s):  
Dongping Lv ◽  
Jianming Zheng ◽  
Qiuyan Li ◽  
Xi Xie ◽  
Seth Ferrara ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Lithium Sulfur Batteries ◽  
Sulfur Cathodes ◽  
Lithium Sulfur

scholarly journals Graphene-Based Nanomaterials as the Cathode for Lithium-Sulfur Batteries

Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2507
Author(s):  
Jingkun Tian ◽  
Fei Xing ◽  
Qiqian Gao
Keyword(s):  
Energy Storage ◽  
Storage System ◽  
Chemical Properties ◽  
Clean Energy ◽  
High Energy ◽  
High Energy Density ◽  
Discharge Process ◽  
Lithium Sulfur Batteries ◽  
Sulfur Cathodes ◽  
Lithium Sulfur

The global energy crisis and environmental problems are becoming increasingly serious. It is now urgent to vigorously develop an efficient energy storage system. Lithium-sulfur batteries (LSBs) are considered to be one of the most promising candidates for next-generation energy storage systems due to their high energy density. Sulfur is abundant on Earth, low-cost, and environmentally friendly, which is consistent with the characteristics of new clean energy. Although LSBs possess numerous advantages, they still suffer from numerous problems such as the dissolution and diffusion of sulfur intermediate products during the discharge process, the expansion of the electrode volume, and so on, which severely limit their further development. Graphene is a two-dimensional crystal material with a single atomic layer thickness and honeycomb bonding structure formed by sp2 hybridization of carbon atoms. Since its discovery in 2004, graphene has attracted worldwide attention due to its excellent physical and chemical properties. Herein, this review summarizes the latest developments in graphene frameworks, heteroatom-modified graphene, and graphene composite frameworks in sulfur cathodes. Moreover, the challenges and future development of graphene-based sulfur cathodes are also discussed.

A high energy density Li2S@C nanocomposite cathode with a nitrogen-doped carbon nanotube top current collector

2015 ◽  
Vol 3 (37) ◽  
pp. 18913-18919 ◽  
Author(s):  
Su Zhang ◽  
Meinan Liu ◽  
Fei Ma ◽  
Fangmin Ye ◽  
Hongfei Li ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Energy Density ◽  
Current Collector ◽  
High Energy ◽  
High Energy Density ◽  
Nitrogen Doped ◽  
Carbon Nanotube Film ◽  
Lithium Sulfur Batteries ◽  
Nitrogen Doped Carbon ◽  
Lithium Sulfur

High energy density lithium sulfur batteries with 804 Wh/kg were reported based on sheet-like Li2S@C composites with the assistance of nitrogen doped carbon nanotube film.

Facile and scalable fabrication of high-energy-density sulfur cathodes for pragmatic lithium-sulfur batteries

2019 ◽  
Vol 422 ◽  
pp. 104-112 ◽  
Author(s):  
Min-Seop Kim ◽  
Mun Sek Kim ◽  
Vandung Do ◽  
Yongyao Xia ◽  
Woong Kim ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Lithium Sulfur Batteries ◽  
Sulfur Cathodes ◽  
Lithium Sulfur
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