Mesoporous Carbon Interlayers with Tailored Pore Volume as Polysulfide Reservoir for High-Energy Lithium–Sulfur Batteries

2015 ◽  
Vol 119 (9) ◽  
pp. 4580-4587 ◽  
Author(s):  
Juan Balach ◽  
Tony Jaumann ◽  
Markus Klose ◽  
Steffen Oswald ◽  
Jürgen Eckert ◽  
...  
Keyword(s):  
Pore Volume ◽  
Mesoporous Carbon ◽  
High Energy ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Functional Mesoporous Carbon-Coated Separator for Long-Life, High-Energy Lithium-Sulfur Batteries

2015 ◽  
Vol 25 (33) ◽  
pp. 5285-5291 ◽  
Author(s):  
Juan Balach ◽  
Tony Jaumann ◽  
Markus Klose ◽  
Steffen Oswald ◽  
Jürgen Eckert ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
High Energy ◽  
Lithium Sulfur Batteries ◽  
Carbon Coated ◽  
Long Life ◽  
Coated Separator ◽  
Lithium Sulfur

One step production of in situ nitrogen doped mesoporous carbon confined sulfur for lithium–sulfur batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (40) ◽  
pp. 31629-31636 ◽  
Author(s):  
Yajin Hao ◽  
Zhiqiang Shi ◽  
Jing Wang ◽  
Qiang Xu
Keyword(s):  
Specific Surface ◽  
Pore Volume ◽  
Mesoporous Carbon ◽  
High Specific Surface Area ◽  
Nitrogen Doped ◽  
Lithium Sulfur Batteries ◽  
One Step ◽  
Large Pore Volume ◽  
Lithium Sulfur

Nitrogen doped mesoporous carbon (NMC) with high specific surface area, large pore volume and stable nitrogen content has been prepared by in situ doping through one step carbonization to immobilize sulfur for lithium–sulfur batteries.

scholarly journals Cinnamon-Derived Hierarchically Porous Carbon as an Effective Lithium Polysulfide Reservoir in Lithium–Sulfur Batteries

Nanomaterials ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1220 ◽  
Author(s):  
Ranjith Thangavel ◽  
Aravindaraj G. Kannan ◽  
Rubha Ponraj ◽  
Karthikeyan Kaliyappan ◽  
Won-Sub Yoon ◽  
...  
Keyword(s):  
Surface Area ◽  
Porous Carbon ◽  
Pore Volume ◽  
High Surface ◽  
Electronic Conductivity ◽  
High Surface Area ◽  
High Energy ◽  
Superior Performance ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Lithium–sulfur batteries are attractive candidates for next generation high energy applications, but more research works are needed to overcome their current challenges, namely: (a) the poor electronic conductivity of sulfur, and (b) the dissolution and migration of long-chain polysulfides. Inspired by eco-friendly and bio-derived materials, we synthesized highly porous carbon from cinnamon sticks. The bio-carbon had an ultra-high surface area and large pore volume, which serves the dual functions of making sulfur particles highly conductive and acting as a polysulfide reservoir. Sulfur was predominantly impregnated into pores of the carbon, and the inter-connected hierarchical pore structure facilitated a faster ionic transport. The strong carbon framework maintained structural integrity upon volume expansion, and the unoccupied pores served as polysulfide trapping sites, thereby retaining the polysulfide within the cathode and preventing sulfur loss. These mechanisms contributed to the superior performance of the lithium-sulfur cell, which delivered a discharge capacity of 1020 mAh g−1 at a 0.2C rate. Furthermore, the cell exhibited improved kinetics, with an excellent cycling stability for 150 cycles with a very low capacity decay of 0.10% per cycle. This strategy of combining all types of pores (micro, meso and macro) with a high pore volume and ultra-high surface area had a synergistic effect on improving the performance of the sulfur cathode.

Crab shell-derived nitrogen-doped micro-/mesoporous carbon as an effective separator coating for high energy lithium–sulfur batteries

2017 ◽  
Vol 5 (37) ◽  
pp. 19892-19900 ◽  
Author(s):  
Hongyuan Shao ◽  
Fei Ai ◽  
Weikun Wang ◽  
Hao Zhang ◽  
Anbang Wang ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
High Energy ◽  
Crab Shell ◽  
Nitrogen Doped ◽  
Charge Process ◽  
Lithium Sulfur Batteries ◽  
Coated Separator ◽  
Lithium Sulfur

The synthesis of N-MIMEC from crab shell and the LiPS-trapping mechanisms of the N-MIMEC-coated separator during the discharge/charge process are demonstrated.

Sulfur vacancies in Co9S8-x/N-doped graphene enhancing electrochemical kinetics to high-performance lithium sulfur batteries

2021 ◽  
Author(s):  
Haojie Li ◽  
Yihua Song ◽  
Kai Xi ◽  
Wei Wang ◽  
Sheng Liu ◽  
...  
Keyword(s):  
Cathode Materials ◽  
High Performance ◽  
Catalytic Conversion ◽  
High Energy ◽  
Electrochemical Kinetics ◽  
Lithium Sulfur Batteries ◽  
Doped Graphene ◽  
Sulfur Battery ◽  
Areal Capacity ◽  
Lithium Sulfur

A sufficient areal capacity is necessary for achieving high-energy lithium sulfur battery, which requires high enough sulfur loading in cathode materials. Therefore, kinetically fast catalytic conversion of polysulfide intermediates is...

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.

Nitrogen-Doped Multi-Channel Carbon Nanofibers Incorporated with Nickel Nanoparticles as Multifunctional Modification of Separator for Ultra Stable Li-S Batteries

2021 ◽  
Author(s):  
Zhikang Wang ◽  
Guiqiang Cao ◽  
Da Bi ◽  
Tian-Xiong Tan ◽  
Qingxue Lai ◽  
...  
Keyword(s):  
Nickel Nanoparticles ◽  
Specific Capacity ◽  
High Energy ◽  
High Energy Density ◽  
Storage Device ◽  
Energy Storage Device ◽  
High Specific Capacity ◽  
Nitrogen Doped ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Lithium-Sulfur batteries have been regarded as the most promising electrochemical energy storage device in consideration of their satisfactory high specific capacity and high energy density. However, the inferior conversion efficiency...

Sign in / Sign up

Export Citation Format

Share Document