Synthesis and Electrochemical Properties of MoS2/rGO/S Composite as a Cathode Material for Lithium–Sulfur Batteries

To develop the next-generation energy storage systems, lithium-sulfur batteries represent an attractive option due to its high theoretical capacity, and energy density. In this work, MoS2/rGO (reduced graphene oxide) was prepared by hydrothermal synthesis and sulfur added by the melt diffusion method. The as-prepared MoS2/rGO has strong polysulfides entrapping, high conductivity, large surface area, and high catalytic activity, consequently resulting in enhanced rate performance and cycling capability of Li-S batteries. The coin cells were constructed with the MoS2/rGO/S cathode material, exhibit a high reversible capacity of nearly 1380 mAh/g at 0.1 C, outstanding cycling stability with a low capacity fading rate. Present work reveals that the hierarchal MoS2/rGO/S cathodes are potential candidate materials for future high-performance lithium-sulfur batteries.

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Effective ion pathways and 3D conductive carbon networks in bentonite host enable stable and high-rate lithium–sulfur batteries

Nanotechnology Reviews ◽

10.1515/ntrev-2021-0005 ◽

2021 ◽

Vol 10 (1) ◽

pp. 20-33

Author(s):

Lian Wu ◽

Yongqiang Dai ◽

Wei Zeng ◽

Jintao Huang ◽

Bing Liao ◽

...

Keyword(s):

Network Architecture ◽

High Performance ◽

Lithium Ion ◽

Reversible Capacity ◽

High Rate ◽

Lithium Sulfur Batteries ◽

Carbon Networks ◽

Carbon Coated ◽

Lithium Sulfur ◽

Initial Capacity

Abstract Fast charge transfer and lithium-ion transport in the electrodes are necessary for high performance Li–S batteries. Herein, a N-doped carbon-coated intercalated-bentonite (Bent@C) with interlamellar ion path and 3D conductive network architecture is designed to improve the performance of Li–S batteries by expediting ion/electron transport in the cathode. The interlamellar ion pathways are constructed through inorganic/organic intercalation of bentonite. The 3D conductive networks consist of N-doped carbon, both in the interlayer and on the surface of the modified bentonite. Benefiting from the unique structure of the Bent@C, the S/Bent@C cathode exhibits a high initial capacity of 1,361 mA h g−1 at 0.2C and achieves a high reversible capacity of 618.1 m Ah g−1 at 2C after 500 cycles with a sulfur loading of 2 mg cm−2. Moreover, with a higher sulfur loading of 3.0 mg cm−2, the cathode still delivers a reversible capacity of 560.2 mA h g−1 at 0.1C after 100 cycles.

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A polysulfide reduction accelerator – NiS2-modified sulfurized polyacrylonitrile as a high performance cathode material for lithium–sulfur batteries

Journal of Materials Chemistry A ◽

10.1039/c7ta04279e ◽

2017 ◽

Vol 5 (42) ◽

pp. 22120-22124 ◽

Cited By ~ 33

Author(s):

Yonggang Liu ◽

Weikun Wang ◽

Anbang Wang ◽

Zhaoqing Jin ◽

Hailei Zhao ◽

...

Keyword(s):

Cathode Material ◽

High Performance ◽

Lithium Sulfur Batteries ◽

Lithium Sulfur

A NiS2-modified sulfurized polyacrylonitrile composite is prepared by simply co-heating a mixture of sulfur, NiCO3, and polyacrylonitrile.

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Carbon Nanotube Doped with Gaseous-phase Silica/Sulfur Composite as a Cathode Material for High-performance Lithium–Sulfur Batteries

International Journal of Electrochemical Science ◽

10.20964/2017.12.32 ◽

2017 ◽

pp. 11343-11352 ◽

Cited By ~ 3

Author(s):

Yafang Guo ◽

Keyword(s):

Carbon Nanotube ◽

Cathode Material ◽

Gaseous Phase ◽

High Performance ◽

Lithium Sulfur Batteries ◽

Lithium Sulfur

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Reduced graphene oxide coated Fe-soc as a cathode material for high-performance lithium-sulfur batteries

Ceramics International ◽

10.1016/j.ceramint.2020.06.195 ◽

2020 ◽

Vol 46 (15) ◽

pp. 24155-24161 ◽

Cited By ~ 2

Author(s):

Jia Yao ◽

Mi Zhang ◽

Guodong Han ◽

Xin Wang ◽

Zhentao Wang ◽

...

Keyword(s):

Graphene Oxide ◽

Cathode Material ◽

Reduced Graphene Oxide ◽

High Performance ◽

Reduced Graphene ◽

Lithium Sulfur Batteries ◽

Lithium Sulfur

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Fabrication of layered Ti3C2 with an accordion-like structure as a potential cathode material for high performance lithium–sulfur batteries

Journal of Materials Chemistry A ◽

10.1039/c4ta07101h ◽

2015 ◽

Vol 3 (15) ◽

pp. 7870-7876 ◽

Cited By ~ 93

Author(s):

Xiaoqin Zhao ◽

Min Liu ◽

Yong Chen ◽

Bo Hou ◽

Na Zhang ◽

...

Keyword(s):

Cathode Material ◽

Discharge Capacity ◽

High Performance ◽

Coulombic Efficiency ◽

Initial Discharge Capacity ◽

Capacity Retention ◽

Initial Discharge ◽

Lithium Sulfur Batteries ◽

Lithium Sulfur

L-Ti3C2 was prepared by exfoliating Ti3AlC2 in 40% HF. With sulfur-loaded L-Ti3C2 as cathodes, Li–S batteries deliver a high initial discharge capacity of 1291 mA h g−1, an excellent capacity retention of 970 mA h g−1 and coulombic efficiency of 99% after 100 cycles.

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Graphene/Sulfur Nanocomposite for High Performance Lithium-Sulfur Batteries

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.936.369 ◽

2014 ◽

Vol 936 ◽

pp. 369-373 ◽

Cited By ~ 2

Author(s):

Shao Wu Ma ◽

Dong Lin Zhao ◽

Ning Na Yao ◽

Li Xu

Keyword(s):

High Performance ◽

High Surface ◽

High Surface Area ◽

Reversible Capacity ◽

Graphene Sheets ◽

X Ray Diffraction ◽

Electrochemical Testing ◽

Lithium Sulfur Batteries ◽

Testing Techniques ◽

Lithium Sulfur

The graphene/sulfur nanocomposite has been synthesized by heating a mixture of graphene sheets and elemental sulfur. The morphology, structure and electrochemical performance of graphene/sulfur nanocomposite as cathode material for lithium-sulfur batteries were systematically investigated by field-emission scanning electron microscope, X-ray diffraction and a variety of electrochemical testing techniques. The graphene/sulfur nanocomposite cathodes display a high reversible capacity of 800-1200 mAh g-1, and stable cycling for more than 100 deep cycles at 0.1 C. The graphene sheets have good conductivity and an extremely high surface area, and provide a robust electron transport network. The graphene network also accommodates the volume change of the electrode during the Li-S electrochemical reaction.

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