Graphene-wrapped sulfur particles as a rechargeable lithium-sulfur battery cathode material with high capacity and cycling stability.

@article{Wang2011GraphenewrappedSP,
  title={Graphene-wrapped sulfur particles as a rechargeable lithium-sulfur battery cathode material with high capacity and cycling stability.},
  author={Hailiang Wang and Yuan Yang and Yongye Liang and Joshua Tucker Robinson and Yanguang Li and Ariel Jackson and Yi Cui and H. Dai},
  journal={Nano letters},
  year={2011},
  volume={11 7},
  pages={
          2644-7
        }
}
We report the synthesis of a graphene-sulfur composite material by wrapping poly(ethylene glycol) (PEG) coated submicrometer sulfur particles with mildly oxidized graphene oxide sheets decorated by carbon black nanoparticles. The PEG and graphene coating layers are important to accommodating volume expansion of the coated sulfur particles during discharge, trapping soluble polysulfide intermediates, and rendering the sulfur particles electrically conducting. The resulting graphene-sulfur… 

Figures from this paper

Sulfur@graphene oxide core–shell particles as a rechargeable lithium–sulfur battery cathode material with high cycling stability and capacity

Sulfur@GO core–shell composites were prepared by the self-assembly of sulfur particles stabilized by a cationic surfactant and anionic graphene oxide nanosheets through electrostatic interaction. Due

Mesoporous graphene paper immobilised sulfur as a flexible electrode for lithium–sulfur batteries

Free-standing flexible mesoporous graphene–sulfur nanocomposite electrodes have been prepared by a sulfur vapor treatment approach. Amorphous sulfur homogeneously was distributed in the mesoporous

A scalable graphene sulfur composite synthesis for rechargeable lithium batteries with good capacity and excellent columbic efficiency.

TLDR
It is found that graphene oxide (GO) with a porous structure offers flexible confinement function that helps prevent the loss of active materials, thus extending the cycling life of the electrode, and reduced graphene oxide provides a conductive network surrounding the sulfur particles, which facilitates both electron transport and ion transportation.

Superior electrochemical performance of sulfur/graphene nanocomposite material for high-capacity lithium-sulfur batteries.

TLDR
The sulfur/graphene nanocomposite material has been prepared by incorporating sulfur into the graphene frameworks through a melting process and exhibits a super-high lithium-storage capacity and a satisfactory cycling performance in lithium-sulfur cells.

SiO2-coated sulfur particles with mildly reduced graphene oxide as a cathode material for lithium-sulfur batteries.

TLDR
With the addition of mildly reduced graphene oxide (mrGO), SCSPs demonstrate even greater cycling stability, maintaining over 700 mA h g(-1) after the 50(th) cycle.

Enhanced cycling stability of lithium sulfur batteries using sulfur-polyaniline-graphene nanoribbon composite cathodes.

TLDR
A hierarchical nanocomposite material of graphene nanoribbons combined with polyaniline and sulfur using an inexpensive, simple method has been developed that has a good rate performance and excellent cycling stability.

Effect of Graphene on Sulfur/Polyacrylonitrile Nanocomposite Cathode in High Performance Lithium/Sulfur Batteries

A novel sulfur/polyacrylonitrile/graphene nanocomposite has been synthesized via a simple combination of ballmilling with low temperature heat-treatment. The nanocomposite was examined as a cathode

Three-Dimensional Porous Graphene Aerogel Cathode with High Sulfur Loading and Embedded TiO2 Nanoparticles for Advanced Lithium-Sulfur Batteries.

TLDR
The conductive graphene aerogel framework ameliorates ion/electron transfer while accommodating the volume expansion induced during discharge, and TiO2 nanoparticles play an important role in restricting the dissolution of polysulfides by chemical bonds with sulfur.
...

References

SHOWING 1-10 OF 33 REFERENCES

Hierarchically Structured Sulfur/Carbon Nanocomposite Material for High-Energy Lithium Battery

We report herein a hierarchically structured sulfur−carbon (S/C) nanocomposite material as the high surface-area cathode for rechargeable lithium batteries. A porous carbon with a uniform

Enhancement of long stability of sulfur cathode by encapsulating sulfur into micropores of carbon spheres

To enhance the long stability of sulfur cathode for a high energy lithium–sulfur battery system, a sulfur–carbon sphere composite was prepared by encapsulating sulfur into micropores of carbon

SnO2/graphene composite with high lithium storage capability for lithium rechargeable batteries

SnO2/graphene nanocomposites have been fabricated by a simple chemical method. In the fabrication process, the control of surface charge causes echinoid-like SnO2 nanoparticles to be formed and

Self-assembled TiO2-graphene hybrid nanostructures for enhanced Li-ion insertion.

TLDR
The hybrid materials showed significantly enhanced Li-ion insertion/extraction in TiO2, and the specific capacity was more than doubled at high charge rates, as compared with the pureTiO2 phase.

Mn3O4-graphene hybrid as a high-capacity anode material for lithium ion batteries.

TLDR
The two-step solution-phase reactions to form hybrid materials of Mn(3)O(4) nanoparticles on reduced graphene oxide (RGO) sheets for lithium ion battery applications should offer a new technique for the design and synthesis of battery electrodes based on highly insulating materials.

New nanostructured Li2S/silicon rechargeable battery with high specific energy.

TLDR
A novel lithium metal-free battery consisting of a Li(2)S/mesoporous carbon composite cathode and a silicon nanowire anode that yields a theoretical specific energy of 1550 Wh kg(-1), which is four times that of the theoretical specificEnergy of existing lithium-ion batteries based on LiCoO( 2) cathodes and graphite anodes.

On the Surface Chemical Aspects of Very High Energy Density, Rechargeable Li–Sulfur Batteries

Li(metal)-sulfur (Li-S) systems are among the rechargeable batteries of the highest possible energy density due to the high capacity of both electrodes. The surface chemistry developed on Li

Ni(OH)2 nanoplates grown on graphene as advanced electrochemical pseudocapacitor materials.

TLDR
The results suggest the importance of rational design and synthesis of graphene-based nanocomposite materials for high-performance energy applications, particularly in supercapacitors with both high energy and power densities.

A highly ordered nanostructured carbon-sulphur cathode for lithium-sulphur batteries.

TLDR
The feasibility to approach high gravimetric capacities of the Li-S battery by creating highly ordered interwoven composites is reported, conceptually providing new opportunities for materials scientists for tailored design that can be extended to many different electrode materials.

Graphene Oxide-Assisted Dispersion of Pristine Multiwalled Carbon Nanotubes in Aqueous Media

Graphene oxide (GO) sheets, considered as “soft” two-dimensional macromolecules containing multiple aromatic regions and hydrophilic oxygen groups, can adsorb the pristine multiwalled carbon