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Title: Method of preparing graphene-sulfur nanocomposites for rechargeable lithium-sulfur battery electrodes

A method of preparing a graphene-sulfur nanocomposite for a cathode in a rechargeable lithium-sulfur battery comprising thermally expanding graphite oxide to yield graphene layers, mixing the graphene layers with a first solution comprising sulfur and carbon disulfide, evaporating the carbon disulfide to yield a solid nanocomposite, and grinding the solid nanocomposite to yield the graphene-sulfur nanocomposite. Rechargeable-lithium-sulfur batteries having a cathode that includes a graphene-sulfur nanocomposite can exhibit improved characteristics. The graphene-sulfur nanocomposite can be characterized by graphene sheets with particles of sulfur adsorbed to the graphene sheets. The sulfur particles have an average diameter of less than 50 nm.
Inventors:
; ; ; ;
Issue Date:
OSTI Identifier:
1177548
Assignee:
Battelle Memorial Institute (Richland, WA) ORO
Patent Number(s):
8,999,574
Application Number:
14/225,561
Contract Number:
AC05-76RL01830
Resource Relation:
Patent File Date: 2014 Mar 26
Research Org:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 25 ENERGY STORAGE

Works referenced in this record:

The preparation of nano-sulfur/MWCNTs and its electrochemical performance
journal, November 2010

Preparation of nano-structured LiFePO4/graphene composites by co-precipitation method
journal, January 2010

A highly ordered nanostructured carbon–sulphur cathode for lithium–sulphur batteries
journal, May 2009
  • Ji, Xiulei; Lee, Kyu Tae; Nazar, Linda F.
  • Nature Materials, Vol. 8, Issue 6, p. 500-506
  • DOI: 10.1038/nmat2460

Ternary Self-Assembly of Ordered Metal Oxide−Graphene Nanocomposites for Electrochemical Energy Storage
journal, March 2010
  • Wang, Donghai; Kou, Rong; Choi, Daiwon
  • ACS Nano, Vol. 4, Issue 3, p. 1587-1595
  • DOI: 10.1021/nn901819n

Self-Assembled TiO 2 –Graphene Hybrid Nanostructures for Enhanced Li-Ion Insertion
journal, March 2009
  • Wang, Donghai; Choi, Daiwon; Li, Juan
  • ACS Nano, Vol. 3, Issue 4, p. 907-914
  • DOI: 10.1021/nn900150y

Improvement of cycle property of sulfur-coated multi-walled carbon nanotubes composite cathode for lithium/sulfur batteries
journal, April 2009

Novel nanosized adsorbing sulfur composite cathode materials for the advanced secondary lithium batteries
journal, January 2006