Electrostatic self-assembly of graphene oxide wrapped sulfur particles for lithium–sulfur batteries

Journal Article · Wed Apr 15 04:00:00 EDT 2015 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2014.12.036· OSTI ID:22475709

Wu, Haiwei; Huang, Ying; Zong, Meng; Ding, Xiao; Ding, Juan; Sun, Xu

Highlights: • Researched graphene oxide wrapped sulfur particles for lithium–sulfur batteries. • New approach for core–shell GO/S composites by electrostatic self-assembly method. • Both core–shell structure and the GO support help to retard the diffusion of polysulfides during the electrochemical cycling process of GO/S cathode. - Abstract: A novel graphene oxide (GO)/sulfur (S) composite is developed by electrostatic self-assembly method. Remarkably, the core–shell structure of the composite and the GO support helps to retard the diffusion of polysulfides during the electrochemical cycling process. The GO/sulfur cathode presents enhanced cycling ability. Specific discharge capacities up to 494.7 mAh g{sup −1} over 200 cycles at 0.1 C is achieved with enhanced columbic efficiency around 95%, representing a good cathode material for lithium–sulfur batteries.

• OSTI ID: 22475709
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 64; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
CATHODES
DIFFUSION
ELECTRIC BATTERIES
ELECTROCHEMISTRY
GRAPHENE
LITHIUM
MICROSTRUCTURE
NANOCOMPOSITES
OXIDES
SULFIDES
SULFUR