Graphene-enveloped sulfur in a one pot reaction: a cathode with good coulombic efficiency and high practical sulfur content.
Chem Commun (Camb)
; 48(9): 1233-5, 2012 Jan 30.
Article
em En
| MEDLINE
| ID: mdl-22179052
ABSTRACT
Graphene-sulfur composites with sulfur fractions as high as 87 wt% are prepared using a simple one-pot, scalable method. The graphene envelops the sulfur particles, providing a conductive shrink-wrap for electron transport. These materials are efficient cathodes for Li-S batteries, yielding 93% coulombic efficiency over 50 cycles with good capacity.
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MEDLINE
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En
Ano de publicação:
2012
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Article