Abstract
We report on a simple and facile synthesis route for the sulfur/graphene oxide composite via ultrasonic mixing of the nano-sulfur and graphene oxide aqueous suspensions followed by a low-temperature heat treatment. High-resolution transmission and scanning electronic microscopy observations revealed the formation of a highly porous structure consisting of sulfur with uniform graphene oxide coating on its surface. The resulting sulfur/graphene oxide (S/GO) composite exhibited high and stable specific discharge capacities of 591 mAh g-1 after 100 cycles at 0.1 C and good rate capability. This enhanced electrochemical performance could be attributed to the effective confining the polysulfides dissolution and accommodation of the volume changes during the Li-S electrochemical reaction by the functional groups on the graphene oxide coating layer. Furthermore, the highly developed porous structure of S/GO composite favors the enhanced ion transport and electrolyte diffusion.
| Original language | English |
|---|---|
| Pages (from-to) | 1047-1050 |
| Number of pages | 4 |
| Journal | Ionics |
| Volume | 20 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2014 |
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Keywords
- Graphene oxide
- Lithium/sulfur battery
- Nanostructured sulfur cathode
- Porous structure
ASJC Scopus subject areas
- Chemical Engineering(all)
- Engineering(all)
- Materials Science(all)
- Physics and Astronomy(all)
Cite this
A simple approach to synthesize nanosized sulfur/graphene oxide materials for high-performance lithium/sulfur batteries. / Zhang, Yongguang; Zhao, Yan; Bakenov, Zhumabay.
In: Ionics, Vol. 20, No. 7, 2014, p. 1047-1050.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A simple approach to synthesize nanosized sulfur/graphene oxide materials for high-performance lithium/sulfur batteries
AU - Zhang, Yongguang
AU - Zhao, Yan
AU - Bakenov, Zhumabay
PY - 2014
Y1 - 2014
N2 - We report on a simple and facile synthesis route for the sulfur/graphene oxide composite via ultrasonic mixing of the nano-sulfur and graphene oxide aqueous suspensions followed by a low-temperature heat treatment. High-resolution transmission and scanning electronic microscopy observations revealed the formation of a highly porous structure consisting of sulfur with uniform graphene oxide coating on its surface. The resulting sulfur/graphene oxide (S/GO) composite exhibited high and stable specific discharge capacities of 591 mAh g-1 after 100 cycles at 0.1 C and good rate capability. This enhanced electrochemical performance could be attributed to the effective confining the polysulfides dissolution and accommodation of the volume changes during the Li-S electrochemical reaction by the functional groups on the graphene oxide coating layer. Furthermore, the highly developed porous structure of S/GO composite favors the enhanced ion transport and electrolyte diffusion.
AB - We report on a simple and facile synthesis route for the sulfur/graphene oxide composite via ultrasonic mixing of the nano-sulfur and graphene oxide aqueous suspensions followed by a low-temperature heat treatment. High-resolution transmission and scanning electronic microscopy observations revealed the formation of a highly porous structure consisting of sulfur with uniform graphene oxide coating on its surface. The resulting sulfur/graphene oxide (S/GO) composite exhibited high and stable specific discharge capacities of 591 mAh g-1 after 100 cycles at 0.1 C and good rate capability. This enhanced electrochemical performance could be attributed to the effective confining the polysulfides dissolution and accommodation of the volume changes during the Li-S electrochemical reaction by the functional groups on the graphene oxide coating layer. Furthermore, the highly developed porous structure of S/GO composite favors the enhanced ion transport and electrolyte diffusion.
KW - Graphene oxide
KW - Lithium/sulfur battery
KW - Nanostructured sulfur cathode
KW - Porous structure
UR - http://www.scopus.com/inward/record.url?scp=84902358335&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84902358335&partnerID=8YFLogxK
U2 - 10.1007/s11581-014-1165-5
DO - 10.1007/s11581-014-1165-5
M3 - Article
VL - 20
SP - 1047
EP - 1050
JO - Ionics
JF - Ionics
SN - 0947-7047
IS - 7
ER -