Abstract
The high-energy lithium/sulfur (Li/S) battery has become a very popular topic of research in recent years due to its high theoretical capacity of 1672 mAh/g. However, the polysulfide shuttle effect remains of great concern with a great number of publications dedicated to its mitigation. In this contribution, a three-dimensional (3D) reduced graphene oxide/activated carbon (RGO/AC) film, synthesized by a simple hydrothermal method and convenient mechanical pressing, is sandwiched between the separator and the sulfur-based cathode, acting as a functional interlayer to capture and trap polysulfide species. Consequently, the Li/S cell with this interlayer shows an impressive initial discharge capacity of 1078 mAh/g and a reversible capacity of 655 mAh/g even after 100 cycles. The RGO/AC interlayer impedes the movement of polysulfide while providing unimpeded channels for lithium ion mass transfer. Therefore, the RGO/AC interlayer with a well-designed structure represents strong potential for high-performance Li/S batteries.
| Original language | English |
|---|---|
| Journal | Journal of Energy Chemistry |
| DOIs | |
| Publication status | Accepted/In press - 2017 |
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Keywords
- Functional interlayer
- Lithium/sulfur battery
- Reduced graphene oxide/activated carbon composite
- Shuttle effect
ASJC Scopus subject areas
- Fuel Technology
- Energy Engineering and Power Technology
- Energy (miscellaneous)
- Electrochemistry
Cite this
Enhanced cycle performance of Li/S battery with the reduced graphene oxide/activated carbon functional interlayer. / Li, Haipeng; Sun, Liancheng; Zhang, Yongguang; Tan, Taizhe; Wang, Gongkai; Bakenov, Zhumabay.
In: Journal of Energy Chemistry, 2017.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Enhanced cycle performance of Li/S battery with the reduced graphene oxide/activated carbon functional interlayer
AU - Li, Haipeng
AU - Sun, Liancheng
AU - Zhang, Yongguang
AU - Tan, Taizhe
AU - Wang, Gongkai
AU - Bakenov, Zhumabay
PY - 2017
Y1 - 2017
N2 - The high-energy lithium/sulfur (Li/S) battery has become a very popular topic of research in recent years due to its high theoretical capacity of 1672 mAh/g. However, the polysulfide shuttle effect remains of great concern with a great number of publications dedicated to its mitigation. In this contribution, a three-dimensional (3D) reduced graphene oxide/activated carbon (RGO/AC) film, synthesized by a simple hydrothermal method and convenient mechanical pressing, is sandwiched between the separator and the sulfur-based cathode, acting as a functional interlayer to capture and trap polysulfide species. Consequently, the Li/S cell with this interlayer shows an impressive initial discharge capacity of 1078 mAh/g and a reversible capacity of 655 mAh/g even after 100 cycles. The RGO/AC interlayer impedes the movement of polysulfide while providing unimpeded channels for lithium ion mass transfer. Therefore, the RGO/AC interlayer with a well-designed structure represents strong potential for high-performance Li/S batteries.
AB - The high-energy lithium/sulfur (Li/S) battery has become a very popular topic of research in recent years due to its high theoretical capacity of 1672 mAh/g. However, the polysulfide shuttle effect remains of great concern with a great number of publications dedicated to its mitigation. In this contribution, a three-dimensional (3D) reduced graphene oxide/activated carbon (RGO/AC) film, synthesized by a simple hydrothermal method and convenient mechanical pressing, is sandwiched between the separator and the sulfur-based cathode, acting as a functional interlayer to capture and trap polysulfide species. Consequently, the Li/S cell with this interlayer shows an impressive initial discharge capacity of 1078 mAh/g and a reversible capacity of 655 mAh/g even after 100 cycles. The RGO/AC interlayer impedes the movement of polysulfide while providing unimpeded channels for lithium ion mass transfer. Therefore, the RGO/AC interlayer with a well-designed structure represents strong potential for high-performance Li/S batteries.
KW - Functional interlayer
KW - Lithium/sulfur battery
KW - Reduced graphene oxide/activated carbon composite
KW - Shuttle effect
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UR - http://www.scopus.com/inward/citedby.url?scp=85029870049&partnerID=8YFLogxK
U2 - 10.1016/j.jechem.2017.09.009
DO - 10.1016/j.jechem.2017.09.009
M3 - Article
JO - Journal of Energy Chemistry
JF - Journal of Energy Chemistry
SN - 2095-4956
ER -