Abstract
Herein, we demonstrate the fabrication of a three-dimensional (3D) polypyrrole-coatedporous graphene (PPy/PG) composite through in-situ polymerization of pyrrole monomer on PG surface. The PPy/PG displays a 3D hierarchical porous structure and the resulting PPy/PG hybrid serves as a conductive trap to lithium polysulfides enhancing the electrochemical performances. Owing to the superior conductivity and peculiar structure, a high initial discharge capacity of 1020 mAh g-1 and the reversible capacity of 802 mAh g-1 over 200 cycles are obtained for the S/PPy/PG cathode at 0.1 C, remaining the remarkable cyclic stability. In addition, the S/PPy/PG cathodes demonstrate an excellent rate performance exhibiting 477 mAh g-1 at 2 C.
| Original language | English |
|---|---|
| Article number | 606 |
| Journal | Nanomaterials |
| Volume | 8 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Aug 9 2018 |
Fingerprint
Keywords
- Hierarchical 3D porous structure
- Lithium/sulfur battery
- Sulfur/polypyrrole/porous graphene composite
ASJC Scopus subject areas
- Chemical Engineering(all)
- Materials Science(all)
Cite this
Three-dimensional hierarchical porous structure of PPy/porous-graphene to encapsulate polysulfides for lithium/sulfur batteries. / Zhang, Yongguang; Bakenov, Zhumabay; Tan, Taizhe; Huang, Jin.
In: Nanomaterials, Vol. 8, No. 8, 606, 09.08.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Three-dimensional hierarchical porous structure of PPy/porous-graphene to encapsulate polysulfides for lithium/sulfur batteries
AU - Zhang, Yongguang
AU - Bakenov, Zhumabay
AU - Tan, Taizhe
AU - Huang, Jin
PY - 2018/8/9
Y1 - 2018/8/9
N2 - Herein, we demonstrate the fabrication of a three-dimensional (3D) polypyrrole-coatedporous graphene (PPy/PG) composite through in-situ polymerization of pyrrole monomer on PG surface. The PPy/PG displays a 3D hierarchical porous structure and the resulting PPy/PG hybrid serves as a conductive trap to lithium polysulfides enhancing the electrochemical performances. Owing to the superior conductivity and peculiar structure, a high initial discharge capacity of 1020 mAh g-1 and the reversible capacity of 802 mAh g-1 over 200 cycles are obtained for the S/PPy/PG cathode at 0.1 C, remaining the remarkable cyclic stability. In addition, the S/PPy/PG cathodes demonstrate an excellent rate performance exhibiting 477 mAh g-1 at 2 C.
AB - Herein, we demonstrate the fabrication of a three-dimensional (3D) polypyrrole-coatedporous graphene (PPy/PG) composite through in-situ polymerization of pyrrole monomer on PG surface. The PPy/PG displays a 3D hierarchical porous structure and the resulting PPy/PG hybrid serves as a conductive trap to lithium polysulfides enhancing the electrochemical performances. Owing to the superior conductivity and peculiar structure, a high initial discharge capacity of 1020 mAh g-1 and the reversible capacity of 802 mAh g-1 over 200 cycles are obtained for the S/PPy/PG cathode at 0.1 C, remaining the remarkable cyclic stability. In addition, the S/PPy/PG cathodes demonstrate an excellent rate performance exhibiting 477 mAh g-1 at 2 C.
KW - Hierarchical 3D porous structure
KW - Lithium/sulfur battery
KW - Sulfur/polypyrrole/porous graphene composite
UR - http://www.scopus.com/inward/record.url?scp=85051983176&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85051983176&partnerID=8YFLogxK
U2 - 10.3390/nano8080606
DO - 10.3390/nano8080606
M3 - Article
VL - 8
JO - Nanomaterials
JF - Nanomaterials
SN - 2079-4991
IS - 8
M1 - 606
ER -