Three-Dimensional Hierarchical Porous Structure of PPy/Porous-Graphene to Encapsulate Polysulfides for Lithium/Sulfur Batteries
Herein, we demonstrate the fabrication of a three-dimensional (3D) polypyrrole-coated-porous 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...
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| Format: | Article |
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MDPI AG
2018-08-01
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| Series: | Nanomaterials |
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| Online Access: | http://www.mdpi.com/2079-4991/8/8/606 |
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| author | Yongguang Zhang Zhumabay Bakenov Taizhe Tan Jin Huang |
| author_facet | Yongguang Zhang Zhumabay Bakenov Taizhe Tan Jin Huang |
| author_sort | Yongguang Zhang |
| collection | DOAJ |
| description | Herein, we demonstrate the fabrication of a three-dimensional (3D) polypyrrole-coated-porous 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. |
| first_indexed | 2024-04-12T16:54:11Z |
| format | Article |
| id | doaj.art-dcdd1d71f1264be8a7b651b70e1d9696 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-04-12T16:54:11Z |
| publishDate | 2018-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-dcdd1d71f1264be8a7b651b70e1d96962022-12-22T03:24:18ZengMDPI AGNanomaterials2079-49912018-08-018860610.3390/nano8080606nano8080606Three-Dimensional Hierarchical Porous Structure of PPy/Porous-Graphene to Encapsulate Polysulfides for Lithium/Sulfur BatteriesYongguang Zhang0Zhumabay Bakenov1Taizhe Tan2Jin Huang3School of Materials and Energy, Synergy Innovation Institute of GDUT (Heyuan), Guangdong University of Technology, Guangzhou 510006, ChinaInstitute of Batteries LLC, National Laboratory Astana, School of Engineering, Nazarbayev University, 53 Kabanbay Batyr Avenue, Astana 010000, KazakhstanSchool of Materials and Energy, Synergy Innovation Institute of GDUT (Heyuan), Guangdong University of Technology, Guangzhou 510006, ChinaSchool of Materials and Energy, Synergy Innovation Institute of GDUT (Heyuan), Guangdong University of Technology, Guangzhou 510006, ChinaHerein, we demonstrate the fabrication of a three-dimensional (3D) polypyrrole-coated-porous 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.http://www.mdpi.com/2079-4991/8/8/606lithium/sulfur batteryhierarchical 3D porous structuresulfur/polypyrrole/porous graphene composite |
| spellingShingle | Yongguang Zhang Zhumabay Bakenov Taizhe Tan Jin Huang Three-Dimensional Hierarchical Porous Structure of PPy/Porous-Graphene to Encapsulate Polysulfides for Lithium/Sulfur Batteries Nanomaterials lithium/sulfur battery hierarchical 3D porous structure sulfur/polypyrrole/porous graphene composite |
| title | Three-Dimensional Hierarchical Porous Structure of PPy/Porous-Graphene to Encapsulate Polysulfides for Lithium/Sulfur Batteries |
| title_full | Three-Dimensional Hierarchical Porous Structure of PPy/Porous-Graphene to Encapsulate Polysulfides for Lithium/Sulfur Batteries |
| title_fullStr | Three-Dimensional Hierarchical Porous Structure of PPy/Porous-Graphene to Encapsulate Polysulfides for Lithium/Sulfur Batteries |
| title_full_unstemmed | Three-Dimensional Hierarchical Porous Structure of PPy/Porous-Graphene to Encapsulate Polysulfides for Lithium/Sulfur Batteries |
| title_short | Three-Dimensional Hierarchical Porous Structure of PPy/Porous-Graphene to Encapsulate Polysulfides for Lithium/Sulfur Batteries |
| title_sort | three dimensional hierarchical porous structure of ppy porous graphene to encapsulate polysulfides for lithium sulfur batteries |
| topic | lithium/sulfur battery hierarchical 3D porous structure sulfur/polypyrrole/porous graphene composite |
| url | http://www.mdpi.com/2079-4991/8/8/606 |
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