Three-Dimensionally Hierarchical Graphene Based Aerogel Encapsulated Sulfur as Cathode for Lithium/Sulfur Batteries
A simple and effective method was developed to obtain the electrode for lithium/sulfur (Li/S) batteries with high specific capacity and cycling durability via adopting an interconnected sulfur/activated carbon/graphene (reduced graphene oxide) aerogel (S/AC/GA) cathode architecture. The AC/GA compos...
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MDPI AG
2018-01-01
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| Series: | Nanomaterials |
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| Online Access: | http://www.mdpi.com/2079-4991/8/2/69 |
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| author | Haipeng Li Liancheng Sun Zhuo Wang Yongguang Zhang Taizhe Tan Gongkai Wang Zhumabay Bakenov |
| author_facet | Haipeng Li Liancheng Sun Zhuo Wang Yongguang Zhang Taizhe Tan Gongkai Wang Zhumabay Bakenov |
| author_sort | Haipeng Li |
| collection | DOAJ |
| description | A simple and effective method was developed to obtain the electrode for lithium/sulfur (Li/S) batteries with high specific capacity and cycling durability via adopting an interconnected sulfur/activated carbon/graphene (reduced graphene oxide) aerogel (S/AC/GA) cathode architecture. The AC/GA composite with a well-defined interconnected conductive network was prepared by a reduction-induced self-assembly process, which allows for obtaining compact and porous structures. During this process, reduced graphene oxide (RGO) was formed, and due to the presence of oxygen-containing functional groups on its surface, it not only improves the electronic conductivity of the cathode but also effectively inhibits the polysulfides dissolution and shuttle. The introduced activated carbon allowed for lateral and vertical connection between individual graphene sheets, completing the formation of a stable three-dimensionally (3D) interconnected graphene framework. Moreover, a high specific surface area and 3D interconnected porous structure efficiently hosts a higher amount of active sulfur material, about 65 wt %. The designed S/AC/GA composite electrodes deliver an initial capacity of 1159 mAh g−1 at 0.1 C and can retain a capacity of 765 mAh g−1 after 100 cycles in potential range from 1 V to 3 V. |
| first_indexed | 2024-04-12T11:45:21Z |
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| id | doaj.art-a750e783ec324a0c93cb85e03391beb1 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-04-12T11:45:21Z |
| publishDate | 2018-01-01 |
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| series | Nanomaterials |
| spelling | doaj.art-a750e783ec324a0c93cb85e03391beb12022-12-22T03:34:22ZengMDPI AGNanomaterials2079-49912018-01-01826910.3390/nano8020069nano8020069Three-Dimensionally Hierarchical Graphene Based Aerogel Encapsulated Sulfur as Cathode for Lithium/Sulfur BatteriesHaipeng Li0Liancheng Sun1Zhuo Wang2Yongguang Zhang3Taizhe Tan4Gongkai Wang5Zhumabay Bakenov6School of Materials Science & Engineering, Research Institute for Energy Equipment Materials, Hebei University of Technology, Tianjin 300130, ChinaSchool of Materials Science & Engineering, Research Institute for Energy Equipment Materials, Hebei University of Technology, Tianjin 300130, ChinaSchool of Materials Science & Engineering, Research Institute for Energy Equipment Materials, Hebei University of Technology, Tianjin 300130, ChinaSchool of Materials Science & Engineering, Research Institute for Energy Equipment Materials, Hebei University of Technology, Tianjin 300130, ChinaSynergy Innovation Institute of GDUT, Heyuan 517000, ChinaSchool of Materials Science & Engineering, Research Institute for Energy Equipment Materials, Hebei University of Technology, Tianjin 300130, ChinaNational Laboratory Astana, Nazarbayev University, Institute of Batteries LLC, 53 Kabanbay Batyr Avenue, Astana 010000, KazakhstanA simple and effective method was developed to obtain the electrode for lithium/sulfur (Li/S) batteries with high specific capacity and cycling durability via adopting an interconnected sulfur/activated carbon/graphene (reduced graphene oxide) aerogel (S/AC/GA) cathode architecture. The AC/GA composite with a well-defined interconnected conductive network was prepared by a reduction-induced self-assembly process, which allows for obtaining compact and porous structures. During this process, reduced graphene oxide (RGO) was formed, and due to the presence of oxygen-containing functional groups on its surface, it not only improves the electronic conductivity of the cathode but also effectively inhibits the polysulfides dissolution and shuttle. The introduced activated carbon allowed for lateral and vertical connection between individual graphene sheets, completing the formation of a stable three-dimensionally (3D) interconnected graphene framework. Moreover, a high specific surface area and 3D interconnected porous structure efficiently hosts a higher amount of active sulfur material, about 65 wt %. The designed S/AC/GA composite electrodes deliver an initial capacity of 1159 mAh g−1 at 0.1 C and can retain a capacity of 765 mAh g−1 after 100 cycles in potential range from 1 V to 3 V.http://www.mdpi.com/2079-4991/8/2/69lithium/sulfur batterycathodesulfur/activated carbon/graphene aerogel compositereduced graphene oxideelectrochemical performance |
| spellingShingle | Haipeng Li Liancheng Sun Zhuo Wang Yongguang Zhang Taizhe Tan Gongkai Wang Zhumabay Bakenov Three-Dimensionally Hierarchical Graphene Based Aerogel Encapsulated Sulfur as Cathode for Lithium/Sulfur Batteries Nanomaterials lithium/sulfur battery cathode sulfur/activated carbon/graphene aerogel composite reduced graphene oxide electrochemical performance |
| title | Three-Dimensionally Hierarchical Graphene Based Aerogel Encapsulated Sulfur as Cathode for Lithium/Sulfur Batteries |
| title_full | Three-Dimensionally Hierarchical Graphene Based Aerogel Encapsulated Sulfur as Cathode for Lithium/Sulfur Batteries |
| title_fullStr | Three-Dimensionally Hierarchical Graphene Based Aerogel Encapsulated Sulfur as Cathode for Lithium/Sulfur Batteries |
| title_full_unstemmed | Three-Dimensionally Hierarchical Graphene Based Aerogel Encapsulated Sulfur as Cathode for Lithium/Sulfur Batteries |
| title_short | Three-Dimensionally Hierarchical Graphene Based Aerogel Encapsulated Sulfur as Cathode for Lithium/Sulfur Batteries |
| title_sort | three dimensionally hierarchical graphene based aerogel encapsulated sulfur as cathode for lithium sulfur batteries |
| topic | lithium/sulfur battery cathode sulfur/activated carbon/graphene aerogel composite reduced graphene oxide electrochemical performance |
| url | http://www.mdpi.com/2079-4991/8/2/69 |
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