Graphene/Sulfur@Graphene Composite Structure Material for a Lithium-Sulfur Battery Cathode
Graphene/sulfur@graphene composite structure as a cathode material is synthesized with a facile method. Graphene can provide a more efficient conductive network for sulfur and improve the coulombic efficiency of the battery. On the other hand, it may also show the anchoring effect on sulfur, which r...
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| Veröffentlicht in: | Journal of nanomaterials 2019-01, Vol.2019 (2019), p.1-10 |
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| container_issue | 2019 |
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| container_title | Journal of nanomaterials |
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| creator | Wang, Heng Yang, Zhiyun Xiao, Jianrong Tao, Zengren |
| description | Graphene/sulfur@graphene composite structure as a cathode material is synthesized with a facile method. Graphene can provide a more efficient conductive network for sulfur and improve the coulombic efficiency of the battery. On the other hand, it may also show the anchoring effect on sulfur, which reduces the loss of sulfur and improves the cycling performance of the battery. Due to the unique structure, the initial discharge capacity of a battery assembled with this structure could reach 1036 mAh g−1 at 0.1 C, and its reversible capacity of 619 mAh g−1 was retained after 200 cycles with a low fading rate of 0.2% per cycle. The battery could hold a discharge capacity of 501 mAh g−1 after 200 cycles at 0.5 C. Thus, the electrochemical performance improved because of the reduction of sulfur loss through polysulfide accumulation at the cathode. |
| doi_str_mv | 10.1155/2019/6480236 |
| format | Article |
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Graphene can provide a more efficient conductive network for sulfur and improve the coulombic efficiency of the battery. On the other hand, it may also show the anchoring effect on sulfur, which reduces the loss of sulfur and improves the cycling performance of the battery. Due to the unique structure, the initial discharge capacity of a battery assembled with this structure could reach 1036 mAh g−1 at 0.1 C, and its reversible capacity of 619 mAh g−1 was retained after 200 cycles with a low fading rate of 0.2% per cycle. The battery could hold a discharge capacity of 501 mAh g−1 after 200 cycles at 0.5 C. Thus, the electrochemical performance improved because of the reduction of sulfur loss through polysulfide accumulation at the cathode.</description><identifier>ISSN: 1687-4110</identifier><identifier>EISSN: 1687-4129</identifier><identifier>DOI: 10.1155/2019/6480236</identifier><language>eng</language><publisher>Cairo, Egypt: Hindawi Publishing Corporation</publisher><subject>Aluminum ; Anchoring ; Batteries ; Battery cycles ; Carbon ; Cathodes ; Composite materials ; Composite structures ; Discharge ; Electrochemical analysis ; Electrode materials ; Electrodes ; Electrolytes ; Energy ; Graphene ; Lithium ; Lithium sulfur batteries ; Nanomaterials ; Sulfur</subject><ispartof>Journal of nanomaterials, 2019-01, Vol.2019 (2019), p.1-10</ispartof><rights>Copyright © 2019 Zengren Tao et al.</rights><rights>Copyright © 2019 Zengren Tao et al. 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Graphene can provide a more efficient conductive network for sulfur and improve the coulombic efficiency of the battery. On the other hand, it may also show the anchoring effect on sulfur, which reduces the loss of sulfur and improves the cycling performance of the battery. Due to the unique structure, the initial discharge capacity of a battery assembled with this structure could reach 1036 mAh g−1 at 0.1 C, and its reversible capacity of 619 mAh g−1 was retained after 200 cycles with a low fading rate of 0.2% per cycle. The battery could hold a discharge capacity of 501 mAh g−1 after 200 cycles at 0.5 C. 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| subjects | Aluminum Anchoring Batteries Battery cycles Carbon Cathodes Composite materials Composite structures Discharge Electrochemical analysis Electrode materials Electrodes Electrolytes Energy Graphene Lithium Lithium sulfur batteries Nanomaterials Sulfur |
| title | Graphene/Sulfur@Graphene Composite Structure Material for a Lithium-Sulfur Battery Cathode |
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