Novel N-doped carbon nanotubes impregnated Mn spheres with polydopamine coating as an efficient polysulfide immobilizer for Li-S batteries
Lithium-sulfur (Li-S) batteries are one of the most promising energy storage and conversion devices due to the high theoretical capacity and cost-effectiveness of sulfur. However, they still suffer from sluggish redox kinetics and the shuttle effect caused by complex polysulfides. In this work, grap...
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KeAi Communications Co. Ltd.
2024-11-01
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| Series: | Materials Reports: Energy |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666935824000715 |
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| author | Han Wang Sidra Jamil Muhammad Fasehullah Shujuan Bao Yi Li Maowen Xu |
| author_facet | Han Wang Sidra Jamil Muhammad Fasehullah Shujuan Bao Yi Li Maowen Xu |
| author_sort | Han Wang |
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| description | Lithium-sulfur (Li-S) batteries are one of the most promising energy storage and conversion devices due to the high theoretical capacity and cost-effectiveness of sulfur. However, they still suffer from sluggish redox kinetics and the shuttle effect caused by complex polysulfides. In this work, graphitic carbon nitride (g-C3N4) is utilized as a template and further hydrothermally treated with an Mn source and glucose. The pyrolysis of g-C3N4 gives rise to N-doped carbon nanotubes, producing abundant sites for physical confinement and chemical adsorption of polysulfides, while glucose carbonization brings forth amorphous carbon and Mn source produces metal spheres. Afterward, polydopamine (PDA) induces N-doped carbon coating and promotes interface connection as well as electron immigration. This synergistic design possesses a high surface area of micropores and mesopores to aggregate sulfur and accelerate redox kinetics. As a result, the N-doped carbon nanotube with Mn spheres and PDA coating@sulfur (CN/Mn-PDA@S) exhibits a high reversible capacity of 813.5 mAh g−1 at 1 C with a decay rate of 0.064% per cycle and remarkable capacity retention at 2 C with rate performance up to 4 C. Therefore, the novel design of N-doped carbon nanotubes with Mn spheres and PDA coating serves as an efficient polysulfide immobilizer for Li-S batteries. |
| format | Article |
| id | doaj-art-d899d4bb75934e219b95dadffb1e07b1 |
| institution | DOAJ |
| issn | 2666-9358 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | KeAi Communications Co. Ltd. |
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| series | Materials Reports: Energy |
| spelling | doaj-art-d899d4bb75934e219b95dadffb1e07b12025-08-20T02:49:08ZengKeAi Communications Co. Ltd.Materials Reports: Energy2666-93582024-11-014410029810.1016/j.matre.2024.100298Novel N-doped carbon nanotubes impregnated Mn spheres with polydopamine coating as an efficient polysulfide immobilizer for Li-S batteriesHan Wang0Sidra Jamil1Muhammad Fasehullah2Shujuan Bao3Yi Li4Maowen Xu5Chongqing Key Laboratory of Battery Materials and Technology, School of Materials and Energy, Southwest University, Chongqing, 400715, ChinaChongqing Key Laboratory of Battery Materials and Technology, School of Materials and Energy, Southwest University, Chongqing, 400715, China; Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, 82 Wood Lane, W12 0BZ, UKState Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing, 400044, ChinaChongqing Key Laboratory of Battery Materials and Technology, School of Materials and Energy, Southwest University, Chongqing, 400715, ChinaChongqing Key Laboratory of Battery Materials and Technology, School of Materials and Energy, Southwest University, Chongqing, 400715, China; Institute of Condensed Matter and Nanosciences, Molecular Chemistry, Materials and Catalysis, Université Catholique de Louvain, Louvain-la-Neuve, B-1348, Belgium; Corresponding author. Chongqing Key Laboratory of Battery Materials and Technology, School of Materials and Energy, Southwest University, Chongqing 400715, China.Chongqing Key Laboratory of Battery Materials and Technology, School of Materials and Energy, Southwest University, Chongqing, 400715, China; Corresponding author.Lithium-sulfur (Li-S) batteries are one of the most promising energy storage and conversion devices due to the high theoretical capacity and cost-effectiveness of sulfur. However, they still suffer from sluggish redox kinetics and the shuttle effect caused by complex polysulfides. In this work, graphitic carbon nitride (g-C3N4) is utilized as a template and further hydrothermally treated with an Mn source and glucose. The pyrolysis of g-C3N4 gives rise to N-doped carbon nanotubes, producing abundant sites for physical confinement and chemical adsorption of polysulfides, while glucose carbonization brings forth amorphous carbon and Mn source produces metal spheres. Afterward, polydopamine (PDA) induces N-doped carbon coating and promotes interface connection as well as electron immigration. This synergistic design possesses a high surface area of micropores and mesopores to aggregate sulfur and accelerate redox kinetics. As a result, the N-doped carbon nanotube with Mn spheres and PDA coating@sulfur (CN/Mn-PDA@S) exhibits a high reversible capacity of 813.5 mAh g−1 at 1 C with a decay rate of 0.064% per cycle and remarkable capacity retention at 2 C with rate performance up to 4 C. Therefore, the novel design of N-doped carbon nanotubes with Mn spheres and PDA coating serves as an efficient polysulfide immobilizer for Li-S batteries.http://www.sciencedirect.com/science/article/pii/S2666935824000715Li-S batteriesG-C3N4PDAN-dopedMn spheres |
| spellingShingle | Han Wang Sidra Jamil Muhammad Fasehullah Shujuan Bao Yi Li Maowen Xu Novel N-doped carbon nanotubes impregnated Mn spheres with polydopamine coating as an efficient polysulfide immobilizer for Li-S batteries Materials Reports: Energy Li-S batteries G-C3N4 PDA N-doped Mn spheres |
| title | Novel N-doped carbon nanotubes impregnated Mn spheres with polydopamine coating as an efficient polysulfide immobilizer for Li-S batteries |
| title_full | Novel N-doped carbon nanotubes impregnated Mn spheres with polydopamine coating as an efficient polysulfide immobilizer for Li-S batteries |
| title_fullStr | Novel N-doped carbon nanotubes impregnated Mn spheres with polydopamine coating as an efficient polysulfide immobilizer for Li-S batteries |
| title_full_unstemmed | Novel N-doped carbon nanotubes impregnated Mn spheres with polydopamine coating as an efficient polysulfide immobilizer for Li-S batteries |
| title_short | Novel N-doped carbon nanotubes impregnated Mn spheres with polydopamine coating as an efficient polysulfide immobilizer for Li-S batteries |
| title_sort | novel n doped carbon nanotubes impregnated mn spheres with polydopamine coating as an efficient polysulfide immobilizer for li s batteries |
| topic | Li-S batteries G-C3N4 PDA N-doped Mn spheres |
| url | http://www.sciencedirect.com/science/article/pii/S2666935824000715 |
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