{"title":"三维石墨烯纳米片交联核壳 FeS2@N、S 共掺多孔碳以提高锂/钠存储性能","authors":"Liang Chen, Lan-Yun Yang, Li-Ying Hu, Xu Liu, Chen-Xi Xu, Ying Liu, Wei Wang, Wen-Yuan Xu, Zhao-Hui Hou","doi":"10.1007/s40195-024-01735-8","DOIUrl":null,"url":null,"abstract":"<div><p>Transition metal sulfides (TMS) hold great promise as anode materials for Li<sup>+</sup>/Na<sup>+</sup> storage. However, their practical application still faces several challenges, such as inadequate electrical conductivity, substantial volume changes and a propensity for agglomeration. To tackle these challenges, a 3D composite structure composed of graphene nanosheets crosslinked core−shell FeS<sub>2</sub>@N, S co−doped porous carbon (FeS<sub>2</sub>@NSC/GNs) is created by combining self−template polymerization with the graphene encapsulation technique. Systematic characterization and analysis demonstrate the effectiveness of the self−template polymerization strategy in generating a porous core−shell structure, which facilitates the uniform dispersion and optimal contact of the FeS<sub>2</sub> core within the carbon shell. Concurrently, the integration of graphene, alongside the porous carbon shell, introduces a sophisticated dual−protection mechanism against volume expansion and undesirable FeS<sub>2</sub> aggregation. Furthermore, the resulting 3D architecture enables efficient electron/ion transport and provides abundant sites for Li<sup>+</sup>/Na<sup>+</sup> storage. Leveraging these inherent benefits, the FeS<sub>2</sub>@NSC/GNs composite exhibits significantly improved lithium/sodium storage performance in comparison to the counterparts. Evidently, our proposed approach offers valuable guidance for the construction of advanced anodes for lithium/sodium−ion batteries.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":null,"pages":null},"PeriodicalIF":2.9000,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"3D Graphene Nanosheets Crosslinked Core–Shell FeS2@N, S Co-Doped Porous Carbon for Improved Lithium/Sodium Storage Performance\",\"authors\":\"Liang Chen, Lan-Yun Yang, Li-Ying Hu, Xu Liu, Chen-Xi Xu, Ying Liu, Wei Wang, Wen-Yuan Xu, Zhao-Hui Hou\",\"doi\":\"10.1007/s40195-024-01735-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Transition metal sulfides (TMS) hold great promise as anode materials for Li<sup>+</sup>/Na<sup>+</sup> storage. However, their practical application still faces several challenges, such as inadequate electrical conductivity, substantial volume changes and a propensity for agglomeration. To tackle these challenges, a 3D composite structure composed of graphene nanosheets crosslinked core−shell FeS<sub>2</sub>@N, S co−doped porous carbon (FeS<sub>2</sub>@NSC/GNs) is created by combining self−template polymerization with the graphene encapsulation technique. Systematic characterization and analysis demonstrate the effectiveness of the self−template polymerization strategy in generating a porous core−shell structure, which facilitates the uniform dispersion and optimal contact of the FeS<sub>2</sub> core within the carbon shell. Concurrently, the integration of graphene, alongside the porous carbon shell, introduces a sophisticated dual−protection mechanism against volume expansion and undesirable FeS<sub>2</sub> aggregation. Furthermore, the resulting 3D architecture enables efficient electron/ion transport and provides abundant sites for Li<sup>+</sup>/Na<sup>+</sup> storage. Leveraging these inherent benefits, the FeS<sub>2</sub>@NSC/GNs composite exhibits significantly improved lithium/sodium storage performance in comparison to the counterparts. Evidently, our proposed approach offers valuable guidance for the construction of advanced anodes for lithium/sodium−ion batteries.</p></div>\",\"PeriodicalId\":457,\"journal\":{\"name\":\"Acta Metallurgica Sinica-English Letters\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.9000,\"publicationDate\":\"2024-06-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta Metallurgica Sinica-English Letters\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s40195-024-01735-8\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"METALLURGY & METALLURGICAL ENGINEERING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Metallurgica Sinica-English Letters","FirstCategoryId":"1","ListUrlMain":"https://link.springer.com/article/10.1007/s40195-024-01735-8","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
3D Graphene Nanosheets Crosslinked Core–Shell FeS2@N, S Co-Doped Porous Carbon for Improved Lithium/Sodium Storage Performance
Transition metal sulfides (TMS) hold great promise as anode materials for Li+/Na+ storage. However, their practical application still faces several challenges, such as inadequate electrical conductivity, substantial volume changes and a propensity for agglomeration. To tackle these challenges, a 3D composite structure composed of graphene nanosheets crosslinked core−shell FeS2@N, S co−doped porous carbon (FeS2@NSC/GNs) is created by combining self−template polymerization with the graphene encapsulation technique. Systematic characterization and analysis demonstrate the effectiveness of the self−template polymerization strategy in generating a porous core−shell structure, which facilitates the uniform dispersion and optimal contact of the FeS2 core within the carbon shell. Concurrently, the integration of graphene, alongside the porous carbon shell, introduces a sophisticated dual−protection mechanism against volume expansion and undesirable FeS2 aggregation. Furthermore, the resulting 3D architecture enables efficient electron/ion transport and provides abundant sites for Li+/Na+ storage. Leveraging these inherent benefits, the FeS2@NSC/GNs composite exhibits significantly improved lithium/sodium storage performance in comparison to the counterparts. Evidently, our proposed approach offers valuable guidance for the construction of advanced anodes for lithium/sodium−ion batteries.
期刊介绍:
This international journal presents compact reports of significant, original and timely research reflecting progress in metallurgy, materials science and engineering, including materials physics, physical metallurgy, and process metallurgy.