{"title":"碳纳米管和碳涂层作为硅基阳极导电网络的研究进展","authors":"Ziying He, Chenxi Zhang, Zhenxing Zhu, Yaxiong Yu, Chao Zheng, Fei Wei","doi":"10.1002/adfm.202408285","DOIUrl":null,"url":null,"abstract":"Silicon-based anode has high theoretical capacity but suffers from poor electrical conductivity, large volume expansion, and unstable solid electrolyte interphase (SEI). Adding carbon nanotubes (CNTs) and carbon coatings are both very effective methods for addressing the above issues. The intrinsic sp<sup>2</sup> covalent structure endows CNTs with excellent electrical conductivity, mechanical strength, and chemical stability, which makes them suitable for various energy storage applications, such as in lithium-ion batteries (LIBs). Apart from the conductive network, CNTs can serve as current collectors, mechanical probes, and mechanical frameworks, and they have potential in the construction of next-generation battery architectures. Carbon coatings are mixed ionic-electronic conductors with good chemical stability that provide mechanical support and mitigate the volume expansion of Si-based materials. This review outlines the advances in CNTs and carbon coatings as conductive networks in Si-based anodes, as well as insights into their future development. It provides an in-depth analysis of the percolation and mechanical mechanism of conductive networks, highlights the importance of flexible long-range conductivity, and decouples the relationships between stress, interface stability, and electron/ion transfer.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":null,"pages":null},"PeriodicalIF":18.5000,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Advances in Carbon Nanotubes and Carbon Coatings as Conductive Networks in Silicon-based Anodes\",\"authors\":\"Ziying He, Chenxi Zhang, Zhenxing Zhu, Yaxiong Yu, Chao Zheng, Fei Wei\",\"doi\":\"10.1002/adfm.202408285\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Silicon-based anode has high theoretical capacity but suffers from poor electrical conductivity, large volume expansion, and unstable solid electrolyte interphase (SEI). Adding carbon nanotubes (CNTs) and carbon coatings are both very effective methods for addressing the above issues. The intrinsic sp<sup>2</sup> covalent structure endows CNTs with excellent electrical conductivity, mechanical strength, and chemical stability, which makes them suitable for various energy storage applications, such as in lithium-ion batteries (LIBs). Apart from the conductive network, CNTs can serve as current collectors, mechanical probes, and mechanical frameworks, and they have potential in the construction of next-generation battery architectures. Carbon coatings are mixed ionic-electronic conductors with good chemical stability that provide mechanical support and mitigate the volume expansion of Si-based materials. This review outlines the advances in CNTs and carbon coatings as conductive networks in Si-based anodes, as well as insights into their future development. It provides an in-depth analysis of the percolation and mechanical mechanism of conductive networks, highlights the importance of flexible long-range conductivity, and decouples the relationships between stress, interface stability, and electron/ion transfer.\",\"PeriodicalId\":112,\"journal\":{\"name\":\"Advanced Functional Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":18.5000,\"publicationDate\":\"2024-07-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Functional Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1002/adfm.202408285\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Functional Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1002/adfm.202408285","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Advances in Carbon Nanotubes and Carbon Coatings as Conductive Networks in Silicon-based Anodes
Silicon-based anode has high theoretical capacity but suffers from poor electrical conductivity, large volume expansion, and unstable solid electrolyte interphase (SEI). Adding carbon nanotubes (CNTs) and carbon coatings are both very effective methods for addressing the above issues. The intrinsic sp2 covalent structure endows CNTs with excellent electrical conductivity, mechanical strength, and chemical stability, which makes them suitable for various energy storage applications, such as in lithium-ion batteries (LIBs). Apart from the conductive network, CNTs can serve as current collectors, mechanical probes, and mechanical frameworks, and they have potential in the construction of next-generation battery architectures. Carbon coatings are mixed ionic-electronic conductors with good chemical stability that provide mechanical support and mitigate the volume expansion of Si-based materials. This review outlines the advances in CNTs and carbon coatings as conductive networks in Si-based anodes, as well as insights into their future development. It provides an in-depth analysis of the percolation and mechanical mechanism of conductive networks, highlights the importance of flexible long-range conductivity, and decouples the relationships between stress, interface stability, and electron/ion transfer.
期刊介绍:
Firmly established as a top-tier materials science journal, Advanced Functional Materials reports breakthrough research in all aspects of materials science, including nanotechnology, chemistry, physics, and biology every week.
Advanced Functional Materials is known for its rapid and fair peer review, quality content, and high impact, making it the first choice of the international materials science community.