Construction of core-shell structured SiC nanowires@carbon nanotubes hybrid conductive network for supercapacitors and electromagnetic interference shielding
Huimin Liu , Xin Zhang , Kezhi Li , Qing'an Cui , Liyuan Han , Qingliang Shen , Hejun Li , Xuemin Yin
{"title":"Construction of core-shell structured SiC nanowires@carbon nanotubes hybrid conductive network for supercapacitors and electromagnetic interference shielding","authors":"Huimin Liu , Xin Zhang , Kezhi Li , Qing'an Cui , Liyuan Han , Qingliang Shen , Hejun Li , Xuemin Yin","doi":"10.1016/j.carbon.2024.119411","DOIUrl":null,"url":null,"abstract":"<div><p>Since the swift progress of current intelligent devices, supercapacitors with effective electromagnetic interference (EMI) shielding ability are attractive for the modern electronics industry. Herein, we proposed a core-shell structure design strategy to construct hybrid conductive network with multistage heterogeneous interfaces. The SiC nanowires (NWs) were deposited in situ on the carbon fabric with robust bonding, which were covered by highly conductive carbon nanotubes (CNTs), constructing an interconnected core-shell structured SiCNWs@CNTs with large specific surface area. Obviously, CNTs significantly enhanced the conductivity and electroactive surface area of the SiCNWs, which ensured that the obtained SiCNWs@CNTs electrode exhibited a high areal capacitance of 53.53 mF/cm<sup>2</sup> at 0.2 mA/cm<sup>2</sup>. Meanwhile, the stable multistage structure with strong interface bonding conveyed excellent cycle stability (107.1 % capacitance retention after 5000 cycles at 10 mA/cm<sup>2</sup>). Moreover, due to the synergistic effect between SiCNWs and CNTs, the multistage heterogeneous structure with high conductivity and abundant interfaces enhanced the conductive and polarization loss. The integrated electrode possessed excellent EMI shielding performance of 47.99 dB in frequencies of 8.2–12.4 GHz. This research expands the horizons of the search for superior supercapacitors and EMI shielding performance, which will further benefit the advancement of SiCNWs-based composites for superior electronic devices.</p></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":null,"pages":null},"PeriodicalIF":10.5000,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Carbon","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0008622324006304","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Since the swift progress of current intelligent devices, supercapacitors with effective electromagnetic interference (EMI) shielding ability are attractive for the modern electronics industry. Herein, we proposed a core-shell structure design strategy to construct hybrid conductive network with multistage heterogeneous interfaces. The SiC nanowires (NWs) were deposited in situ on the carbon fabric with robust bonding, which were covered by highly conductive carbon nanotubes (CNTs), constructing an interconnected core-shell structured SiCNWs@CNTs with large specific surface area. Obviously, CNTs significantly enhanced the conductivity and electroactive surface area of the SiCNWs, which ensured that the obtained SiCNWs@CNTs electrode exhibited a high areal capacitance of 53.53 mF/cm2 at 0.2 mA/cm2. Meanwhile, the stable multistage structure with strong interface bonding conveyed excellent cycle stability (107.1 % capacitance retention after 5000 cycles at 10 mA/cm2). Moreover, due to the synergistic effect between SiCNWs and CNTs, the multistage heterogeneous structure with high conductivity and abundant interfaces enhanced the conductive and polarization loss. The integrated electrode possessed excellent EMI shielding performance of 47.99 dB in frequencies of 8.2–12.4 GHz. This research expands the horizons of the search for superior supercapacitors and EMI shielding performance, which will further benefit the advancement of SiCNWs-based composites for superior electronic devices.
期刊介绍:
The journal Carbon is an international multidisciplinary forum for communicating scientific advances in the field of carbon materials. It reports new findings related to the formation, structure, properties, behaviors, and technological applications of carbons. Carbons are a broad class of ordered or disordered solid phases composed primarily of elemental carbon, including but not limited to carbon black, carbon fibers and filaments, carbon nanotubes, diamond and diamond-like carbon, fullerenes, glassy carbon, graphite, graphene, graphene-oxide, porous carbons, pyrolytic carbon, and other sp2 and non-sp2 hybridized carbon systems. Carbon is the companion title to the open access journal Carbon Trends. Relevant application areas for carbon materials include biology and medicine, catalysis, electronic, optoelectronic, spintronic, high-frequency, and photonic devices, energy storage and conversion systems, environmental applications and water treatment, smart materials and systems, and structural and thermal applications.