Scalable electrochemical grafting of anthraquinone for fabrication of multifunctional carbon fibers  

作　　者：Piers Coia Bhagya Dharmasiri Filip Stojcevski David J.Hayne Elmer Austria Jr. Behnam Akhavan Joselito M.Razal Ken Aldren S.Usman Melissa K.Stanfield Luke C.Henderson 

机构地区：[1]Institute for Frontier Materials,Deakin University,Waurn Ponds,Victoria 3216,Australia [2]DSTG,Victoria 3168,Australia [3]School of Biomedical Engineering,Faculty of Engineering,University of Sydney,Sydney,NSW 2006,Australia [4]School of Engineering,University of Newcastle,Callaghan,NSW 2308,Australia [5]Hunter Medical Research Institute(HMRI),Precision Medicine Program,New Lambton Heights NSW 2305,Australia [6]School of Natural Sciences–Chemistry,University of Tasmania,Hobart,Tasmania 7005,Australia

出　　处：《Journal of Materials Science & Technology》2024年第33期162-175,共14页材料科学技术(英文版)

基　　金：the Australian Research Council World Class Future Fiber Industry Transformation Research Hub(No.IH210100023);the Discovery Projects(Nos.DP180100094,DP200100090,and DP230100587);the Discovery Early Career Re-search Award DECRA(No.DE210100662);the IM Fellowship(No.IM230100048);supported by the Office of Naval Research(No.N62909-22-1-2052)。

摘　　要：Carbon fiber electrodes were prepared by grafting anthraquinone molecules via a scalable electrochemical approach which simultaneously increased interfacial and electrochemical capacitance properties.In this work,anthraquinone diazonium salts were synthesized and grafted onto carbon fiber tows at various concentrations.These modified fibers were subsequently evaluated mechanically and electrochemically to analyze their suitability in structural supercapacitors.Compared to control fibers,the grafted anthraquinone groups resulted in a 30%increase in interfacial shear strength(IFSS)and 6.6×increase in specific capacitance.Industry application was also a focus thus carbon fibers were also modified with insitu generated diazonium salts to determine the applicability to an in-line industrial process.Specifically,potentiostatic functionalization of fibers with in-situ generated diazonium salts AQ-1 and AQ-2,showed 3×and 4.3×increase in specific capacitance,respectively,relative to unmodified carbon fiber(CF).We expect that implementing a scalable method to introduce a conductive and electrochemically active covalently bound surface chemistry layer onto carbon fiber exhibits a higher specific capacitance than carbon fiber grafted with most other small molecules reported in literature.This will open new avenues for manufacturing multifunctional and high-performance fibers with tailored properties for specific/targeted applications.

关 键 词：Carbon fiber Energy storage INTERFACE Surface modification 

分 类 号：TB3[一般工业技术—材料科学与工程]