首页|Scalable electrochemical grafting of anthraquinone for fabrication of multifunctional carbon fibers

Scalable electrochemical grafting of anthraquinone for fabrication of multifunctional carbon fibers

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Carbon fiber electrodes were prepared by grafting anthraquinone molecules via a scalable electrochem-ical approach which simultaneously increased interfacial and electrochemical capacitance properties.In this work,anthraquinone diazonium salts were synthesized and grafted onto carbon fiber tows at var-ious concentrations.These modified fibers were subsequently evaluated mechanically and electrochem-ically 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 6.6x increase in specific capacitance.Industry application was also a focus thus carbon fibers were also modified with in-situ 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 3x and 4.3 x 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 cova-lently 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.

Carbon fiberEnergy storageInterfaceSurface modification

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

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Institute for Frontier Materials,Deakin University,Waurn Ponds,Victoria 3216,Australia

DSTG,Victoria 3168,Australia

School of Biomedical Engineering,Faculty of Engineering,University of Sydney,Sydney,NSW 2006,Australia

School of Engineering,University of Newcastle,Callaghan,NSW 2308,Australia

Hunter Medical Research Institute(HMRI),Precision Medicine Program,New Lambton Heights NSW 2305,Australia

School of Natural Sciences-Chemistry,University of Tasmania,Hobart,Tasmania 7005,Australia

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2024

10.1016/j.jmst.2024.03.006

材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.200(33)