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Aerosol‐Assisted Chemical Vapor Deposition of Multi‐Walled Carbon Nanotubes on Steel Substrates for Application in Supercapacitors
Author(s) -
Sagu Jagdeep S.,
Upul Wijayantha Kahagala Gamage,
Bohm Mallika,
Bohm Siva,
Rout Tapan Kumar
Publication year - 2016
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201500585
Subject(s) - materials science , carbon nanotube , supercapacitor , ferrocene , chemical vapor deposition , chemical engineering , capacitance , carbon fibers , electrode , nanotechnology , electrochemistry , composite material , chemistry , composite number , engineering
Carbon nanotubes (CNTs) are grown on to steel substrates by aerosol‐assisted chemical vapor deposition using ferrocene in ethanol as the carbon feedstock. The CNTs adopted a highly entangled morphology. Elemental analysis indicates that the main source of carbon for CNT growth is from the cyclopentadiene rings in ferrocene rather than the ethanol solvent. The CNT‐coated steel substrates are evaluated for their performance as supercapacitor electrodes. The electrodes exhibit a high geometric capacitance of 3.4 mF cm −2 which is due to the high internal surface area, but a relatively low specific capacitance of 0.34 F g −1 .