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Indexed by:期刊论文

Date of Publication:2011-01-15

Journal:MATERIALS LETTERS

Included Journals:SCIE、EI

Volume:65

Issue:1

Page Number:49-52

ISSN No.:0167-577X

Key Words:Nanomatenals; Supercapacitors; Chemical vapor deposition

Abstract:High yield bamboo shaped N doped multi-walled carbon nanotubes (MWNTs) containing 227 at % N were fabricated by pyrolysis of pyridine at 800 C in an Ar atmosphere The electrochemical capacitive performances of this type of carbon fiber were evaluated in 6 M KOH aqueous solution The specific capacitance of N-doped MVVNT electrode is measured to be 443 F/g at the charge/discharge current of 1 mA which is two times greater I than that of the undoped one (19 9 F/g) The measurements also reveal that the N-doped MWNT electrode possesses lower equivalent series resistance (0 24 Omega) and higher knee frequency (1995 Hz) than the undoped one This improvement is attributed to the unique morphology and electronic properties of N doped MWNTs (C) 2010 Elsevier B V All rights reserved