Electrochemical behavior of metallic and semiconducting single-wall carbon nanotubes for electric double-layer capacitor

Autor:	Yasuhiro Yamada, Takeshi Tanaka, Hiroaki Hatori, Kenji Machida, Kenji Tamamitsu, Hiromichi Kataura, Shunzo Suematsu
Rok vydání:	2012
Předmět:	Conductive polymer Materials science Doping Nanotechnology General Chemistry Carbon nanotube Electric double-layer capacitor Electrochemistry Capacitance law.invention Metal Chemical engineering law visual_art Electrode visual_art.visual_art_medium General Materials Science
Zdroj:	Carbon. 50:1422-1424
ISSN:	0008-6223
DOI:	10.1016/j.carbon.2011.09.062
Popis:	Electrochemical behavior of metallic and semiconducting single-wall carbon nanotubes (SWCNTs) separated by agarose gel chromatography was analyzed as electrodes of electric double-layer capacitor (EDLC). Due to the doping of ions to semiconducting SWCNTs, the cyclic voltammogram of semiconducting SWCNTs showed amphoteric behavior, which is analogous to that of dopable conducting polymers. As the potential was increased or decreased from the flat band potential, the capacitance of semiconducting SWCNTs was increased, but that of metallic SWCNTs was slightly increased. The high capacitance of semiconducting SWCNTs at the high potential is beneficial for EDLC due to the possible limitation of capacitance.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c8df24f67af9fd6542dcb984928d82ed https://doi.org/10.1016/j.carbon.2011.09.062 Zobrazit plný text záznamu Full Text from ScienceDirect