Carbon nanotube/Co3O4 nanocomposites selectively coated by polyaniline for high performance air electrodes

Abstract We herein report the preparation of carbon nanotube (CNT)/Co3O4 nanocomposites selectively coated with polyaniline (PANI) via an electropolymerization method, for use as an effective electrode material for Li-air (Li-O2) batteries. The Co3O4 catalyst attached to the CNTs facilitated the dis...

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Autores principales:	Jin Young Kim, Yong Joon Park
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b59f710b719e402ebe134c9989c77ae3
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spelling	oai:doaj.org-article:b59f710b719e402ebe134c9989c77ae32021-12-02T16:06:20ZCarbon nanotube/Co3O4 nanocomposites selectively coated by polyaniline for high performance air electrodes10.1038/s41598-017-09219-92045-2322https://doaj.org/article/b59f710b719e402ebe134c9989c77ae32017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-09219-9https://doaj.org/toc/2045-2322Abstract We herein report the preparation of carbon nanotube (CNT)/Co3O4 nanocomposites selectively coated with polyaniline (PANI) via an electropolymerization method, for use as an effective electrode material for Li-air (Li-O2) batteries. The Co3O4 catalyst attached to the CNTs facilitated the dissociation of reaction products and reduced the overpotential of the cells. As the carbon surface activates the side reactions, the PANI coating on the carbon surface of the electrode suppressed the side reaction at the electrode/Li2O2 and electrode/electrolyte interfaces, thus enhancing the cycle performance of the electrode. In addition, the catalytic activity of Co3O4 on the CNT/Co3O4 nanocomposites remained unaffected, as the Co3O4 surface was not covered with a PANI layer due to the nature of the electropolymerization method. Overall, the synergic effect of the PANI layer and the Co3O4 catalyst leads to a superior cyclic performance and a low overpotential for the electrode based on selectively PANI-coated CNT/Co3O4 nanocomposites.Jin Young KimYong Joon ParkNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jin Young Kim Yong Joon Park Carbon nanotube/Co3O4 nanocomposites selectively coated by polyaniline for high performance air electrodes
description	Abstract We herein report the preparation of carbon nanotube (CNT)/Co3O4 nanocomposites selectively coated with polyaniline (PANI) via an electropolymerization method, for use as an effective electrode material for Li-air (Li-O2) batteries. The Co3O4 catalyst attached to the CNTs facilitated the dissociation of reaction products and reduced the overpotential of the cells. As the carbon surface activates the side reactions, the PANI coating on the carbon surface of the electrode suppressed the side reaction at the electrode/Li2O2 and electrode/electrolyte interfaces, thus enhancing the cycle performance of the electrode. In addition, the catalytic activity of Co3O4 on the CNT/Co3O4 nanocomposites remained unaffected, as the Co3O4 surface was not covered with a PANI layer due to the nature of the electropolymerization method. Overall, the synergic effect of the PANI layer and the Co3O4 catalyst leads to a superior cyclic performance and a low overpotential for the electrode based on selectively PANI-coated CNT/Co3O4 nanocomposites.
format	article
author	Jin Young Kim Yong Joon Park
author_facet	Jin Young Kim Yong Joon Park
author_sort	Jin Young Kim
title	Carbon nanotube/Co3O4 nanocomposites selectively coated by polyaniline for high performance air electrodes
title_short	Carbon nanotube/Co3O4 nanocomposites selectively coated by polyaniline for high performance air electrodes
title_full	Carbon nanotube/Co3O4 nanocomposites selectively coated by polyaniline for high performance air electrodes
title_fullStr	Carbon nanotube/Co3O4 nanocomposites selectively coated by polyaniline for high performance air electrodes
title_full_unstemmed	Carbon nanotube/Co3O4 nanocomposites selectively coated by polyaniline for high performance air electrodes
title_sort	carbon nanotube/co3o4 nanocomposites selectively coated by polyaniline for high performance air electrodes
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/b59f710b719e402ebe134c9989c77ae3
work_keys_str_mv	AT jinyoungkim carbonnanotubeco3o4nanocompositesselectivelycoatedbypolyanilineforhighperformanceairelectrodes AT yongjoonpark carbonnanotubeco3o4nanocompositesselectivelycoatedbypolyanilineforhighperformanceairelectrodes
_version_	1718385048441323520

Carbon nanotube/Co3O4 nanocomposites selectively coated by polyaniline for high performance air electrodes

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