Carbon black functionalized by grafting of Azo‐generated‐radicals as electrocatalyst support for the oxygen reduction reaction

Abstract Functionalization of the carbon support is a promising strategy for lowering platinum loadings at the cathode of proton exchange membrane fuel cells. Here, nitrogen‐containing moieties are introduced directly onto carbon black by a simple and easily tunable grafting method initiated by the...

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Autores principales:	Koji Matsutori, Pierre‐Yves Olu, Miki Matsuoka, Taichi Nakazawa, Taro Kinumoto
Formato:	article
Lenguaje:	EN
Publicado:	Wiley-VCH 2021
Materias:	carbon black durability grafting oxygen reduction reaction proton‐exchange membrane fuel cells Industrial electrochemistry TP250-261 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/88e1ed130abe460590b5a045ae415ab0
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spelling	oai:doaj.org-article:88e1ed130abe460590b5a045ae415ab02021-11-23T18:05:26ZCarbon black functionalized by grafting of Azo‐generated‐radicals as electrocatalyst support for the oxygen reduction reaction2698-597710.1002/elsa.202100014https://doaj.org/article/88e1ed130abe460590b5a045ae415ab02021-11-01T00:00:00Zhttps://doi.org/10.1002/elsa.202100014https://doaj.org/toc/2698-5977Abstract Functionalization of the carbon support is a promising strategy for lowering platinum loadings at the cathode of proton exchange membrane fuel cells. Here, nitrogen‐containing moieties are introduced directly onto carbon black by a simple and easily tunable grafting method initiated by the thermal decomposition of azo compounds in water. X‐ray photoelectron spectroscopy (XPS) and elemental analysis confirm the successful functionalization. After deposition of Pt nanoparticles onto the carbon supports, the electrocatalysts are characterized in thin film rotating disk electrode (RDE) configuration towards the acidic oxygen reduction reaction (ORR). The grafting does not influence the Pt intrinsic ORR activity when the thin film does not include ionomer. However, the functionalization modifies the ionomer/carbon material interaction, leading to higher apparent ORR activity when the ionomer is included in the thin film. Moreover, accelerated stress testing shows durability enhancement as the result of grafting.Koji MatsutoriPierre‐Yves OluMiki MatsuokaTaichi NakazawaTaro KinumotoWiley-VCHarticlecarbon blackdurabilitygraftingoxygen reduction reactionproton‐exchange membrane fuel cellsIndustrial electrochemistryTP250-261ChemistryQD1-999ENElectrochemical Science Advances, Vol 1, Iss 4, Pp n/a-n/a (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	carbon black durability grafting oxygen reduction reaction proton‐exchange membrane fuel cells Industrial electrochemistry TP250-261 Chemistry QD1-999
spellingShingle	carbon black durability grafting oxygen reduction reaction proton‐exchange membrane fuel cells Industrial electrochemistry TP250-261 Chemistry QD1-999 Koji Matsutori Pierre‐Yves Olu Miki Matsuoka Taichi Nakazawa Taro Kinumoto Carbon black functionalized by grafting of Azo‐generated‐radicals as electrocatalyst support for the oxygen reduction reaction
description	Abstract Functionalization of the carbon support is a promising strategy for lowering platinum loadings at the cathode of proton exchange membrane fuel cells. Here, nitrogen‐containing moieties are introduced directly onto carbon black by a simple and easily tunable grafting method initiated by the thermal decomposition of azo compounds in water. X‐ray photoelectron spectroscopy (XPS) and elemental analysis confirm the successful functionalization. After deposition of Pt nanoparticles onto the carbon supports, the electrocatalysts are characterized in thin film rotating disk electrode (RDE) configuration towards the acidic oxygen reduction reaction (ORR). The grafting does not influence the Pt intrinsic ORR activity when the thin film does not include ionomer. However, the functionalization modifies the ionomer/carbon material interaction, leading to higher apparent ORR activity when the ionomer is included in the thin film. Moreover, accelerated stress testing shows durability enhancement as the result of grafting.
format	article
author	Koji Matsutori Pierre‐Yves Olu Miki Matsuoka Taichi Nakazawa Taro Kinumoto
author_facet	Koji Matsutori Pierre‐Yves Olu Miki Matsuoka Taichi Nakazawa Taro Kinumoto
author_sort	Koji Matsutori
title	Carbon black functionalized by grafting of Azo‐generated‐radicals as electrocatalyst support for the oxygen reduction reaction
title_short	Carbon black functionalized by grafting of Azo‐generated‐radicals as electrocatalyst support for the oxygen reduction reaction
title_full	Carbon black functionalized by grafting of Azo‐generated‐radicals as electrocatalyst support for the oxygen reduction reaction
title_fullStr	Carbon black functionalized by grafting of Azo‐generated‐radicals as electrocatalyst support for the oxygen reduction reaction
title_full_unstemmed	Carbon black functionalized by grafting of Azo‐generated‐radicals as electrocatalyst support for the oxygen reduction reaction
title_sort	carbon black functionalized by grafting of azo‐generated‐radicals as electrocatalyst support for the oxygen reduction reaction
publisher	Wiley-VCH
publishDate	2021
url	https://doaj.org/article/88e1ed130abe460590b5a045ae415ab0
work_keys_str_mv	AT kojimatsutori carbonblackfunctionalizedbygraftingofazogeneratedradicalsaselectrocatalystsupportfortheoxygenreductionreaction AT pierreyvesolu carbonblackfunctionalizedbygraftingofazogeneratedradicalsaselectrocatalystsupportfortheoxygenreductionreaction AT mikimatsuoka carbonblackfunctionalizedbygraftingofazogeneratedradicalsaselectrocatalystsupportfortheoxygenreductionreaction AT taichinakazawa carbonblackfunctionalizedbygraftingofazogeneratedradicalsaselectrocatalystsupportfortheoxygenreductionreaction AT tarokinumoto carbonblackfunctionalizedbygraftingofazogeneratedradicalsaselectrocatalystsupportfortheoxygenreductionreaction
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Carbon black functionalized by grafting of Azo‐generated‐radicals as electrocatalyst support for the oxygen reduction reaction

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