One‐Step Synthesis of Carbon‐Protected Co3O4 Nanoparticles toward Long‐Term Water Oxidation in Acidic Media

The design and development of highly efficient and stable oxygen evolution reaction (OER) electrocatalysts in acid media are important for various renewable technologies. Herein, an advanced Co3O4 electrocatalyst supported on a mesoporous hydrophobic carbon paper (Co/29BC) is formed via a simple one...

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Autores principales:	Qiwen Lai, Veeramani Vediyappan, Kondo-Francois Aguey-Zinsou, Hiroshige Matsumoto
Formato:	article
Lenguaje:	EN
Publicado:	Wiley-VCH 2021
Materias:	hydrogen generation noble metal-free electrocatalysts oxygen evolution reactions proton exchange membrane water electrolysis Environmental technology. Sanitary engineering TD1-1066 Renewable energy sources TJ807-830
Acceso en línea:	https://doaj.org/article/f2b9ba590fd34be5bd49546a9b1558cd
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spelling	oai:doaj.org-article:f2b9ba590fd34be5bd49546a9b1558cd2021-11-04T09:03:08ZOne‐Step Synthesis of Carbon‐Protected Co3O4 Nanoparticles toward Long‐Term Water Oxidation in Acidic Media2699-941210.1002/aesr.202100086https://doaj.org/article/f2b9ba590fd34be5bd49546a9b1558cd2021-11-01T00:00:00Zhttps://doi.org/10.1002/aesr.202100086https://doaj.org/toc/2699-9412The design and development of highly efficient and stable oxygen evolution reaction (OER) electrocatalysts in acid media are important for various renewable technologies. Herein, an advanced Co3O4 electrocatalyst supported on a mesoporous hydrophobic carbon paper (Co/29BC) is formed via a simple one‐step thermal decomposition of cobalt nitrate. Through this novel approach, the amorphous carbon layer resulting from the thermal decomposition of carbon‐containing species in the mesoporous layer provides enhanced electronic conduction and protection against corrosion to the Co3O4 nanoparticles. Equally important, the OER performance is found to be correlated with the morphology and surface composition of Co3O4. With optimized Co3+ active sites and oxygen vacancies at the metal oxide surface, the Co3O4 catalyst shows superior OER performance and durability in a proton exchange membrane (PEM) water electrolyzer, with a small overpotential (350 mV) at a constant current density of 10 mA cm−1 for over 50 h. Accordingly, this work provides new insights toward the design of high‐performance and highly stable OER electrocatalysts in corrosive acidic environments.Qiwen LaiVeeramani VediyappanKondo-Francois Aguey-ZinsouHiroshige MatsumotoWiley-VCHarticlehydrogen generationnoble metal-free electrocatalystsoxygen evolution reactionsproton exchange membrane water electrolysisEnvironmental technology. Sanitary engineeringTD1-1066Renewable energy sourcesTJ807-830ENAdvanced Energy & Sustainability Research, Vol 2, Iss 11, Pp n/a-n/a (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	hydrogen generation noble metal-free electrocatalysts oxygen evolution reactions proton exchange membrane water electrolysis Environmental technology. Sanitary engineering TD1-1066 Renewable energy sources TJ807-830
spellingShingle	hydrogen generation noble metal-free electrocatalysts oxygen evolution reactions proton exchange membrane water electrolysis Environmental technology. Sanitary engineering TD1-1066 Renewable energy sources TJ807-830 Qiwen Lai Veeramani Vediyappan Kondo-Francois Aguey-Zinsou Hiroshige Matsumoto One‐Step Synthesis of Carbon‐Protected Co3O4 Nanoparticles toward Long‐Term Water Oxidation in Acidic Media
description	The design and development of highly efficient and stable oxygen evolution reaction (OER) electrocatalysts in acid media are important for various renewable technologies. Herein, an advanced Co3O4 electrocatalyst supported on a mesoporous hydrophobic carbon paper (Co/29BC) is formed via a simple one‐step thermal decomposition of cobalt nitrate. Through this novel approach, the amorphous carbon layer resulting from the thermal decomposition of carbon‐containing species in the mesoporous layer provides enhanced electronic conduction and protection against corrosion to the Co3O4 nanoparticles. Equally important, the OER performance is found to be correlated with the morphology and surface composition of Co3O4. With optimized Co3+ active sites and oxygen vacancies at the metal oxide surface, the Co3O4 catalyst shows superior OER performance and durability in a proton exchange membrane (PEM) water electrolyzer, with a small overpotential (350 mV) at a constant current density of 10 mA cm−1 for over 50 h. Accordingly, this work provides new insights toward the design of high‐performance and highly stable OER electrocatalysts in corrosive acidic environments.
format	article
author	Qiwen Lai Veeramani Vediyappan Kondo-Francois Aguey-Zinsou Hiroshige Matsumoto
author_facet	Qiwen Lai Veeramani Vediyappan Kondo-Francois Aguey-Zinsou Hiroshige Matsumoto
author_sort	Qiwen Lai
title	One‐Step Synthesis of Carbon‐Protected Co3O4 Nanoparticles toward Long‐Term Water Oxidation in Acidic Media
title_short	One‐Step Synthesis of Carbon‐Protected Co3O4 Nanoparticles toward Long‐Term Water Oxidation in Acidic Media
title_full	One‐Step Synthesis of Carbon‐Protected Co3O4 Nanoparticles toward Long‐Term Water Oxidation in Acidic Media
title_fullStr	One‐Step Synthesis of Carbon‐Protected Co3O4 Nanoparticles toward Long‐Term Water Oxidation in Acidic Media
title_full_unstemmed	One‐Step Synthesis of Carbon‐Protected Co3O4 Nanoparticles toward Long‐Term Water Oxidation in Acidic Media
title_sort	one‐step synthesis of carbon‐protected co3o4 nanoparticles toward long‐term water oxidation in acidic media
publisher	Wiley-VCH
publishDate	2021
url	https://doaj.org/article/f2b9ba590fd34be5bd49546a9b1558cd
work_keys_str_mv	AT qiwenlai onestepsynthesisofcarbonprotectedco3o4nanoparticlestowardlongtermwateroxidationinacidicmedia AT veeramanivediyappan onestepsynthesisofcarbonprotectedco3o4nanoparticlestowardlongtermwateroxidationinacidicmedia AT kondofrancoisagueyzinsou onestepsynthesisofcarbonprotectedco3o4nanoparticlestowardlongtermwateroxidationinacidicmedia AT hiroshigematsumoto onestepsynthesisofcarbonprotectedco3o4nanoparticlestowardlongtermwateroxidationinacidicmedia
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One‐Step Synthesis of Carbon‐Protected Co3O4 Nanoparticles toward Long‐Term Water Oxidation in Acidic Media

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