High surface area micro-mesoporous graphene for electrochemical applications

Abstract The manuscript presents results on the influence of external pressure on graphene exfoliation and subsequent 3D structuring by means of liquid-phase exfoliation. In contrast to known and applied exfoliation methods, the current study exploits the enhancement of splitting forces caused by th...

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Autores principales:	Piotr Kamedulski, Malgorzata Skorupska, Pawel Binkowski, Weronika Arendarska, Anna Ilnicka, Jerzy P. Lukaszewicz
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ae202d237d614137a8ebac7029941e50
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spelling	oai:doaj.org-article:ae202d237d614137a8ebac7029941e502021-11-14T12:23:07ZHigh surface area micro-mesoporous graphene for electrochemical applications10.1038/s41598-021-01154-02045-2322https://doaj.org/article/ae202d237d614137a8ebac7029941e502021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01154-0https://doaj.org/toc/2045-2322Abstract The manuscript presents results on the influence of external pressure on graphene exfoliation and subsequent 3D structuring by means of liquid-phase exfoliation. In contrast to known and applied exfoliation methods, the current study exploits the enhancement of splitting forces caused by the application of high pressure. The manufacturing pathway allowed to increase the surface area from 750 m2/g (nanoplatelets) to ca. 1100 m2/g (after 3D structuring). Electrochemical studies revealed that the 3D graphene materials were active in the oxygen reduction reaction (ORR). The outstanding ORR activity of 3D structured graphene materials should not be ascribed to heteroatom catalytic centers since such heteroatoms were successively removed upon increasing the carbonization temperature. XPS data showed that the presence of transition metals and nitrogen (usually regarded as catalytic centers) in G-materials was marginal. The results highlight the importance of structural factors of electrodes in the case of graphene-based materials for Zn–air batteries and ORR.Piotr KamedulskiMalgorzata SkorupskaPawel BinkowskiWeronika ArendarskaAnna IlnickaJerzy P. LukaszewiczNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Piotr Kamedulski Malgorzata Skorupska Pawel Binkowski Weronika Arendarska Anna Ilnicka Jerzy P. Lukaszewicz High surface area micro-mesoporous graphene for electrochemical applications
description	Abstract The manuscript presents results on the influence of external pressure on graphene exfoliation and subsequent 3D structuring by means of liquid-phase exfoliation. In contrast to known and applied exfoliation methods, the current study exploits the enhancement of splitting forces caused by the application of high pressure. The manufacturing pathway allowed to increase the surface area from 750 m2/g (nanoplatelets) to ca. 1100 m2/g (after 3D structuring). Electrochemical studies revealed that the 3D graphene materials were active in the oxygen reduction reaction (ORR). The outstanding ORR activity of 3D structured graphene materials should not be ascribed to heteroatom catalytic centers since such heteroatoms were successively removed upon increasing the carbonization temperature. XPS data showed that the presence of transition metals and nitrogen (usually regarded as catalytic centers) in G-materials was marginal. The results highlight the importance of structural factors of electrodes in the case of graphene-based materials for Zn–air batteries and ORR.
format	article
author	Piotr Kamedulski Malgorzata Skorupska Pawel Binkowski Weronika Arendarska Anna Ilnicka Jerzy P. Lukaszewicz
author_facet	Piotr Kamedulski Malgorzata Skorupska Pawel Binkowski Weronika Arendarska Anna Ilnicka Jerzy P. Lukaszewicz
author_sort	Piotr Kamedulski
title	High surface area micro-mesoporous graphene for electrochemical applications
title_short	High surface area micro-mesoporous graphene for electrochemical applications
title_full	High surface area micro-mesoporous graphene for electrochemical applications
title_fullStr	High surface area micro-mesoporous graphene for electrochemical applications
title_full_unstemmed	High surface area micro-mesoporous graphene for electrochemical applications
title_sort	high surface area micro-mesoporous graphene for electrochemical applications
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/ae202d237d614137a8ebac7029941e50
work_keys_str_mv	AT piotrkamedulski highsurfaceareamicromesoporousgrapheneforelectrochemicalapplications AT malgorzataskorupska highsurfaceareamicromesoporousgrapheneforelectrochemicalapplications AT pawelbinkowski highsurfaceareamicromesoporousgrapheneforelectrochemicalapplications AT weronikaarendarska highsurfaceareamicromesoporousgrapheneforelectrochemicalapplications AT annailnicka highsurfaceareamicromesoporousgrapheneforelectrochemicalapplications AT jerzyplukaszewicz highsurfaceareamicromesoporousgrapheneforelectrochemicalapplications
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High surface area micro-mesoporous graphene for electrochemical applications

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