Pore Structures and Electric Double Layer Properties of Activated Carbon Derived from Demineralized Spent Coffee Grounds

To improve the specific surface area (SSA) of steam activated carbon that has been prepared from spent coffee grounds (SCG), a demineralization of the SCG was conducted. As the ash content of the SCG decreased, fine micropores developed during the activation, leading to a significant increase in the...

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Autores principales:	Keisuke KIKUCHI, Keigo HASUMI, Takashi FUJIMURA
Formato:	article
Lenguaje:	EN JA
Publicado:	The Electrochemical Society of Japan 2021
Materias:	spent coffee grounds edlc demineralization steam activation Technology T Physical and theoretical chemistry QD450-801
Acceso en línea:	https://doaj.org/article/cd6aa87017fc464b8f7b2c47d248e589
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spelling	oai:doaj.org-article:cd6aa87017fc464b8f7b2c47d248e5892021-11-05T00:17:27ZPore Structures and Electric Double Layer Properties of Activated Carbon Derived from Demineralized Spent Coffee Grounds2186-245110.5796/electrochemistry.21-00085https://doaj.org/article/cd6aa87017fc464b8f7b2c47d248e5892021-11-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/electrochemistry/89/6/89_21-00085/_html/-char/enhttps://doaj.org/toc/2186-2451To improve the specific surface area (SSA) of steam activated carbon that has been prepared from spent coffee grounds (SCG), a demineralization of the SCG was conducted. As the ash content of the SCG decreased, fine micropores developed during the activation, leading to a significant increase in the SSA. An electric double layer capacitor was assembled and then evaluated, with the evaluation results indicating that the capacitance per electrode weight, the capacitance retention in relation to the current density, and the internal resistance were superior for activated carbon with a higher SSA. However, the capacitance per electrode volume had a maximum value under certain conditions, which were considered well balanced in terms of the SSA and electrode density.Keisuke KIKUCHIKeigo HASUMITakashi FUJIMURAThe Electrochemical Society of Japanarticlespent coffee groundsedlcdemineralizationsteam activationTechnologyTPhysical and theoretical chemistryQD450-801ENJAElectrochemistry, Vol 89, Iss 6, Pp 573-578 (2021)
institution	DOAJ
collection	DOAJ
language	EN JA
topic	spent coffee grounds edlc demineralization steam activation Technology T Physical and theoretical chemistry QD450-801
spellingShingle	spent coffee grounds edlc demineralization steam activation Technology T Physical and theoretical chemistry QD450-801 Keisuke KIKUCHI Keigo HASUMI Takashi FUJIMURA Pore Structures and Electric Double Layer Properties of Activated Carbon Derived from Demineralized Spent Coffee Grounds
description	To improve the specific surface area (SSA) of steam activated carbon that has been prepared from spent coffee grounds (SCG), a demineralization of the SCG was conducted. As the ash content of the SCG decreased, fine micropores developed during the activation, leading to a significant increase in the SSA. An electric double layer capacitor was assembled and then evaluated, with the evaluation results indicating that the capacitance per electrode weight, the capacitance retention in relation to the current density, and the internal resistance were superior for activated carbon with a higher SSA. However, the capacitance per electrode volume had a maximum value under certain conditions, which were considered well balanced in terms of the SSA and electrode density.
format	article
author	Keisuke KIKUCHI Keigo HASUMI Takashi FUJIMURA
author_facet	Keisuke KIKUCHI Keigo HASUMI Takashi FUJIMURA
author_sort	Keisuke KIKUCHI
title	Pore Structures and Electric Double Layer Properties of Activated Carbon Derived from Demineralized Spent Coffee Grounds
title_short	Pore Structures and Electric Double Layer Properties of Activated Carbon Derived from Demineralized Spent Coffee Grounds
title_full	Pore Structures and Electric Double Layer Properties of Activated Carbon Derived from Demineralized Spent Coffee Grounds
title_fullStr	Pore Structures and Electric Double Layer Properties of Activated Carbon Derived from Demineralized Spent Coffee Grounds
title_full_unstemmed	Pore Structures and Electric Double Layer Properties of Activated Carbon Derived from Demineralized Spent Coffee Grounds
title_sort	pore structures and electric double layer properties of activated carbon derived from demineralized spent coffee grounds
publisher	The Electrochemical Society of Japan
publishDate	2021
url	https://doaj.org/article/cd6aa87017fc464b8f7b2c47d248e589
work_keys_str_mv	AT keisukekikuchi porestructuresandelectricdoublelayerpropertiesofactivatedcarbonderivedfromdemineralizedspentcoffeegrounds AT keigohasumi porestructuresandelectricdoublelayerpropertiesofactivatedcarbonderivedfromdemineralizedspentcoffeegrounds AT takashifujimura porestructuresandelectricdoublelayerpropertiesofactivatedcarbonderivedfromdemineralizedspentcoffeegrounds
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Pore Structures and Electric Double Layer Properties of Activated Carbon Derived from Demineralized Spent Coffee Grounds

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