Sodium borohydride (NaBH4) as a high-capacity material for next-generation sodium-ion capacitors

Energy storage is an integral part of the modern world. One of the newest and most interesting concepts is the internal hybridization achieved in metal-ion capacitors. In this study, for the first time we used sodium borohydride (NaBH4) as a sacrificial material for the preparation of next-generatio...

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Auteurs principaux:	Jeżowski Pawel, Crosnier Olivier, Brousse Thierry
Format:	article
Langue:	EN
Publié:	De Gruyter 2021
Sujets:	sodium-ion capacitors sacrificial salt sodium inorganic salt pre-sodiation composite carbon electrode Chemistry QD1-999
Accès en ligne:	https://doaj.org/article/a425bae724a041a18d4197748045c286
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spelling	oai:doaj.org-article:a425bae724a041a18d4197748045c2862021-12-05T14:10:44ZSodium borohydride (NaBH4) as a high-capacity material for next-generation sodium-ion capacitors2391-542010.1515/chem-2021-0040https://doaj.org/article/a425bae724a041a18d4197748045c2862021-04-01T00:00:00Zhttps://doi.org/10.1515/chem-2021-0040https://doaj.org/toc/2391-5420Energy storage is an integral part of the modern world. One of the newest and most interesting concepts is the internal hybridization achieved in metal-ion capacitors. In this study, for the first time we used sodium borohydride (NaBH4) as a sacrificial material for the preparation of next-generation sodium-ion capacitors (NICs). NaBH4 is a material with large irreversible capacity of ca. 700 mA h g−1 at very low extraction potential close to 2.4 vs Na+/Na0. An assembled NIC cell with the composite-positive electrode (activated carbon/NaBH4) and hard carbon as the negative one operates in the voltage range from 2.2 to 3.8 V for 5,000 cycles and retains 92% of its initial capacitance. The presented NIC has good efficiency >98% and energy density of ca. 18 W h kg−1 at power 2 kW kg−1 which is more than the energy (7 W h kg−1 at 2 kW kg−1) of an electrical double-layer capacitor (EDLC) operating at voltage 2.7 V with the equivalent components as in NIC. Tin phosphide (Sn4P3) as a negative electrode allowed the reaching of higher values of the specific energy density 33 W h kg−1 (ca. four times higher than EDLC) at the power density of 2 kW kg−1, with only 1% of capacity loss upon 5,000 cycles and efficiency >99%.Jeżowski PawelCrosnier OlivierBrousse ThierryDe Gruyterarticlesodium-ion capacitorssacrificial saltsodium inorganic saltpre-sodiationcomposite carbon electrodeChemistryQD1-999ENOpen Chemistry, Vol 19, Iss 1, Pp 432-441 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	sodium-ion capacitors sacrificial salt sodium inorganic salt pre-sodiation composite carbon electrode Chemistry QD1-999
spellingShingle	sodium-ion capacitors sacrificial salt sodium inorganic salt pre-sodiation composite carbon electrode Chemistry QD1-999 Jeżowski Pawel Crosnier Olivier Brousse Thierry Sodium borohydride (NaBH4) as a high-capacity material for next-generation sodium-ion capacitors
description	Energy storage is an integral part of the modern world. One of the newest and most interesting concepts is the internal hybridization achieved in metal-ion capacitors. In this study, for the first time we used sodium borohydride (NaBH4) as a sacrificial material for the preparation of next-generation sodium-ion capacitors (NICs). NaBH4 is a material with large irreversible capacity of ca. 700 mA h g−1 at very low extraction potential close to 2.4 vs Na+/Na0. An assembled NIC cell with the composite-positive electrode (activated carbon/NaBH4) and hard carbon as the negative one operates in the voltage range from 2.2 to 3.8 V for 5,000 cycles and retains 92% of its initial capacitance. The presented NIC has good efficiency >98% and energy density of ca. 18 W h kg−1 at power 2 kW kg−1 which is more than the energy (7 W h kg−1 at 2 kW kg−1) of an electrical double-layer capacitor (EDLC) operating at voltage 2.7 V with the equivalent components as in NIC. Tin phosphide (Sn4P3) as a negative electrode allowed the reaching of higher values of the specific energy density 33 W h kg−1 (ca. four times higher than EDLC) at the power density of 2 kW kg−1, with only 1% of capacity loss upon 5,000 cycles and efficiency >99%.
format	article
author	Jeżowski Pawel Crosnier Olivier Brousse Thierry
author_facet	Jeżowski Pawel Crosnier Olivier Brousse Thierry
author_sort	Jeżowski Pawel
title	Sodium borohydride (NaBH4) as a high-capacity material for next-generation sodium-ion capacitors
title_short	Sodium borohydride (NaBH4) as a high-capacity material for next-generation sodium-ion capacitors
title_full	Sodium borohydride (NaBH4) as a high-capacity material for next-generation sodium-ion capacitors
title_fullStr	Sodium borohydride (NaBH4) as a high-capacity material for next-generation sodium-ion capacitors
title_full_unstemmed	Sodium borohydride (NaBH4) as a high-capacity material for next-generation sodium-ion capacitors
title_sort	sodium borohydride (nabh4) as a high-capacity material for next-generation sodium-ion capacitors
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/a425bae724a041a18d4197748045c286
work_keys_str_mv	AT jezowskipawel sodiumborohydridenabh4asahighcapacitymaterialfornextgenerationsodiumioncapacitors AT crosnierolivier sodiumborohydridenabh4asahighcapacitymaterialfornextgenerationsodiumioncapacitors AT broussethierry sodiumborohydridenabh4asahighcapacitymaterialfornextgenerationsodiumioncapacitors
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Sodium borohydride (NaBH4) as a high-capacity material for next-generation sodium-ion capacitors

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