One pot facile transformation of CO2 to an unusual 3-D nano-scaffold morphology of carbon

Abstract An electrosynthesis is presented to transform CO2 into an unusual nano and micron dimensioned morphology of carbon, termed Carbon Nano-Scaffold (CNS) with wide a range of high surface area graphene potential usages including batteries, supercapacitors, compression devices, electromagnetic w...

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Autores principales:	Xirui Wang, Gad Licht, Xinye Liu, Stuart Licht
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0e593225998c46acaba62739ec860d13
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spelling	oai:doaj.org-article:0e593225998c46acaba62739ec860d132021-12-02T15:11:51ZOne pot facile transformation of CO2 to an unusual 3-D nano-scaffold morphology of carbon10.1038/s41598-020-78258-62045-2322https://doaj.org/article/0e593225998c46acaba62739ec860d132020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-78258-6https://doaj.org/toc/2045-2322Abstract An electrosynthesis is presented to transform CO2 into an unusual nano and micron dimensioned morphology of carbon, termed Carbon Nano-Scaffold (CNS) with wide a range of high surface area graphene potential usages including batteries, supercapacitors, compression devices, electromagnetic wave shielding and sensors. Current CNS value is over $323 per milligram. The morphology consists of a series of asymmetric 20 to 100 nm thick flat multilayer graphene platelets 2 to 20 µm long orthogonally oriented in a 3D neoplasticism-like geometry, and appears distinct from the honeycomb, foam, or balsa wood cell structures previously attributed to carbon scaffolds. The CNS synthesis splits CO2 by electrolysis in molten carbonate and has a carbon negative footprint. It is observed that transition metal nucleated, high yield growth of carbon nanotubes (CNTs) is inhibited in electrolytes containing over 50 wt% of sodium or 30 wt% of potassium carbonate, or at electrolysis temperatures less than 700 °C. Here, it is found that a lower temperature of synthesis, lower concentrations of lithium carbonate, and higher current density promotes CNS growth while suppressing CNT growth. Electrolyte conditions of 50 wt% sodium carbonate relative to lithium carbonate at an electrolysis temperature of 670 °C produced over 80% of the CNS desired product at 85% faradaic efficiency with a Muntz brass cathode and an Inconel anode.Xirui WangGad LichtXinye LiuStuart LichtNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-12 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Xirui Wang Gad Licht Xinye Liu Stuart Licht One pot facile transformation of CO2 to an unusual 3-D nano-scaffold morphology of carbon
description	Abstract An electrosynthesis is presented to transform CO2 into an unusual nano and micron dimensioned morphology of carbon, termed Carbon Nano-Scaffold (CNS) with wide a range of high surface area graphene potential usages including batteries, supercapacitors, compression devices, electromagnetic wave shielding and sensors. Current CNS value is over $323 per milligram. The morphology consists of a series of asymmetric 20 to 100 nm thick flat multilayer graphene platelets 2 to 20 µm long orthogonally oriented in a 3D neoplasticism-like geometry, and appears distinct from the honeycomb, foam, or balsa wood cell structures previously attributed to carbon scaffolds. The CNS synthesis splits CO2 by electrolysis in molten carbonate and has a carbon negative footprint. It is observed that transition metal nucleated, high yield growth of carbon nanotubes (CNTs) is inhibited in electrolytes containing over 50 wt% of sodium or 30 wt% of potassium carbonate, or at electrolysis temperatures less than 700 °C. Here, it is found that a lower temperature of synthesis, lower concentrations of lithium carbonate, and higher current density promotes CNS growth while suppressing CNT growth. Electrolyte conditions of 50 wt% sodium carbonate relative to lithium carbonate at an electrolysis temperature of 670 °C produced over 80% of the CNS desired product at 85% faradaic efficiency with a Muntz brass cathode and an Inconel anode.
format	article
author	Xirui Wang Gad Licht Xinye Liu Stuart Licht
author_facet	Xirui Wang Gad Licht Xinye Liu Stuart Licht
author_sort	Xirui Wang
title	One pot facile transformation of CO2 to an unusual 3-D nano-scaffold morphology of carbon
title_short	One pot facile transformation of CO2 to an unusual 3-D nano-scaffold morphology of carbon
title_full	One pot facile transformation of CO2 to an unusual 3-D nano-scaffold morphology of carbon
title_fullStr	One pot facile transformation of CO2 to an unusual 3-D nano-scaffold morphology of carbon
title_full_unstemmed	One pot facile transformation of CO2 to an unusual 3-D nano-scaffold morphology of carbon
title_sort	one pot facile transformation of co2 to an unusual 3-d nano-scaffold morphology of carbon
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/0e593225998c46acaba62739ec860d13
work_keys_str_mv	AT xiruiwang onepotfaciletransformationofco2toanunusual3dnanoscaffoldmorphologyofcarbon AT gadlicht onepotfaciletransformationofco2toanunusual3dnanoscaffoldmorphologyofcarbon AT xinyeliu onepotfaciletransformationofco2toanunusual3dnanoscaffoldmorphologyofcarbon AT stuartlicht onepotfaciletransformationofco2toanunusual3dnanoscaffoldmorphologyofcarbon
_version_	1718387613151264768

One pot facile transformation of CO2 to an unusual 3-D nano-scaffold morphology of carbon

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