Hydrogen adsorption and cohesive energy of single-walled carbon nanotubes

Y. Ye; C. C. Ahn; C. Witham; B. Fultz; J. Liu; A. G. Rinzler; D. Colbert; K. A. Smith; R. E. Smalley

doi:10.1063/1.123833

Hydrogen adsorption and cohesive energy of single-walled carbon nanotubes

Y. Ye^*
, C. C. Ahn
, C. Witham
, B. Fultz
, J. Liu
, A. G. Rinzler
, D. Colbert
, K. A. Smith
, R. E. Smalley

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1000 Scopus citations

Abstract

The capacity of single-walled carbon nanotubes for hydrogen sorption of 5-10 wt% at 1 bar near room temperature was investigated. A purified sample of SWNTs were cut and their robe structure was disrupted by sonication, and the modified SWNT was extracted by vacuum filtration using a ceramic filter. Desorption and adsorption isotherm measurements showed that with SWNTs, hydrogen will adsorb and desorb over a narrow change of pressure, so storage systems can be designed to operate without wide pressure excursions. Adsorption on crystalline ropes exceeded 8 wt%. Hydrogen first adsorbs to the ropes' outer surfaces, then, upon separation of the individual SWNTs at pressures higher than 40 bar at 80 K, the gas physisorbs to the exposed surfaces.

Original language	English
Pages (from-to)	2307-2309
Number of pages	3
Journal	Applied Physics Letters
Volume	74
Issue number	16
DOIs	https://doi.org/10.1063/1.123833
State	Published - 19 Apr 1999
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.123833

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title = "Hydrogen adsorption and cohesive energy of single-walled carbon nanotubes",

abstract = "The capacity of single-walled carbon nanotubes for hydrogen sorption of 5-10 wt\% at 1 bar near room temperature was investigated. A purified sample of SWNTs were cut and their robe structure was disrupted by sonication, and the modified SWNT was extracted by vacuum filtration using a ceramic filter. Desorption and adsorption isotherm measurements showed that with SWNTs, hydrogen will adsorb and desorb over a narrow change of pressure, so storage systems can be designed to operate without wide pressure excursions. Adsorption on crystalline ropes exceeded 8 wt\%. Hydrogen first adsorbs to the ropes' outer surfaces, then, upon separation of the individual SWNTs at pressures higher than 40 bar at 80 K, the gas physisorbs to the exposed surfaces.",

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T1 - Hydrogen adsorption and cohesive energy of single-walled carbon nanotubes

AU - Ye, Y.

AU - Ahn, C. C.

AU - Witham, C.

AU - Fultz, B.

AU - Liu, J.

AU - Rinzler, A. G.

AU - Colbert, D.

AU - Smith, K. A.

AU - Smalley, R. E.

PY - 1999/4/19

Y1 - 1999/4/19

N2 - The capacity of single-walled carbon nanotubes for hydrogen sorption of 5-10 wt% at 1 bar near room temperature was investigated. A purified sample of SWNTs were cut and their robe structure was disrupted by sonication, and the modified SWNT was extracted by vacuum filtration using a ceramic filter. Desorption and adsorption isotherm measurements showed that with SWNTs, hydrogen will adsorb and desorb over a narrow change of pressure, so storage systems can be designed to operate without wide pressure excursions. Adsorption on crystalline ropes exceeded 8 wt%. Hydrogen first adsorbs to the ropes' outer surfaces, then, upon separation of the individual SWNTs at pressures higher than 40 bar at 80 K, the gas physisorbs to the exposed surfaces.

AB - The capacity of single-walled carbon nanotubes for hydrogen sorption of 5-10 wt% at 1 bar near room temperature was investigated. A purified sample of SWNTs were cut and their robe structure was disrupted by sonication, and the modified SWNT was extracted by vacuum filtration using a ceramic filter. Desorption and adsorption isotherm measurements showed that with SWNTs, hydrogen will adsorb and desorb over a narrow change of pressure, so storage systems can be designed to operate without wide pressure excursions. Adsorption on crystalline ropes exceeded 8 wt%. Hydrogen first adsorbs to the ropes' outer surfaces, then, upon separation of the individual SWNTs at pressures higher than 40 bar at 80 K, the gas physisorbs to the exposed surfaces.

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DO - 10.1063/1.123833

M3 - Article

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 16

ER -

Hydrogen adsorption and cohesive energy of single-walled carbon nanotubes

Abstract

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