Large cryogenic storage of hydrogen in carbon nanotubes at low pressures

B. K. Pradhan; A. Harutyunyan; D. Stojkovic; P. Zhang; Milton Walter Cole; Vincent Henry Crespi; H. Goto; J. Fujiwara; P. C. Eklund

Large cryogenic storage of hydrogen in carbon nanotubes at low pressures

B. K. Pradhan, A. Harutyunyan, D. Stojkovic, P. Zhang, Milton Walter Cole, Vincent Henry Crespi, H. Goto, J. Fujiwara, P. C. Eklund

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

17 Scopus citations

Abstract

We report (6 wt %) storage of H₂ at T=77 K in processed bundles of single-walled carbon nanotubes at P=2 atmospheres. The hydrogen storage isotherms are completely reversible. D₂ isotherms confirm this anomalous low-pressure adsorption and further reveal the effects of quantum mechanical zero point motion. We propose that our post-synthesis treatment of the sample not only improves access for hydrogen to the central pores within individual nanotubes, but also may create a roughened tube surface with an enhanced binding energy for hydrogen. Such an enhancement is needed to understand the strong adsorption at low pressure. We obtain an experimental isosteric heat q_st = 125 ± 5 meV for processed SWNT materials.

Original language	English (US)
Pages (from-to)	331-336
Number of pages	6
Journal	Materials Research Society Symposium - Proceedings
Volume	706
State	Published - Jan 1 2002

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Cite this

@article{a0e45e55fbba47d6953b5d414b80f9aa,

title = "Large cryogenic storage of hydrogen in carbon nanotubes at low pressures",

abstract = "We report (6 wt %) storage of H2 at T=77 K in processed bundles of single-walled carbon nanotubes at P=2 atmospheres. The hydrogen storage isotherms are completely reversible. D2 isotherms confirm this anomalous low-pressure adsorption and further reveal the effects of quantum mechanical zero point motion. We propose that our post-synthesis treatment of the sample not only improves access for hydrogen to the central pores within individual nanotubes, but also may create a roughened tube surface with an enhanced binding energy for hydrogen. Such an enhancement is needed to understand the strong adsorption at low pressure. We obtain an experimental isosteric heat qst = 125 ± 5 meV for processed SWNT materials.",

author = "Pradhan, {B. K.} and A. Harutyunyan and D. Stojkovic and P. Zhang and Cole, {Milton Walter} and Crespi, {Vincent Henry} and H. Goto and J. Fujiwara and Eklund, {P. C.}",

year = "2002",

month = jan,

day = "1",

language = "English (US)",

volume = "706",

pages = "331--336",

journal = "Materials Research Society Symposium - Proceedings",

issn = "0272-9172",

publisher = "Materials Research Society",

}

TY - JOUR

T1 - Large cryogenic storage of hydrogen in carbon nanotubes at low pressures

AU - Pradhan, B. K.

AU - Harutyunyan, A.

AU - Stojkovic, D.

AU - Zhang, P.

AU - Cole, Milton Walter

AU - Crespi, Vincent Henry

AU - Goto, H.

AU - Fujiwara, J.

AU - Eklund, P. C.

PY - 2002/1/1

Y1 - 2002/1/1

N2 - We report (6 wt %) storage of H2 at T=77 K in processed bundles of single-walled carbon nanotubes at P=2 atmospheres. The hydrogen storage isotherms are completely reversible. D2 isotherms confirm this anomalous low-pressure adsorption and further reveal the effects of quantum mechanical zero point motion. We propose that our post-synthesis treatment of the sample not only improves access for hydrogen to the central pores within individual nanotubes, but also may create a roughened tube surface with an enhanced binding energy for hydrogen. Such an enhancement is needed to understand the strong adsorption at low pressure. We obtain an experimental isosteric heat qst = 125 ± 5 meV for processed SWNT materials.

AB - We report (6 wt %) storage of H2 at T=77 K in processed bundles of single-walled carbon nanotubes at P=2 atmospheres. The hydrogen storage isotherms are completely reversible. D2 isotherms confirm this anomalous low-pressure adsorption and further reveal the effects of quantum mechanical zero point motion. We propose that our post-synthesis treatment of the sample not only improves access for hydrogen to the central pores within individual nanotubes, but also may create a roughened tube surface with an enhanced binding energy for hydrogen. Such an enhancement is needed to understand the strong adsorption at low pressure. We obtain an experimental isosteric heat qst = 125 ± 5 meV for processed SWNT materials.

UR - http://www.scopus.com/inward/record.url?scp=0036350414&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036350414&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0036350414

SN - 0272-9172

VL - 706

SP - 331

EP - 336

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

ER -

Large cryogenic storage of hydrogen in carbon nanotubes at low pressures

Abstract

All Science Journal Classification (ASJC) codes

Other files and links

Fingerprint

Cite this