The potential of organic polymer-based hydrogen storage materials

Peter M. Budd; Anna Butler; James Selbie; Khalid Mahmood; Neil B. McKeown; Bader Ghanem; Kadhum Msayib; David Book; Allan Walton

doi:10.1039/b618053a

The potential of organic polymer-based hydrogen storage materials

Peter M. Budd^*, Anna Butler, James Selbie, Khalid Mahmood, Neil B. McKeown, Bader Ghanem, Kadhum Msayib, David Book, Allan Walton

^*Corresponding author for this work

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

195 Citations (SciVal)

Abstract

The challenge of storing hydrogen at high volumetric and gravimetric density for automotive applications has prompted investigations into the potential of cryo-adsorption on the internal surface area of microporous organic polymers. A range of Polymers of Intrinsic Microporosity (PIMs) has been studied, the best PIM to date (a network-PIM incorporating a triptycene subunit) taking up 2.7% H₂ by mass at 10 bar/77 K. HyperCrosslinked Polymers (HCPs) also show promising performance as H₂ storage materials, particularly at pressures >10 bar. The N₂ and H₂ adsorption behaviour at 77 K of six PIMs and a HCP are compared. Surface areas based on Langmuir plots of H₂ adsorption at high pressure are shown to provide a useful guide to hydrogen capacity, but Langmuir plots based on low pressure data underestimate the potential H₂ uptake. The micropore distribution influences the form of the H₂ isotherm, a higher concentration of ultramicropores (pore size <0.7 nm) being associated with enhanced low pressure adsorption.

Original language	English (US)
Pages (from-to)	1802-1808
Number of pages	7
Journal	Physical Chemistry Chemical Physics
Volume	9
Issue number	15
DOIs	https://doi.org/10.1039/b618053a
State	Published - 2007
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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title = "The potential of organic polymer-based hydrogen storage materials",

abstract = "The challenge of storing hydrogen at high volumetric and gravimetric density for automotive applications has prompted investigations into the potential of cryo-adsorption on the internal surface area of microporous organic polymers. A range of Polymers of Intrinsic Microporosity (PIMs) has been studied, the best PIM to date (a network-PIM incorporating a triptycene subunit) taking up 2.7% H2 by mass at 10 bar/77 K. HyperCrosslinked Polymers (HCPs) also show promising performance as H2 storage materials, particularly at pressures >10 bar. The N2 and H2 adsorption behaviour at 77 K of six PIMs and a HCP are compared. Surface areas based on Langmuir plots of H2 adsorption at high pressure are shown to provide a useful guide to hydrogen capacity, but Langmuir plots based on low pressure data underestimate the potential H2 uptake. The micropore distribution influences the form of the H2 isotherm, a higher concentration of ultramicropores (pore size <0.7 nm) being associated with enhanced low pressure adsorption.",

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T1 - The potential of organic polymer-based hydrogen storage materials

AU - Budd, Peter M.

AU - Butler, Anna

AU - Selbie, James

AU - Mahmood, Khalid

AU - McKeown, Neil B.

AU - Ghanem, Bader

AU - Msayib, Kadhum

AU - Book, David

AU - Walton, Allan

PY - 2007

Y1 - 2007

N2 - The challenge of storing hydrogen at high volumetric and gravimetric density for automotive applications has prompted investigations into the potential of cryo-adsorption on the internal surface area of microporous organic polymers. A range of Polymers of Intrinsic Microporosity (PIMs) has been studied, the best PIM to date (a network-PIM incorporating a triptycene subunit) taking up 2.7% H2 by mass at 10 bar/77 K. HyperCrosslinked Polymers (HCPs) also show promising performance as H2 storage materials, particularly at pressures >10 bar. The N2 and H2 adsorption behaviour at 77 K of six PIMs and a HCP are compared. Surface areas based on Langmuir plots of H2 adsorption at high pressure are shown to provide a useful guide to hydrogen capacity, but Langmuir plots based on low pressure data underestimate the potential H2 uptake. The micropore distribution influences the form of the H2 isotherm, a higher concentration of ultramicropores (pore size <0.7 nm) being associated with enhanced low pressure adsorption.

AB - The challenge of storing hydrogen at high volumetric and gravimetric density for automotive applications has prompted investigations into the potential of cryo-adsorption on the internal surface area of microporous organic polymers. A range of Polymers of Intrinsic Microporosity (PIMs) has been studied, the best PIM to date (a network-PIM incorporating a triptycene subunit) taking up 2.7% H2 by mass at 10 bar/77 K. HyperCrosslinked Polymers (HCPs) also show promising performance as H2 storage materials, particularly at pressures >10 bar. The N2 and H2 adsorption behaviour at 77 K of six PIMs and a HCP are compared. Surface areas based on Langmuir plots of H2 adsorption at high pressure are shown to provide a useful guide to hydrogen capacity, but Langmuir plots based on low pressure data underestimate the potential H2 uptake. The micropore distribution influences the form of the H2 isotherm, a higher concentration of ultramicropores (pore size <0.7 nm) being associated with enhanced low pressure adsorption.

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The potential of organic polymer-based hydrogen storage materials

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