skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Direct Evidence for Solid-like Hydrogen in a Nanoporous Carbon Hydrogen Storage Material at Supercritical Temperatures

Journal Article · · ACS Nano
 [1];  [2];  [1];  [1];  [1];  [3];  [4];  [1]
  1. Univ. of Bath (United Kingdom). Dept. of Chemical Engineering
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical and Engineering Materials Division
  3. Leibniz Inst. for New Materials (INM), Saarbrucken (Germany); Saarland Univ. (Germany). Dept. of Materials Science and Engineering
  4. Science and Technology Facilities Council (STFC), Oxford (United Kingdom). Rutherford Appleton Lab., ISIS Neutron Source

Here in this paper we report direct physical evidence that confinement of molecular hydrogen (H2) in an optimized nanoporous carbon results in accumulation of hydrogen with characteristics commensurate with solid H2 at temperatures up to 67 K above the liquid vapor critical temperature of bulk H2. This extreme densification is attributed to confinement of 112 molecules in the optimally sized micropores, and occurs at pressures as low as 0.02 MPa. The quantities of contained, solid-like H2 increased with pressure and were directly evaluated using in situ inelastic neutron scattering and confirmed by analysis of gas sorption isotherms. The demonstration of the existence of solid-like H2 challenges the existing assumption that supercritical hydrogen confined in nanopores has an upper limit of liquid H2 density. Thus, this insight offers opportunities for the development of more accurate models for the evaluation and design of nanoporous materials for high capacity adsorptive hydrogen storage.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1355879
Journal Information:
ACS Nano, Vol. 9, Issue 8; ISSN 1936-0851
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 46 works
Citation information provided by
Web of Science

References (39)

Dataset for "Direct Evidence for Solid-Like Hydrogen in a Nanoporous Carbon Hydrogen Storage Material at Supercritical Temperatures" dataset January 2015
Fundamental Equations of State for Parahydrogen, Normal Hydrogen, and Orthohydrogen journal September 2009
Extended and accurate determination of the melting curves of argon, helium, ice ( H 2 O ) , and hydrogen ( H 2 ) journal March 2000
Melting Line of Hydrogen at High Pressures journal April 2008
Hydrogen-storage materials for mobile applications journal November 2001
Recommendations for the characterization of porous solids (Technical Report) journal January 1994
Hydrogen Storage Materials book January 2011
Model for the hydrogen adsorption on carbon nanostructures journal April 2004
Characterization of H2 Binding Sites in Prototypical Metal−Organic Frameworks by Inelastic Neutron Scattering
  • Rowsell, Jesse L. C.; Eckert, Juergen; Yaghi, Omar M.
  • Journal of the American Chemical Society, Vol. 127, Issue 42, p. 14904-14910 https://doi.org/10.1021/ja0542690
journal October 2005
Neutron powder diffraction of metal-organic frameworks for hydrogen storage journal October 2008
Liquid-Like Hydrogen Stored in Nanoporous Materials at 50 K Observed by in Situ Neutron Diffraction Experiments journal February 2013
Neutron scattering and hydrogen storage journal November 2009
Vibrational Spectroscopy with Neutrons book June 2005
Importance of pore size in high-pressure hydrogen storage by porous carbons journal August 2009
Improving comparability of hydrogen storage capacities of nanoporous materials journal February 2012
The solid molecular hydrogens in the condensed phase: Fundamentals and static properties journal April 1980
Slow Neutron Scattering by Molecular Hydrogen and Deuterium journal August 1964
Lattice vibrations of para-hydrogen impurities in a solid deuterium matrix: An inelastic neutron scattering study journal November 2007
Analysis of hydrogen storage in nanoporous materials for low carbon energy applications journal January 2011
Supercritical hydrogen adsorption in nanostructured solids with hydrogen density variation in pores journal February 2013
Performance comparison of adsorption isotherm models for supercritical hydrogen sorption on MOFs journal February 2014
Increasing the Density of Adsorbed Hydrogen with Coordinatively Unsaturated Metal Centers in Metal−Organic Frameworks journal May 2008
Direct Observation of Hydrogen Adsorption Sites and Nanocage Formation in Metal-Organic Frameworks journal November 2005
Hydrogen Adsorption in a Highly Stable Porous Rare-Earth Metal-Organic Framework: Sorption Properties and Neutron Diffraction Studies journal July 2008
Hydrogen adsorption in a copper ZSM5 zeoliteAn inelastic neutron scattering study journal February 2007
Effect of oxygen functional groups on synthetic carbons on liquid phase oxidation of cyclohexanone journal July 2002
Modification of the surface chemistry of activated carbons journal January 1999
Understanding structure and porosity of nanodiamond-derived carbon onions journal April 2015
Influence of the structure of carbon onions on their electrochemical performance in supercapacitor electrodes journal August 2012
Tailoring of Nanoscale Porosity in Carbide-Derived Carbons for Hydrogen Storage journal November 2005
Carbide-Derived Carbons: Effect of Pore Size on Hydrogen Uptake and Heat of Adsorption journal November 2006
DFT-Based Prediction of High-Pressure H 2 Adsorption on Porous Carbons at Ambient Temperatures from Low-Pressure Adsorption Data Measured at 77 K journal March 2006
Molecular simulation of hydrogen adsorption in single-walled carbon nanotubes and idealized carbon slit pores journal January 1999
Modified potential theory for modeling supercritical gas adsorption journal June 2012
Hydrogen Confinement in Carbon Nanopores: Extreme Densification at Ambient Temperature journal September 2011
Fluid behaviour in narrow pores journal January 1986
Quantum rotation of hydrogen in single-wall carbon nanotubes journal October 2000
Neutron scattering study of H2 adsorption in single-walled carbon nanotubes journal November 2001
De novo synthesis of a metal–organic framework material featuring ultrahigh surface area and gas storage capacities journal September 2010

Cited By (8)

Quantification of ion confinement and desolvation in nanoporous carbon supercapacitors with modelling and in situ X-ray scattering journal January 2017
Diamond-Like Carbon Nanofoam from Low-Temperature Hydrothermal Carbonization of a Sucrose/Naphthalene Precursor Solution journal July 2017
Nanoporous polymer-based composites for enhanced hydrogen storage journal May 2019
Application of Experimental Design to Hydrogen Storage: Optimisation of Lignin-Derived Carbons journal December 2019
Spectroscopy of a rotating hydrogen molecule in carbon nanotubes journal January 2019
Ab initio modelling of molecular hydrogen rotation in the outside of carbon nanotubes journal December 2018
Hierarchical Metal–Organic Frameworks with Macroporosity: Synthesis, Achievements, and Challenges journal July 2019
Quantification of ion confinement and desolvation in nanoporous carbon supercapacitors with modelling and in situ X-ray scattering collection January 2017

Figures / Tables (3)