Journal article
Enhanced methane storage of chemically and physically activated carbide-derived carbon
Journal of power sources, v 191(2), pp 560-567
2009
Abstract
Carbide-derived carbons (CDCs) produced by chlorination of carbides offer great potential for precise pore size control at the atomic level, making them attractive candidates for energy storage media. CDCs activated with CO
2 or KOH possess distinct improvements in porosity, displaying specific surface areas above 3000
m
2
g
−1 and pore volumes above 1.3
cm
3
g
−1. These correspond to gravimetric methane uptake of 16
wt% at 35
bar and 25
°C, close to the currently best reported material PCN-14, a metal-organic framework (MOF), at 35
bar and 17
°C or KOH activated anthracite at 35
bar and 25
°C. The best excess gravimetric methane uptake is obtained with a TiC-derived CDC activated with CO
2 at 975
°C for 2
h, namely a very large surface area of 3360
m
2
g
−1 resulting in 18.5
wt% at 25
°C and 60
bar. To obtain realistic volumetric methane capacity, the packing density of completely dried CDC was measured, from which we obtain excess capacity of 145
v(STP)
v
−1 from CDC activated with CO
2 at 875
°C for 8
h, 81% of the DOE target (180
v(STP)
v
−1) at 35
bar and 25
°C. From small-angle X-ray scattering (SAXS) measurements, pore radii of gyration (
R
g
) between 0.5
nm and 1
nm are determined. Temperature-dependent methane isotherms show that the isosteric heat of adsorption reaches 24
kJ
mol
−1 at the initial stage of low loading.
Metrics
Details
- Title
- Enhanced methane storage of chemically and physically activated carbide-derived carbon
- Creators
- Sun-Hwa Yeon - Department of Materials Science and Engineering and A.J. Drexel Nanotechnology Institute, Drexel University, Philadelphia, PA 19104, USASebastian Osswald - Department of Materials Science and Engineering and A.J. Drexel Nanotechnology Institute, Drexel University, Philadelphia, PA 19104, USAYury Gogotsi - Department of Materials Science and Engineering and A.J. Drexel Nanotechnology Institute, Drexel University, Philadelphia, PA 19104, USAJonathan P Singer - Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA 19104, USAJason M Simmons - NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899-6102, USAJohn E Fischer - Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA 19104, USAMaría A Lillo-Ródenas - Departamento de Química Inorgánica, Universidad de Alicante, Ap. correos 99, E-03080, Alicante, SpainÁngel Linares-Solano - Departamento de Química Inorgánica, Universidad de Alicante, Ap. correos 99, E-03080, Alicante, Spain
- Publication Details
- Journal of power sources, v 191(2), pp 560-567
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000266673000050
- Scopus ID
- 2-s2.0-65649130139
- Other Identifier
- 991014877774704721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Electrochemistry
- Energy & Fuels
- Materials Science, Multidisciplinary