Journal article
Carbide‐Derived Carbons: Effect of Pore Size on Hydrogen Uptake and Heat of Adsorption
Advanced functional materials, v 16(17), pp 2288-2293
Nov 2006
Abstract
Cryoadsorption is a promising method of enhancing gravimetric and volumetric onboard H2 storage capacity for future transportation needs. Inexpensive carbide‐derived carbons (CDCs), produced by chlorination of metal carbides, have up to 80 % open‐pore volume with tunable pore size and specific surface area (SSA). Tuning the carbon structure and pore size with high sensitivity by using different starting carbides and chlorination temperatures allows rational design of carbon materials with enhanced C–H2 interaction and thus increased H2 storage capacity. A systematic experimental investigation of a large number of CDCs with controlled pore size distributions and SSAs shows how smaller pores increase both the heat of adsorption and the total volume of adsorbed H2. It has been demonstrated that increasing the average heat of H2 adsorption above 6.6 kJ mol–1 substantially enhances H2 uptake at 1 atm (1 atm = 101 325 Pa) and –196 °C. The heats of adsorption up to 11 kJ mol–1 exceed values reported for metal–organic framework compounds and carbon nanotubes.
High‐sensitivity tuning the carbon structure and pore size with the technology of carbide‐derived carbons (CDCs) allows the rational design of carbon materials with enhanced C–H2 interaction. Increasing the average heat of H2 adsorption above 6.6 kJ mol–1 substantially enhances H2 uptake at 1 atm and –196 °C (see figure). These optimized CDCs have a higher volumetric and gravimetric storage capacity compared to benchmark activated carbon, and other typical hydrogen‐storage materials.
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Details
- Title
- Carbide‐Derived Carbons: Effect of Pore Size on Hydrogen Uptake and Heat of Adsorption
- Creators
- G YushinR DashJ JagielloJ. E FischerY Gogotsi
- Publication Details
- Advanced functional materials, v 16(17), pp 2288-2293
- Publisher
- WILEY‐VCH Verlag; Weinheim
- Number of pages
- 6
- Grant note
- US Department of Energy (DE-FC36-04GO14282) Penn Regional Nanotechnology Facility, University of Pennsylvania
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000242314700012
- Scopus ID
- 2-s2.0-33751039508
- Other Identifier
- 991014877783504721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied
- Physics, Condensed Matter