Achieving Wide-Temperature-Range Physical and Chemical Hydrogen Sorption in a Structural Optimized Mg/N-Doped Porous Carbon Nanocomposite
Shanghai Jiao Tong University · University of Cambridge · +1 more institution
Abstract
Abstract Nanoconfinement is a promising approach to simultaneously enhance the thermodynamics, kinetics, and cycling stability of hydrogen storage materials. The introduction of supporting scaffolds usually causes a reduction in the total hydrogen storage capacity due to “dead weight.” Here, we synthesize an optimized N-doped porous carbon (rN-pC) without heavy metal as supporting scaffold to confine Mg/MgH 2 nanoparticles (Mg/MgH 2 @rN-pC). rN-pC with 60 wt% loading capacity of Mg (denoted as 60 Mg@rN-pC) can adsorb and desorb 0.62 wt% H 2 on the rN-pC scaffold. The nanoconfined MgH 2 can be chemically dehydrided at 175 °C, providing ~ 3.59 wt% H 2 with fast kinetics (fully dehydrogenated at 300 °C within 15…
Citation impact
- FWCI
- 24.91
- Percentile
- 99%
- References
- 99
Authors
8Topics & keywords
- Hydrogen storage
- Desorption
- Adsorption
- Porosity
- Carbon nanotube
- Sorption
- Nanocomposite
- Carbon fibers