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Advanced Carbon Aerogels for Energy Applications
Figure 3.2 The most promising emerging energy-related applications of
CAs are hydrogen and electrical energy storage, desalination,
and their use as catalytic supports. (a) Hydrogen uptake at 77
K in activated CAs scales linearly with the BET surface area
up to 2,500 m
2
/g, yielding gravimetric densities up to 5 wt%
hydrogen and volumetric capacities up to 29 g hydrogen/L.
CAs can also store electrical energy using the EDL phenomena,
which relies on the accumulation of ions on the surface
of the material. The EDL phenomena can also be used for
desalination using capacitive deionization technology ...