Preparation of Macroporous Conductive Carbon Aerogels from Pyrolysis of Isocyanate-Crosslinked Resorcinol Formaldehyde Aerogels
Carbon aerogels, a new class of nanostructured porous materials, are derived from organic precursors like resorcinol-formaldehyde (RF) aerogels via pyrolysis. Both mesoporous and macroporous carbon aerogels are used in many commercial applications such as separating media in HPLC columns, supercapacitors, as anodes in lithium batteries, as non reflective materials, and as new materials for hydrogen storage. In order to incorporate macroporosity, typically, templating agents like mesoporous silica or polymer beads are being used. Here, we present the crosslinking of resorcinol formaldehyde gels with isocyanate oligomers for preparation of carbon aerogels in a time efficient process that does not involve the use of templating agents. The carbon aerogels thus prepared exhibit macroporosity and enhanced electrical conductivity.
S. Mulik et al., "Preparation of Macroporous Conductive Carbon Aerogels from Pyrolysis of Isocyanate-Crosslinked Resorcinol Formaldehyde Aerogels," Abstracts of Papers of the American Chemical Society, American Chemical Society (ACS), Apr 2008.
235th ACS National Meeting (2008: Apr. 6-10, New Orleans, LA)
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01 Apr 2008