A direct and quantitative image of the internal nanostructure of nonordered porous monolithic carbon using FIB nanotomography

Summary A direct study of the shape, size and connectivity of nonordered pores in carbon materials is particularly challenging. A new method that allows direct three‐dimensional (3D) investigations of mesopores in monolithic carbon materials and quantitative characterization of their physical properties (surface area and pore size distribution) is reported. Focused ion beam (FIB) nanotomography technique is performed by combination of focused ion beam and scanning electron microscope. Porous monolithic carbon is produced by carbonization of a resorcinol‐formaldehyde gel in the presence of a cationic polyelectrolyte as a pore stabilizer.