Carbon meringues derived from flavonoid tannins

New macro-cellular carbons, called carbon meringues, have been prepared by whipping until stiff an aqueous solution of tannin until liquid foam was obtained, which was next stabilized in an oven and pyrolysed, hence their name. With such cheap, fast and very easy process, flawless, homogeneous carbon foams were obtained in a wider range of density than that of more conventional cellular vitreous carbon (CVC) foams derived from similar...