Carbon nanostructures presenting charge-transfer behavior (e.g. fullerene) can display high affinity to hydrogen and are promising materials for reversible hydrogen storage. Corannulene (C20H10) is a bowl shaped molecule which is 1/3 of C60 (fullerene) and, similar to it, can be intercalated by alkali metals, forming charge-tranfer salts.Muon spin spectroscopy (µSR) has proved to be essential in the investigation of hydrogenation mechanisms in intercalated fullerenes and we recently found a similar µSR behavior in C20H10. This proposal seeks to shed more light on the C-H radicals formation in C20H10 when this is hydrogenated and the results will be useful in further studies of alkali intercalated C20H10 compounds for hydrogen storage applications.