Quantification of thin graphene sheets contained in spherical aggregates of single-walled carbon nanohorns

► Thin graphene sheets (TGSs) were produced with single-walled carbon nanohorn (SWNHs). ► It was found that TGS and SWNH combusted at different temperatures in high resolution thermogravimetric analysis, which enabled TGS quantification. ► Success of TGS quantification will be useful in optimization of preparation condition for a large quantity production of TGS.