| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1288961 | Journal of Power Sources | 2011 | 4 Pages |
Chemical modification of graphene nanosheets by KOH was examined as a way to enhance the specific capacity of graphene nanosheets in supercapacitor. Fourier transform infrared spectroscopy, Raman spectroscopy and X-ray photoelectron spectroscopy were used to investigate the effects of the treatment on the surface of the graphene nanosheets. The specific capacitance of 136 F g−1 was obtained for KOH treated graphene by integration of the cyclic voltammogram, an increase of about 35% compared with that for the pristine graphene nanosheets.
► Graphene nanosheets modified by KOH treatment were used as supercapacitor materials. ► Some oxygen-containing functional groups were introduced by KOH treatment. ► The KOH treatment led to the improved electrochemical performance of graphene nanosheets.
