Details

Autor(en) / Beteiligte

• Gharehkhani, Samira
• Seyed Shirazi, Seyed Farid
• Pilban Jahromi, Siamak
• Sookhakian, Mehran
• Baradaran, Saeid
• Yarmand, Hooman
• Ataollahi Oshkour, Azim
• Kazi, Salim Newaz
• Basirun, Wan Jefrey

Titel

Spongy nitrogen-doped activated carbonaceous hybrid derived from biomass material/graphene oxide for supercapacitor electrodesElectronic supplementary information (ESI) available. See DOI: 10.1039/c5ra01525a

Erscheinungsjahr

2015-05

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Carbon derived from low cost agricultural waste material was used as a precursor for the preparation of a spongy-like nitrogen doped activated composite from carbon/graphene oxide via a one-step thermal treatment. N-doping and activation of the carbon/graphene oxide mixture were achieved simultaneously by the treatment of urea and potassium hydroxide at 800 °C. The nitrogen content and ratio between the nitrogen species was controlled by the mass ratio of KOH : carbon. The composite was prepared with a KOH : carbon ratio of 1 which resulted in a moderate surface area (1712.4 m 2 g −1 ) and a high nitrogen content (14.51%). The hybrid material gave high specific capacitance (267 F g −1 at 5 mV s −1 ) and good cycling stability (92.3% capacitance retention after 5000 cycles) in 6 M KOH electrolyte. Hence, the new composite presented in this work can be used as an advanced material for supercapacitor applications. A nitrogen doped and activated material with spongy-like structure containing a low cost carbon derived from the waste agricultural material and graphene oxide is synthesized via facile thermal treatment for supercapacitor applications.