Single-walled Carbon Nanotubes as Electrode Materials for Supercapacitors

• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2006,（11）
• 页码范围: 1505-1508
• 页数: 4页
• 语种: 英文

摘要

Large-scale synthesized single-walled carbon nanotubes (SWNT) prepared by electric arc discharge method and a mixture of NiO and Y2O3 as catalyst have been used as electrode materials for supercapacitors. N2 adsorption/desorption measurement shows that the SWNT is a microporous and mesoporous material with specific surface area 435 m2g1.Thespecific capacitance of the nitric acid treated SWNT in aqueous electrolyte reaches as high as 105 F/g, which is a combination of electric double layer capacitance and pseudocapacitance. The SWNT-based capacitors also have good charge/discharge reversibility and cycling perdurability.