Compressible aligned carbon nanotube/MnO₂ as high-rate electrode materials for supercapacitors

Xiao, Ying; Zhang, Qiang; Yan, Jun; Wei, Tong; Fan, Zhuangjun; Wei, Fei

Compressible aligned carbon nanotube/MnO₂ as high-rate electrode materials for supercapacitors

2012

Aligned carbon nanotube (ACNT)/MnO₂ nanocomposites were fabricated using the reduction between potassium permanganate and ACNT under the microwave irradiation. Due to good contact between ACNT and current collector during the charge/discharge process, compressible ACNT/MnO₂ nanocomposites show better electrochemical properties compared to pure MnO₂ and ACNT, such as high specific capacitance, good rate performance and cycling stability (2.7% loss of the initial value after 3000 cycles). These results demonstrate that ACNT/MnO₂ nanocomposites have potential application for supercapacitors as high-rate electrode materials.

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