Publications [#232838] of Jie Liu

Journal Articles

1. Cheng, Y; Zhang, H; Lu, S; Zhan, S; Varanasi, C; Liu, J, One-pot synthesis of functionalized few-walled carbon nanotube/MnO 2 composite for high performance electrochemical supercapacitors, in Materials Challenges in Alternative and Renewable Energy II: Ceramic Transactions, edited by G. Wicks, J. Simon, R. Zidan, R. Brigmon, G. Fischman, S. Arepalli, A. Norris and M. McCluer, Ceramic Transactions, vol. 239 (January, 2013), pp. 271-281, John Wiley & Sons, Inc., Hoboken, NJ, USA, ISSN 1042-1122 [doi]
   (last updated on 2026/01/15)

   Abstract:
   In this paper, we described a one-pot approach to synthesize functionalized few-walled carbon nanotubes (fFWNTs)/MnO2 composite for high performance electrochemical supercapacitor by mixing raw FWNTs with KMnO 4 under acidic condition. This approach combines the purification and functionalization of FWNTs and the synthesis of fFWNTs/MnO2 composite in one step. The electrochemical performance of the composite was evaluated by cyclic voltammetry and galvanostatic charge-discharge techniques. The results indicate that the composite with 51wt% of MnO2 has the high specific capacitance of 253 F/g (496 F/g based on MnO2) at 10 mV/s and 176 F/g at the high scan rate of 500 mV/s (66% retention), indicating improved specific capacitance and excellent rate capability. Furthermore, the composite show superior electrochemical stability over 2000 charge/discharge cycles at the current density of 5 A/g. Therefore, this simplified one-pot approach of making the fFWNT/MnO2 composite show high promises towards practical application in supercapacitors.