Abstract:
For efficient use of metal oxides, such as MnO2 and RuO2, in pseudocapacitors and other electrochemical applications, the poor conductivity of the metal oxide is a major problem To cackle the problem. we have designed a ternary nanocomposhe film composed of metal oxide (MnO2), carbon nanotube (CNT), and conducting polymer (CP) Each component in the MnO2/CNT/CP film provides unique and critical function to achieve optimized electrochemical properties The electrochemical performance of the film is evaluated by cyclic voltammetry. and constant-current charge/discharge cycling techniques Specific capacitance (SC) of the ternary composite electrode can reach 427 F/g Even at high mass loading and high concentration of MnO2 (60%), the film still showed SC value as high as 200 Fig The electrode also exhibited excellent charge/discharge rate and good cycling stability, retaining over 99% of its initial charge after 1000 cycles The results demonstrated that MnO2 is effectively utilized with assistance of other components (fFWNTs and poly(3.4-ethylenedioxythlophene) poly(styrenesulfonate) in the electrode Such ternary composite is very promising for the next generation high performance electrochemical supercapacitors
