Presenting highest supercapacitance for TiO2/MWNTs nanocomposites: Novel method

A facile two step, binder-free method is successfully developed for the synthesis of TiO2 nanodots on the walls of multi-walled carbon nanotubes (MWNTs). TiO2/MWNTs nanocomposite exhibited excellent specific capacitance and stability as supercapacitor electrode materials due to the synergistic effect of both components as well as the nanodots-like structure of TiO2, which increases the specific surface area of the nanocomposite. The TiO2/MWNTs prepared by this binder-free approach yields the largest specific and interfacial capacitances of 329Fg-1 and 52mFcm-2 at a scan rate of 0.005Vs-1, which is the utmost value of capacitance obtained till date. Importantly, TiO2/MWNTs showed remarkable rate capability with 6mFcm-2 capacitance at higher scan rate (0.4Vs-1) with good long-term cycling stability. The Ragone plot of TiO2/MWNTs nanocomposite discovers better power and energy density values. Lastly, the method used here is promising for producing high performance supercapacitors which can be scalable for large area application for industrial route

Zinc oxide encapsulated carbon nanotube thin films for energy storage applications

Thin films of zinc oxide (ZnO) nanodots decorated onto the multiwalled carbon nanotubes (MWNTs) were prepared by simple and inexpensive two-step chemical method which includes 'dip and dry' process followed by successive ionic layer adsorption and reaction (SILAR) method. The as-prepared ZnO/MWNTs (ZCN) composite films were characterized with different physicochemical techniques. The surface morphological analysis shows that the ZnO nanodots with average size less than 15 nm get uniformly decorated onto the MWNT walls. Furthermore, the electrochemical analysis carried out for ZCN composites suggests that these are the efficient electrodes for electrochemical charge-storage applications.BRS would like to thank the SERB project, Govt. of India (Do. No: SB/S2/CMP/032/2013; 04/06/2013).Peer Reviewe

Zinc Oxide Encapsulated Carbon Nanotube Thin Films for Energy Storage Applications

Thin films of zinc oxide (ZnO) nanodots decorated onto the multiwalled carbon nanotubes (MWNTs) were prepared by simple and inexpensive two-step chemical method which includes 'dip and dry' process followed by successive ionic layer adsorption and reaction (SILAR) method. The as-prepared ZnO/MWNTs (ZCN) composite films were characterized with different physicochemical techniques. The surface morphological analysis shows that the ZnO nanodots with average size less than 15 nm get uniformly decorated onto the MWNT walls. Furthermore, the electrochemical analysis carried out for ZCN composites suggests that these are the efficient electrodes for electrochemical charge-storage applications