Preparation and application in the energy field of Ag nanoparticle (NP) doped fullerenol have been investigated. Ag NP doped fullerenol is prepared using the electrostatic self-assembly method followed by a pyrolysis process, and characterized by Fourier transformation intermediate infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy(TEM), galvanostatic charge/discharge cycling, and cyclic voltammograms (CV). Experimental results indicate that Ag NP doped fullerenol exhibits an initial discharge capacity of 389 mAh·g −1 during galvanostatic charge/discharge cycling, and maintains a discharge capacity of 283 mAh·g −1 at a current density of 50 mA·g −1 after 50 cycles. The doped product is a mixture of fullerenol and Ag NPs, which distributes among the sample and acts as an electrical conductor in the discharge/charge process. The discharge/charge mechanism is a reversible formation of Li n (C 60 O 10 ) and liberation of Li + from this Li metallized compound. It is therefore believed this material can be used as an anode for lithium ion battery application. ■ INTRODUCTIONFullerenes C 60 and their derivatives have attracted much attention from the research community in recent years, because of their potential applications in superconductors, 1 optical devices, 2 microsensors, 3,4 and polymer-based solar cells. 5 Much work has been done on the electrochemical property of the fullerene because it provides information about the energetics and kinetics of electron-transfer processes and chemical reactions associated with them. For example, Luis Echegoyen 6 and Karl M. Kadish 7 reported the reversible electrochemical reduction processes for C 60 , which leads to C 60 (n+1) (n = 1, 2, ..., 5). The existence of anionic C 60 is inferred from the formation of species such as alkali metal doped C 60 , which can be synthesized by the electrochemical intercalation of alkali metals into C 60 thin film. This electrochemical intercalation technique provides another synthetic route to alkali-metal-intercalated fullerites M x C 60 8,9 in addition to traditional chemical methods. 10−12 Fullerene C 60 electrode has been successfully intercalated with lithium. 13−15 These achievements revealed the high possibility of the electrochemical Li + intercalation into the C 60 film in electrolyte solution of lithium-ion batteries. However, little progress in fact, though many efforts have been paid for the application of C 60 in the field of anode materials for lithium-ion batteries, has been made. The main cause of this disappointment was probably the poor electrochemical reversibility of C 60 electrode. 16 Thus, we tried to solve the problem by doping metal Ag into fullerene molecules to improve their conductivity. However, the hydrophobicity prevents these molecules from accomplishing doping with AgNO 3 in water. Therefore, fullerenol is undoubtedly the appropriate species for conductive treatment and further study of possible application in the field of lithium ion battery. However, high temperature tr...

Using metallurgical grade aluminum hydroxide as the raw material self-dispersed g-AlOOH nanopowders were made by sol-hydrothermal crystallization and the charge process. The AlOOH/polyimide nanocomposite membrane was prepared by compounding soluble polyamide with AlOOH using sol dispersed quasi-homogeneous blending and compounding method. TEM, XRD, IR and other techniques were employed to characterize AlOOH nanopowders and AlOOH/polyimide nanocomposite membranes, respectively. The results showed that: the particle size of AlOOH crystal was about 70nm, with good self-dispersion in water and some organic solvents; in the polyimide matrix, the AlOOH was dispersed at nanoscale, without agglomeration; when its content in composite membrane reached 15 %, it still had a good dispersion and transmission property.