Applied Mechanics and Materials Vol. 733

Abstract: In order to solve the problem of storage capacity configuration in distributed photovoltaic energy, firstly a brief introduction of the storage methods in distributed PV (photovoltaic) energy is given out. Then it mainly discusses the configuration mode of distributed photovoltaic battery energy storage capacity within a variety of methods and principles of the research situation. And their advantages and disadvantages are analyzed in detail. Finally, the energy storage capacity configuration problems to be solved in the future development and its application should be made to focus on the aspect shortly.

Abstract: Based on the CHEMKIN software, a model of the reforming chamber was built to simulate the on-board fuel reforming process in a Homogeneous Charge Compression Ignition (HCCI) engine. The effects of the initial pressure and temperature of the chamber on the reformed gas were studied. The results show that the main species in the reformed gas are H2 and CO. This paper investigated the effect of initial temperature on the reformed gas, in order to get the optimum initial temperature. Under the optimum initial temperature (1300 K), some important conclusions have been drawn by changing initial pressures of the chamber. Initial pressure may have great effect on other species, but has a small effect on mole fractions of H2 and CO. By comparing the concentrations of H2 and CO between low and high initial pressures under the optimum initial temperature, it can be concluded that H2 and CO are still the main species in the reformed gas.

Abstract: Using 3.5 G PAMAM as a stabilizing agent, CdS/Au nanocomposites have been prepared by reducing HAuCl4 with microwave irradiation. CdS/Au nanocomposites were characterized by UV-vis spectra, TEM and Fluorescence spectroscopy. The result shows that: the CdS / Au nanocomposites’ particle diameter which has been prepared by using 3.5 G PAMAM gradually become larger and fluorescence fade as the ratio of CdS to Au was decreased.

Abstract: The zero-gap and low absorption in visible light spectrum has limited the potential of graphene potential in photoelectric applications. Two-dimensional (2D) heterostructures have grown up in recent years showing attractive prospects in making new materials with designed properties, and become a promising way to modulate properties of graphene. Recent research progress in 2D heterostructures, including the varieties and properties of van der waals and non-van der waals graphene-based 2D heterostructures separately, is reviewed in this paper. Then the photoelectric applications of graphene-based 2D heterostructures are summarized.

Abstract: The pyrolysis kinetics of Chinese oil shale and its kerogen was investigated using thermo gravimetric analysis (TGA) in this paper. Experiments were performed at four different heating rates of 10, 15, 20 and 25°C/min from ambient temperature to 560 °C at nitrogen flux with 60ml/min. The results demonstrated that the thermal decomposition of oil shale and its kerogen involved three degradation steps. Different thermo gravimetric data were analyzed by Friedman procedure. The values of apparent activation energy E of oil shale ranged from 160kJ/ mol to 240kJ/mol, but these of kerogen were in the range of 150kJ/mol to 240kJ/mol. It was found that the plot of lnA versus E became a linear line with a regression coefficient of 0.99.

Abstract: In the process of aluminum smelting and removing slag, it is difficult for the slag to be removed as the dross is trivial; meanwhile, a large amount of aluminum is carried out with slag. On the basis of analyzing of slag agent, Na2SiF6, Na2AlF6, NaF is added, such as molten salt, and through orthogonal experiment and test the effect of slag and slag polyethylene, polyethylene slag agent to finalize the optimum composition ratio, the effective of cleaning and removing slag is improved.

Abstract: Along with the widespread use of food wrap paper, it is very important to discuss the migration of lead in paper. The migration of lead from six kinds of food wrap papers under different temperatures (5 °C, 25°C, 35°C, 60°C and 85°C) were investigated by using water as an imitation in this paper. It was found that the initial migration rate was affected by the sizing degree of paper, but the final migration ratio was mainly decided by initial concentration of lead in paper, and the migration rate increased with the increasing of temperature.

Abstract: The concept of giant magnetostrictive material, characteristics and main effects were introduced briefly. The actuators based on GMM’s magnetostrictive effect, sensors based on inverse-magnetostrictive effect and self-sensing actuators based on the coupled effects were reviewed. It proposed that self-sensing actuators and sensor actuators on the basis of coupling relationship of magnetostrictive effect, inverse-magnetostrictive effect and other effects were GMM’s new research direction.

Abstract: The development trend of all solid state lithium ion battery and the importance of lithium ion solid electrolyte in all solid state lithium ion batteries is introduced in this paper. The application of rare earth doping in solid electrolyte of lithium ion battery is summarized. We suggest that rare earth doping is favorable for the increase of the lithium ion battery electrolyte conductivity, thus it is beneficial to further improve the overall performance of all solid state lithium ion battery. The development prospect of rare earth doping in solid electrolyte of all solid state lithium ion battery is looked forward. In addition, we deem that the above mentioned technology is an important research aspect of solid state electrolyte.

Abstract: La-doped ZnO nanofibers were fabricated via electrospinning and calcination at 800°C. The surface morphology and crystal structure of the La-doped ZnO nanofibers were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The photoelectric properties of La-doped ZnO nanofibers were also investigated. It was found that the photoelectric current increased obviously under light illumination (308 nm and 365 nm). However, the photocurrent reduced with increasing La-doping level, which may be ascribed to the increased defects inducing by La-doping.