Trading System Development on Foreign Exchange Market

Developing a system/strategy to earn stable profits in Forex market is always widely concerned by traders. In order to give the field traders a better opportunity to earn profits, a system was developed being aimed at Forex market. The trading system on Forex market was based on KDJ and MACD indicator, pattern analysis and evolutionary analysis. The system/strategy shown considerable feasibility in operation and capability in profit-gaining

Tin Nanoparticles Encapsulated in Hollow TIO2 Spheres as High Performance Anode Materials for Li-Ion Batteries

Tin, an anode material with a high capacity for lithium-ion batteries, has poor cyclic performance because of the high volume expansion upon lithiation. Based on a literature review of the applications of lithium-ion batteries and current research progress of the tin-based anode materials for lithium-ion batteries, we developed a method to synthesize hollow TiO2 spheres with tin nanoparticles anchored on the inner surface of the TiO2 shell. Such a unique tin/TiO2 composite alleviates the volume change of tin–based anode materials in charge-discharge processes. SnCl2·2H2O (Tin (II) chloride dihydrate) and titanium (IV) isopropoxide (TIPT) were used as the Sn source and the Ti source, respectively, while CaCO3 was used as a template to fabricate the TiO2 hollow shell. A variety of modern material testing methods (XRD, SEM, XPS, Raman, BET, etc.) and electrochemical measurements such as galvanostatic charge-discharge and cyclic voltammetry (CV) testing were employed to systematically study effects of various synthesis parameters on the structure and battery performance of the as-prepared materials. We also discussed the key factors influencing the cycle performance of the composite electrode material and the related mechanism