Investigation and Determination of Humidity, Pressure and Grinding Time on Improvement of Silicon Carbide Density and Mechanical Properties
Subject Areas :
علی رضا رحمانی
1
,
Mehdi Khodaei
2
*
1 - Ph.D. Candidate, Department of Materials Science and Engineering, K.N. Toosi University of Technology, Tehran, Iran.
2 - Associate Professor, Department of Materials Science and Engineering, K.N. Toosi University of Technology, Advanced Materials and Nanotechnology Research Lab, Faculty of Materials Science and Engineering, K. N. Toosi University of Technology, Materonics and Materionics Research Group, K. N. Toosi University of Technology, Tehran, Iran.
Keywords: Humidity Percentage Press Pressure Grinding Time Mechanical Properties Silicon Carbide.,
Abstract :
In the field of alternative anode materials for graphite, titanium niobate material with TiNb2O7 stoichiometry and monoclinic crystal structure is one of the interesting cases. This material has a high potential for lithium, which in turn causes intrinsic safety and prevents the reduction of lithium ions in the form of metal dendrites. Also, the specific mass capacity of this material is comparable to graphite, which makes it suitable for practical applications. In this research, the sol-gel approach based on evaporation has been used for the synthesis of titanium niobate nanostructure with F127 copolymer as the structure directing agent. The resulting double oxide ceramic is a semi-conductor and can be stimulated by ultraviolet light to create charge carriers and bring them to the surface. By using this phenomenon, silver nanoparticles are preferentially decorated on electron accumulation centers as a component to increase surface conductivity. The obtained samples have been characterized using different methods such as powder X-ray diffraction, Fourier transform infrared transmission, scanning electron microscopy, elemental analysis in the form of X-ray energy spectrum and diffuse reflection spectroscopy. Also, half-coin batteries were made using the resulting materials, and under the galvanostatic capacitance test, it was found that by decorating the surface electron accumulation centers with silver nanoparticles, the capacity of the resulting battery can be increased by more than 2.5 times in terms of charge and discharge rates. raised up.
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