Explosion Synthesis For Nanometer Lithium Iron Phosphate

The main research work of this article is following, firstly, explosion synthesis for Nano Lithium Iron Phosphate (LFP) battery cathode material; secondly, for characterization analysis, thermal stability analysis and preliminary study on electrochemical properties of nano powder LFP materials, at the same time study on the the special explosive by experiment and theoretical calculation of detonation parameters.LFP due to its unique peridot spatial structure, and the advantages of stable and highlights electrochemical performance, make it widely promotion and useing in the power battery field. In order to improve the physical and electrochemical properties of the material, through a novel preparation method to build material particle size and apparent morphology. In order to synthesis the green battery materials, in the experimental using explosion synthesis method for preparing nano and a spherical morphology of LFP powder material; in the explosion synthesis experiments, compares the relationship of the different parameters of detonation, precursor and other critical experimental parameters with the material phase purity, surface morphology and material performance.Through the comprehensive analysis and material performance test, obtained certain research results, XRD detection results show that through the reasonable configuration can use explosive explosion method to obtain LFP powder; TEM transmission characterization analysis show that the prepared material granularity reach nanometer level; thermal analysis of the experimental results show that the synthesized LFP comparison thermal stability is higher, found its mass and heat flow in the high temperature range are not changed; finally, rendering explosion product generation process schematic drawing of the detonation reaction zone, namely the explosion products in detonation reaction zone bond and crystal, in the explosive expansion area grew up, at the same time, based on theoretical calculations have also been confirmed, namely through the calculation of nanometer LFP particles growth time proved that the explosion products in detonation reaction zone formed therein, the calculation results show that the15nm LFP spherical particles generation time value of2.07*10-7s, perfectly in detonation reaction zone length of time (about10-6s). Discuss the control manipulating of explosive synthetic method, based on the same formula of composite explosive experiments on several samples of the XRD diffraction analysis detected, the detected results show that phases are basically consistent, namely the detonation parameters and precursor is determined in explosion, also with the identified, demonstrated the controllability of explosive products fairly stable, and provides solid experimental basis data for the explosion synthesis industrialization.