Nano LiBH4-SiO2 solid electrolyte and preparation method thereof

Abstract

The invention belongs to the technical field of material preparation, and particularly relates to a nano LiBH4-SiO2 solid electrolyte and a preparation method thereof. The method comprises the following steps: dewatering a mesoporous material SiO2; preparing a precursor LiH-mesoporous SiO2; preparing a bononizing agent Zn(BH4)2-LiCl; and preparing the nano LiBH4-SiO2. The loading rate of the lithium hydride and the proportion of the bononizing agent are regulated to control the synthesis of the nano LiBH4-mesoporous SiO2: the mass percent of the nano LiBH4 is 40-90%, and the mass percent of the mesoporous SiO2 is 60-10%. The mesoporous SiO2 is non-ion-conductive. However, by using the method, the overall ionic conductivity is 100 times higher than the large-granule LiBH4. Therefore, the prepared material has excellent electrochemical properties. Besides, the method is simple in technique and convenient for synthesis. The method has low requirements for equipment, and thus, is easy to implement.

Description

technical field [0001] The invention belongs to the technical field of material preparation, in particular to nano LiBH 4 -SiO 2 Solid electrolyte and preparation method thereof. Background technique [0002] Energy refers to the general term for substances that can generate various energies (such as heat, electric energy, light energy, and mechanical energy, etc.) or work, including coal, crude oil, natural gas, coal bed methane, water energy, nuclear energy, wind energy, solar energy, and geothermal energy. , biomass energy and other primary energy, electricity, heat, refined oil and other secondary energy, as well as other new and renewable energy sources. Energy is the material basis of human activities, so it is also a key issue that is widely concerned by countries all over the world. With the development of the national economy and the deepening of urbanization, the constraints of energy issues on economic development and the improvement of people's quality of life...

AI Technical Summary

Problems solved by technology

At present, fossil energy, as the main form of energy, has many deficiencies: first, the economic benefits of this form of utilization are very low; second, the production of fossil fuels is accompanied by various forms of pollution; Consumption as a form of energy puts a lot of pressure on other applications

Commercial electrolytes are mostly liquid electrolytes, and liquid electrolytes usually use EC (ethylene carbonate), PC (propylene carbonate), DMC (dimethyl carbonate), DEC (diethyl carbonate), EMC (ethyl methyl carbonate) other flammable organic solvents 2 , the safety and service life of the battery are relatively low, and this type of electrochemical device cannot work at high temperature

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