A kind of polymer electrolyte and its preparation method and battery comprising the polymer electrolyte

Abstract

The present invention relates to the technical field of polymer electrolyte preparation, in particular to a polymer electrolyte and a preparation method thereof and a battery comprising the polymer electrolyte; the polymer electrolyte includes a polymer matrix, an organic solvent, an inorganic filler, a first solution and a second solution. Two solutions; the polymer matrix and the inorganic filler are dispersed in an organic solvent; the inorganic filler is one or more of modified calcium-based montmorillonite, modified nano-calcium carbonate, and nano-nickel oxide; modified calcium The preparation method of base montmorillonite is realized by modifying calcium base montmorillonite and hexadecyltrimethylammonium bromide by ball milling; the invention provides a polymer electrolyte and a preparation method thereof and includes the polymer electrolyte The battery, the polymer electrolyte prepared by the invention has higher thermodynamic stability, ion conductivity, better mechanical strength and electrochemical stability.

Description

technical field [0001] The invention relates to the technical field of polymer electrolyte preparation, in particular to a polymer electrolyte, a preparation method thereof and a battery comprising the polymer electrolyte. Background technique [0002] With the development of the world economy, people's demand for energy is getting bigger and higher, and the requirements are getting higher and higher, and it has increasingly become a global tracking hotspot and a world trend. Lithium-ion batteries are a main direction of new energy development. Lithium-ion batteries are not only widely used in daily life appliances such as mobile phones, notebooks, tablet computers, etc., but also in electric vehicles and hybrid vehicles. The commonly used inorganic materials generally include oxide materials, ferroelectric materials, lithium-containing compounds, molecular sieves, and solid acids. The doping method generally adopts the direct feeding method, that is, the inorganic materials...

AI Technical Summary

Problems solved by technology

However, the room temperature conductivity of the prepared polymer electrolyte is low, and the lithium ion migration number is also low, which cannot meet the ideal requirements. At the same time, the mechanical properties, electrochemical stability and thermal stability of the polymer electrolyte have not met the ideal requirements. For this reason, we need to provide a new idea for a polymer electrolyte, its preparation method and a battery including the polymer electrolyte