The liquid electrolytes have the risk of leakage. And they are prone to thermal runaway and are at risk of combustion or even explosion. After the gel polymer electrolyte diaphragm absorbs the electrolyte, it is fully gelated, which improves the thermal stability and mechanical properties of the electrolyte, not only solves the problem of battery leakage, but also balances the needs of energy storage devices in terms of high ionic conductivity and mechanical properties. Gel polymer electrolyte Lithium-ion batteries add additives such as plasticizers to the solid polymer electrolyte to improve ion conductivity and enable the battery to be used at room temperature.
Gel electrolyte: Liquid plasticizers such as PC, EC, etc. are attracted to the polymer matrix to obtain a solid-liquid composite gel electrolyte.
Advantages of Gel Electrolyte: this ternary electrolyte composed of polymer compounds, lithium salts and polar organic solvents has the properties of both solid electrolytes and liquid electrolytes.
Lithium-ion batteries usually use organic solvents as electrolytes, and such organic solvents are very easy to burn. Once the battery produces high temperature or sparks due to an internal short circuit, the electrolyte will be ignited in an instant and cause the entire battery to explode.
The new idea is to turn the flammable liquid electrolyte into a solid electrolyte to reduce the safety risks caused by the flammable liquid, and at the same time obtain better performance. With the development of new energy vehicles, high-energy density and high-safety batteries have become a must-fight target in the market. Some experts believe that the use of solid electrolytes to replace traditional electrolytes is the only way to essentially improve the safety of lithium batteries.