Porous zeolite-like materials with a framework structure have strong application potential in the field of flame retardant battery separators, and are important materials for preparing battery separators with excellent flame retardant and electrical properties at the same time.
The battery consists of electrolyte, separator, electrode and shell, the traditional flame retardant method of battery is to modify the components to improve its flame safety.
Flame retardants could improve the safety properties of lithium batteries (LBs) with the sacrifice of electrochemical performance due to parasitic reactions. To concur with this, we designed thermal-response clothes for hexachlorophosphazene (HCP) additives by the microcapsule technique with urea-formaldehyde (UF) resin as the shell.
In this study, a novel strategy of coating flame retardancy was adopted to prepare a highly flexible flame-retardant CPCM (FR-CPCM) by combining flexible flame-retardant coating (FRC) with flexible CPCM. Its thermophysical properties, flexibility, and flame retardancy were characterized and used for the thermal management of batteries.
Flame retardant modification of electrolyte for improving battery safety is discussed. The development of flame retardant battery separators for battery performance and safety are investigated. New battery flame retardant technologies and their flame retardant mechanisms are introduced.
The first is the compatibility of flame retardant components with battery components. The addition of flame retardant components may have a negative impact on battery performance, reducing battery life and battery capacity. The second is the impact on the environment.
This solid electrolyte has excellent flame retardant properties, and the flame tests show that the flame retardant electrolyte can be self-extinguishing within 3 s (Fig. 7). In addition, the electrolyte also has good performance in battery stability and lithium dendrite suppression.
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