Separator is an important part in battery production, its quality directly affects the discharge capacity and service life of charge-discharge cycle of battery, so we must pay attention to the selection and research of battery separator. In general, the quality requirements of the partition should have the following requirements.

In the traditional flooded lead-acid battery, the separator only acts as an inert spacer to prevent the short circuit of the positive and negative electrodes. It needs to have good ionic conductivity, the manufacturing method is matched with the production process, the physical and chemical properties have long-term stability, etc.