Questions and Answers about Battery Separators
How to choose battery separator?
The selection of battery separators can be based on their intended use. For example:
1. Glass fiber separator: widely used in lithium-ion batteries, lithium air batteries, high rate lithium-ion batteries, and aqueous zinc ion batteries, it is favored due to its high porosity, good liquid absorption, and high temperature stability.
2. Polyolefin materials (such as polypropylene PP and polyethylene PE): used for lithium-ion batteries, with high mechanical strength and solvent resistance.
3. Ceramic diaphragms (such as alumina, zirconia): used for applications that require high temperature and high voltage stability.
4. Composite separator (such as PP/PE/PP three-layer composite separator): Combining the advantages of multiple materials, suitable for high-performance battery applications.
What are the categories of battery separators?
According to material classification, battery separators can be divided into
PE Battery Separator
PP Battery Separator
PP/PE/PP Trilayers Battery Separator
Ceramic Coated Separator (PE Base Film)
Ceramic Coated Separator (PP Base Film)
Cellulose Separator
PVDF Coated Separator
What is the main function of battery separator?
1. Isolate the positive and negative poles: prevent direct contact between the positive and negative poles and avoid short circuits, which is the basis for ensuring the safe operation of the battery.
2. Ion transport channel: allows lithium ions to freely move between the positive and negative electrodes during the charging and discharging process, ensuring smooth electrochemical reactions of the battery.
3. Maintain electrolyte: evenly distribute the electrolyte and limit its loss, thereby ensuring the performance and lifespan of the battery.
How to choose battery separator?
The selection of battery separators can be based on their intended use. For example:
1. Glass fiber separator: widely used in lithium-ion batteries, lithium air batteries, high rate lithium-ion batteries, and aqueous zinc ion batteries, it is favored due to its high porosity, good liquid absorption, and high temperature stability.
2. Polyolefin materials (such as polypropylene PP and polyethylene PE): used for lithium-ion batteries, with high mechanical strength and solvent resistance.
3. Ceramic diaphragms (such as alumina, zirconia): used for applications that require high temperature and high voltage stability.
4. Composite separator (such as PP/PE/PP three-layer composite separator): Combining the advantages of multiple materials, suitable for high-performance battery applications.