Lithium-ion Battery Separator

LiB Separator for OVERVIEW

SUNFINE™ was begun to be used by lithium-ion battery (LiB) industry for  separator applications at an early stage of LiB development and has since been fulfilling the needs of customers.

There are a wide array of high-quality grades of SUNFINE™ ideal for this application. Asahi Kasei has been continuing research and development to create and constantly improve raw materials to meet the demands placed on the latest high-function LiB separators.

Lithium-ion Battery SeparatorEXAMPLE

Lithium-ion Battery SeparatorGRADES

Lithium-ion Battery SeparatorPROPERTY

• High-strength separators

  The grade design adopted for SUNFINE™ features a molecular weight distribution within a narrow range. The content of low molecular weight ingredients causing the deterioration of strength in grades of SUNFINE™ for separator applications is reduced, increasing their puncture-resistance. That leads to higher impact resistance and improved battery safety.

  
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  Very low metal residues

  The trace metal residues in SUNFINE™ derived from catalysts are very low, a feature achieved using advanced catalyst technology. This reduces the problems caused by increased pressure in the extruder when SUNFINE™ is used. It also minimizes the risk of equipment corrosion.

• Quality stability

  SUNFINE™ maintains highly stabile physical properties in every lot through intensive plant management and advanced catalyst technology, enabling customers to achieve higher production stability and reduce costs.