separators

Lithium separator maker Dreamweaver International (Dreamweaver) has launched a line of nanofibre-based separators for supercapacitors.

According to the US company, the separators of the Silver AR line show 27% lower internal resistance. In side-by-side comparisons done by outside laboratories comparing Dreamweaver’s Silver AR line to a competitor, the separators also showed 63% lower Gurley resistance, 21% higher strength and 9% higher capacitance.

Tokyo-based W-Scope Corporation has developed a separator for lithium-ion batteries that can withstand higher temperatures without damage, increasing safety by reducing the risk of battery fires.

The new separator material can withstand temperatures of 200°C for one minute without damage. In comparison, other separators can only withstand temperatures up to around 160°C, according to W-Scope.

The company has begun shipping samples and plans to begin mass production of the new separator in the second half of the year, offering versions in thicknesses ranging from 0.03 mm to less than 0.01 mm.

W-Scope predicts around 10 firms will begin using its new separators during 2013, and that by 2015 these value-added products will account for roughly 30% of its overall separator shipments.