BATTERY SEPARATORS AND METHODS FOR TESTING THE SAME

Disclosed herein are new or improved method for measuring battery separators that are more suitable for modern battery separators and may more accurately predict performance in the battery. Also disclosed are characteristics of an ideal separator that may be measured according to the new or improved methods herein. The ideal separator may comprise one of more of the following properties: low electrical resistance (ER)/σapproaching infinity; σapproaching zero when the separator is dry or wet with electrolyte; low or no volume (higher Wh/l); low or no weight (high Wh/kg); anti-compression (z-performance, wet); super strong (XYZ direction strength for processing when dry and wet); all temperature stability (mechanical, electrical, and electro-chemical when wet and dry); and ability to apply infinite force when measuring ISR.