A separator substrate for an electrochemical device. The separator substrate has pores that are small and uniform in size, good physical strength and durability, and high dielectric breakdown voltage. Therefore, with the use of the separator substrate, the...

Some embodiments relate to the technical field of lithium ion battery diaphragms. Provided are an ultrathin lithium ion battery diaphragm with high mechanical strength and excellent thermal dimensional stability, and a preparation method thereof.

The present disclosure relates to a separator for an electrochemical device and an electrochemical device comprising the same, and more specifically, to a separator for an electrochemical device comprising a resin mixture containing ethylene vinyl acetate ...

The present invention regarding the use of anion-exchange membranes for Fe/Cr redox cells belongs to the area of flow redox batteries (or flow redox cells). An anion exchange membrane works as a separator between the positive and negative electrodes in Fe/...

Provided is a very safe secondary battery that can prevent the occurrence of battery abnormalities even when the internal battery temperature increases due to, for example, overcharging. A separator 70 in this secondary battery has a laminated structure th...

Hydrophilized separator material of synthetic fibers and/or filaments is impregnated with 0.01-10 g/m2 alkali hydroxide and/or carbonate before use. Independent claims are also included for the following: (1) production of the hydrophilized separator mater...

Surprisingly it has been found that battery separators based on unwoven fabric can be obtained simply and without complications and having uniform thickness and especially adequate porosity. The separators are not hairy, have outstanding mechanical strengt...