Porous membranes, freestanding composites, and related devices and methods

    公开(公告)号:US11380961B2

    公开(公告)日:2022-07-05

    申请号:US16622241

    申请日:2018-06-15

    Inventor: Daniel Wandera

    Abstract: The disclosed porous membranes and freestanding composites containing the porous membranes have a solution-cast three-dimensional polymer matrix defining interconnecting pores that provide overall first major surface-to-second major surface fluid permeability. The porous membranes and freestanding composites can be used to separate lead-acid battery electrodes. The porous membranes and freestanding composites can have high porosity and low electrical resistance while having both excellent flexibility and mechanical strength. This can reduce the probability of damage to the separators during battery assembly and also allow production of battery separators with a high overall height, but a minimal backweb thickness.

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