Abstract: In one embodiment, a multilayer article can comprise: a multilayer substrate M, comprising: greater than or equal to 16 polymer A layers, preferably 16 to 512 polymer A layers; and greater than or equal to 16 polymer B layers, preferably 16 to 512 polymer B layers; wherein the polymer A layers and the polymer B layers are present in a ratio of 1:4 to 4:1, preferably the ratio is 1:1; a protective layer P; and an identification layer I between the protective layer P and the multilayer substrate M; wherein the identification layer I comprises information, and wherein the protective layer P prevents alteration thereof.

Abstract: A separator (104) includes a porous polyetherimide membrane comprising a plurality of pores, wherein at least a portion of the pores comprise an electrolyte composition comprising an ionic liquid.

Abstract: In one embodiment, a multilayer article can comprise: a multilayer substrate M, comprising: greater than or equal to 16 polymer A layers, preferably 16 to 512 polymer A layers; and greater than or equal to 16 polymer B layers, preferably 16 to 512 polymer B layers; wherein the polymer A layers and the polymer B layers are present in a ratio of 1:4 to 4:1, preferably the ratio is 1:1; a protective layer P; and an identification layer I between the protective layer P and the multilayer substrate M; wherein the identification layer I comprises information, and wherein the protective layer P prevents alteration thereof.

Abstract: A separator (104) includes a porous polyetherimide membrane comprising a plurality of pores, wherein at least a portion of the pores comprise an electrolyte composition comprising an ionic liquid.

Abstract: A method for preparing a high temperature melt integrity separator, the method comprising spinning a polymer by one or more of a mechanical spinning process and an electro-spinning process to produce fine fibers.

Abstract: A method for preparing a high temperature melt integrity separator, the method comprising spinning a polymer by one or more of a mechanical spinning process and an electro-spinning process to produce fine fibers.

Abstract: In an embodiment, a method of making fibers comprises: flowing a dispersion medium through a reaction tube, wherein the dispersion medium comprises an anti-solvent; adjusting a temperature of a polymer solution to form a stable polymer solution, wherein the polymer solution comprises a polymer and a solvent; introducing the stable polymer solution into the dispersion medium to form a polymer dispersion comprising the dispersion medium and a plurality of polymer components of the polymer solution; and shearing the dispersed-phase components by flowing the dispersion system through the reaction tube, wherein a plurality of fibers having an average diameter of less than or equal to 10 ?m are formed.

Abstract: A method for preparing a high temperature melt integrity separator, the method comprising spinning a polymer by one or more of a mechanical spinning process and an electro-spinning process to produce fine fibers.

Abstract: A method for preparing a high temperature melt integrity separator, the method comprising spinning a polymer by one or more of a mechanical spinning process and an electro-spinning process to produce fine fibers.

Abstract: The disclosure relates, in one aspect, to porous solid-state films with controlled pore structures obtained by laser perforation. A thin laser-perforated film can comprise a slab defining a plurality of pores distributed in a predetermined arrangement, the plurality of pores having a distribution of sizes bound by a predetermined magnitude. In an aspect, the plurality of pores are formed in the slab with a laser having a wavelength less than about 400 nm and the slab has a transmission of the laser light of equal to or less than about 70% measured at a thickness of the slab of 100 micrometer or less.

Abstract: The disclosure relates, in one aspect, to porous solid-state films with controlled pore structures obtained by laser perforation. A thin laser-perforated film can comprise a slab defining a plurality of pores distributed in a predetermined arrangement, the plurality of pores having a distribution of sizes bound by a predetermined magnitude. In an aspect, the plurality of pores are formed in the slab with a laser having a wavelength less than about 400 nm and the slab has a transmission of the laser light of equal to or less than about 70% measured at a thickness of the slab of 100 micrometer or less.

Abstract: A method for preparing a high temperature melt integrity separator, the method comprising spinning a polymer by one or more of a mechanical spinning process and an electro-spinning process to produce fine fibers.

Abstract: A heat-resistant material based on an amorphous thermoplastic polymer that is resistant to, but highly compatible with electrolyte solutions is disclosed. In an aspect, the heat-resistant material is used to form a separator for a battery cell and/or an electrolytic capacitor cell.