A processing method of a base material sheet includes winding out the base material sheet wound up by a first core and a first porous sheet wound up by a second core, winding up by a third core the base material sheet and the first porous sheet to be overlapped with each other, and processing the base material sheet by a first processing liquid held in the first porous sheet; and winding out the base material sheet and the first porous sheet overlappingly wound up by the third core, winding up the first porous sheet by the second core, and winding up the base material sheet by the first core.

A polymer electrolyte membrane, an electrode structure and an electrochemical device including the same, and a method of manufacturing the polymer electrode membrane are disclosed. The polymer electrolyte membrane includes a copolymer of a cross-linkable precursor comprising a urethane group-containing polyfunctional acrylic monomer and a polyfunctional block copolymer; and a lithium salt, thereby having high elasticity and high strength characteristics, so that dendrites can be stably protected and damage to a protective film can be prevented when the dendrites are grown on the surface of a lithium metal electrode during the charging and discharging of a battery, and thus the performance of the battery can be improved. The polymer electrolyte membrane can be directly coated on a free-standing type film or a lithium metal electrode and then molded into a form of protective film, and can thus be used in an electrochemical device such as a high-density and high-energy lithium metal battery.

The present invention relates to a porous film including polyethylene and pore-forming particles, wherein the porous film has a structure including lamella and fibril, and the average size of pores located inside the porous film is larger than the average size of pores located on the surface of the porous film; a separator including the same; and an electrochemical cell.

A metal-oxygen battery can provide improved energy storage and transportation applications due to high gravimetric energies, and such a metal-oxygen battery can include a polyolefin including a plurality of functional groups such as sulfamide, sulfoxy, carbonyl, phosphoramide or heterocyclic groups.

Anion exchange polymers having high OH.sup.− conductivity, chemical stability, and mechanical stability have been developed for use in AEMs. The anion exchange polymers have stable hydrophobic polymer backbones, stable hydrophilic quaternary ammonium cationic groups, and hydrophilic phenolic hydroxyl groups on the polymer side chains. The polymers have polymer backbones free of ether bonds, hydrophilic polymer side chains, and piperidinium ion-conducting functionality, which enables efficient and stable operation in water or CO.sub.2 electrolysis, redox flow battery, and fuel cell applications. The polymer comprises a plurality of repeating units of formula (I)

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Anion exchange membranes and membrane electrode assemblies incorporating the anion exchange polymers are also described.

A composite membrane includes an ion-conductive polymer layer; and a plurality of gas blocking inorganic particles non-continuously aligned on the ion-conductive polymer layer, wherein the composite membrane has a radius of curvature of about 10 millimeters or less.

Crosslinked membranes for anion exchange applications, and methods of making and using the same, are described.

A bipolar membrane in which a cation-exchange membrane and an anion-exchange membrane are joined to each other, wherein a leakage ratio of gluconic acid at 60° C. is not more than 1.0%, and the cation-exchange membrane is supported by a polyolefin reinforcing member and, further, contains a polyvinyl chloride.

An anion-exchange membrane of the present invention includes a substrate made of polyolefin-based woven fabric and an anion-exchange resin, and has an electrical resistance measured using 0.5 M NaCl solution at 25° C. of 1.0 Ω•cm.sup.2 or more to 2.5 Ω•cm.sup.2 or less, a bursting strength of 0.7 MPa or more to 1.2 MPa or less, a water permeation rate measured using pressured water at 0.1 MPa of 300 ml/(m.sup.2•hr) or less, a thickness of the substrate of 90 .Math.m or more to 160 .Math.m or less, and an open area ratio of the substrate of 35% or more to 55% or less.

Provided are a solid electrolyte composition containing an inorganic solid electrolyte having a conductivity of an ion of a metal belonging to Group I or II of the periodic table and a binder having a specific hydrocarbon polymer segment and a specific segment, a solid electrolyte-containing sheet in which the same solid electrolyte composition is used and a manufacturing method therefor, an all-solid state secondary battery and a manufacturing method therefor, a polymer having a specific hydrocarbon polymer segment and a specific segment, and a non-aqueous solvent dispersion thereof.