Abstract: The present disclosure relates to the technical field of aluminum-plastic film production and discloses a metal composite film comprising an outer substrate resin layer, an intermediate metal layer and a heat-fusible resin layer; an anti-corrosion layer is formed on a side of the intermediate metal layer, the side being in contact with the heat-fusible resin layer; the anti-corrosion layer is formed of an anti-corrosion solution by coating or heat treatment; the components of the anti-corrosion solution include a trivalent chromium compound, an inorganic acid and an organic resin; the trivalent chromium compound, the inorganic acid and the organic resin are in a mass ratio of (19-60):(3-60):(6-60). The components of the anti-corrosion solution may further comprise a titanate; the trivalent chromium compound, the inorganic acid, the organic resin and the titanate are in a ratio of (19-60):(3-60):(6-60):(1-10).

Abstract: The present disclosure relates to the technical field of aluminum-plastic film production and discloses a metal composite film comprising an outer substrate resin layer, an intermediate metal layer and a heat-fusible resin layer; an anti-corrosion layer is formed on a side of the intermediate metal layer, the side being in contact with the heat-fusible resin layer; the anti-corrosion layer is formed of an anti-corrosion solution by coating or heat treatment; the components of the anti-corrosion solution include a trivalent chromium compound, an inorganic acid and an organic resin; the components of the anti-corrosion solution may further include a titanate; the components of the anti-corrosion solution may further include a fluoride. The use of the formula for the anti-corrosion solution within the range defined above in the present disclosure can significantly improve the initial peel strength of the intermediate metal layer and the heat-fusible resin layer of the metal composite film.

Abstract: The present disclosure relates to the field of battery separators, and in particular discloses a polyolefin microporous membrane with a thickness of 2 to 30 ?m, a puncture strength of 1000 to 2000 gf, a tensile strength of 3200 to 5000 kgf/cm2 along an MD direction, a tensile strength of 2800 to 4800 kgf/cm2 along a TD direction, a porosity of 40% to 57%, a maximum pore size of 33 to 48 nm, an air permeability of 10 to 400 s/100 ml, and an impedance of 0.3 to 0.952/cm2, and a manufacturing system thereof, and a coated separator and an electrochemical apparatus using the basal membrane. In the present disclosure, the polyolefin microporous membrane has excellent performance and its thickness, tensile strength, puncture strength, air permeability, porosity and thermal shrinkage rate all can satisfy the applications having high requirements for the thickness and mechanical strength of the microporous membranes.

Abstract: Disclosed in the present invention is an isolating membrane of an electrochemical device, comprising a modified porous base membrane and a functional layer arranged on the surface of at least one side of the modified porous base membrane. The functional layer contains slurry of organic matter and inorganic matter compounds, and the modified porous base membrane contains particles of a lithium-containing conductive ion compound. According to the present invention, the lithium-containing conductive ion compound is prepared by adopting a sol-gel-hydrothermal method, and small-particle-size particles of the lithium-containing conductive ion compound are embedded into the isolating membrane base membrane, so that the defects of poor ionic conductivity and poor wettability of an existing isolating membrane are overcome, and moreover, the isolating membrane has good adhesion and heat resistance due to the coated functional layer.

Abstract: An outer packaging material for a battery apparatus, the material comprising a base layer (1), a bonding layer (2), a barrier layer (5), another bonding layer (7), and a hot-melt adhesive layer (8); the bonding layer (2) is disposed between the base layer (1) and the barrier layer (5); the other bonding layer (7) is disposed between the barrier layer (5) and the hot-melt adhesive layer (8); the barrier layer (5) is composed of a single layer or multiple layers of aluminum alloy foil; the aluminum alloy foil composition and the mass percentage thereof comprises over 1.2% Fe content and over 1% Mg content; after undergoing annealing treatment, a large amount of Mg will precipitate out from within the aluminum foil, and the ratio of the precipitated Mg amount to a precipitated Al amount is between 2-4.