A separator for a non-aqueous secondary battery contains: a porous layer that is provided on only one side of the porous substrate, and that contains a resin having at least one bonding group selected from an amide bond, an imide bond, and a sulfonyl bond, in which, in the porous substrate, an absolute value of a difference between a temperature of an endothermic peak observed at 120° C. to 145° C. in a temperature raising process 1, and a temperature of an endothermic peak observed at 120° C. to 145° C. in a temperature raising process 2, is 1.50° C. or higher in DSC measurement when the temperature raising process 1 of continuously raising the temperature from 30° C. to 200° C. at a temperature change rate of 5° C./min in a nitrogen atmosphere, and the temperature raising process 2 of lowering the temperature from 200° C. to 30° C. and raising the temperature from 30° C. to 200° C., are performed.

A separator for a non-aqueous secondary battery contains: a porous layer that is provided on only one side of the porous substrate, and that contains a resin having at least one bonding group selected from an amide bond, an imide bond, and a sulfonyl bond, in which, in the porous substrate, an absolute value of a difference between a temperature of an endothermic peak observed at 120° C. to 145° C. in a temperature raising process 1, and a temperature of an endothermic peak observed at 120° C. to 145° C. in a temperature raising process 2, is 1.50° C. or higher in DSC measurement when the temperature raising process 1 of continuously raising the temperature from 30° C. to 200° C. at a temperature change rate of 5° C./min in a nitrogen atmosphere, and the temperature raising process 2 of lowering the temperature from 200° C. to 30° C. and raising the temperature from 30° C. to 200° C., are performed.

In an ingredient for a secondary cell separator coating material including a core shell particle including a core layer containing a first polymer and a shell layer covering the first polymer and including a second polymer, the first polymer has a repeating unit derived from alkyl (meth)acrylate; the second polymer has a repeating unit derived from (meth)acrylamide of 40 to 97% by mass, and a repeating unit derived from a carboxy group-containing vinyl monomer of 3 to 60% by mass; and a ratio of the second polymer to the first polymer is 4 to 250.

In an ingredient for a secondary cell separator coating material including a core shell particle including a core layer containing a first polymer and a shell layer covering the first polymer and including a second polymer, the first polymer has a repeating unit derived from alkyl (meth)acrylate; the second polymer has a repeating unit derived from (meth)acrylamide of 40 to 97% by mass, and a repeating unit derived from a carboxy group-containing vinyl monomer of 3 to 60% by mass; and a ratio of the second polymer to the first polymer is 4 to 250.

Provided is a separator for a non-aqueous secondary battery containing a porous substrate; and a porous layer that is provided on one side of the porous substrate, and that contains a resin and a filler, in which a shrinkage ratio in a MD direction, when heat-treated at 100° C. for 30 minutes under no tension, is more than 1.2% and less than or equal to 3.5%.

Provided is a separator for a non-aqueous secondary battery containing a porous substrate; and a porous layer that is provided on one side of the porous substrate, and that contains a resin and a filler, in which a shrinkage ratio in a MD direction, when heat-treated at 100° C. for 30 minutes under no tension, is more than 1.2% and less than or equal to 3.5%.

A carbon-metal/alloy composite material includes a composition represented by (1-a)Sn.sub.1-xM.sup.1.sub.x+aM.sup.2+cC, wherein: M.sup.1 includes one or more transition metals, metals, or metalloids; M.sup.2 includes one or more transition metals, metals, or metalloids; x is 0≦x≦1; a is 0≦a≦1; and c is 0<c≦99. A method of forming the carbon-metal/alloy composite material includes the steps of dissolving one or more precursor materials in a solvent to form a solution; adding an organic carbon forming precursor to the solution to form a mixture; heating the mixture in an autoclave reactor for a prescribed period of time; separating solids formed from the mixture after the heating; washing the separated solids with a washing solvent; and heating the washed solids under a non-oxidizing atmosphere to form the carbon-metal/alloy composite material.

Provided is an LDH-like compound separator for secondary zinc batteries that includes a porous substrate made of a polymer material; and an LDH-like compound plugging pores in the porous substrate. The LDH-like compound separator has a dendrite buffer layer therein, the dendrite buffer layer being at least one selected from the group consisting of: (i) a pore-rich internal porous layer in the porous substrate, the internal porous layer being free from the LDH-like compound or deficient in the LDH-like compound; (ii) a releasable interfacial layer, which is provided by two adjacent layers constituting part of the LDH-like compound separator being in releasable contact with each other; and (iii) an internal gap layer being free from the LDH-like compound and the porous substrate, which is provided by two adjacent layers constituting part of the LDH-like compound separator being formed apart from each other.

A separator for a battery interposed between a cathode and an anode, and a method of manufacturing the same are provided, the separator for a lithium ion secondary battery including a porous polymer sheet having a first surface and a second surface opposing the first surface, and in which a pore communicating the first surface and the second surface is formed, and a heat resistant inorganic material layer coating at least the first surface and a surface of the pore, and formed in an atomic layer deposition method, wherein the heat resistant inorganic material layer formed on the first surface or the second surface has a thickness of 20 nm to 100 nm, porosity of the separator after the heat resistant inorganic material layer is formed is 30% to 70%, and a gurley value is 100 s/100 ml to 1000 s/100 ml.

As a nonaqueous electrolyte secondary battery porous layer that is excellent in durability with respect to charge-discharge cycles, provided is a nonaqueous electrolyte secondary battery porous layer including a resin which has an amide bond and which contains a component that is to be eluted into N-methylpyrrolidone. A contained amount of the component that is to be eluted into N-methylpyrrolidone is not less than 6.0% by weight and not more than 25.0% by weight relative to a total weight of the resin having the amide bond.