A flexible energy storage device with a redox-active polymer hydrogel electrolyte is provided. The flexible energy storage device can include a pair of electrodes separated by the redox-active polymer hydrogel electrolyte. The redox-active polymer hydrogel electrolyte can include a polymer hydrogel, charge balancing anions and redox-active transition metal cations at least one selected from the group consisting of vanadium, chromium, manganese, cobalt, and copper. The flexible energy storage device may retain greater than 75% of an unbent specific capacitance when bent at an angle of 10° to 170°.

The present disclosure relates to a super absorbent polymer and a preparation method of the same. More specifically, it relates to a super absorbent polymer having a reduced extractable content without deterioration in absorption performance, and to a preparation method of the super absorbent polymer capable of producing the above-described super absorbent polymer by performing a polymerization reaction in the presence of a foaming agent and a carboxylic acid-based additive having a specific structure.

Provided are a superabsorbent polymer and a preparation method thereof, including preparing a base resin and conducting surface modification of the base resin in the presence of an inorganic filler. The method of preparing the superabsorbent polymer of the present invention may provide a superabsorbent polymer having improved rewetting property and liquid permeability.

A superabsorbent polymer having optimized gel strength and exhibiting an improved absorption rate without increasing a specific surface area by chemical foaming or a physical method, and a preparation method thereof, are provided.

Compositions for forming coatings disclosed herein can include a cationic polyelectrolyte, an anionic polyelectrolyte, nanostructures, and a crosslinking agent. The compositions, coatings, methods, and kits described herein can have improved tribological properties, hardness, and strength.

The present disclosure relates to a super absorbent polymer film and a preparation method of the same. Specifically, it relates to a new type of super absorbent polymer film, which is thin and exhibits excellent absorption performance, flexibility and elasticity while having little change in the shape of products. In addition, the super absorbent polymer film of the present disclosure is free from scattering or leaking, and does not require an auxiliary substance such as pulp, so that products can be made thinner and the manufacturing process and costs may be reduced.

The present disclosure relates to a preparation method for a super absorbent polymer film. Specifically, it relates to a preparation method for a new type of super absorbent polymer film, which is thin and exhibits excellent absorption performance while having excellent flexibility and mechanical properties. In addition, the super absorbent polymer film is free from scattering or leaking, and does not require an auxiliary substance such as pulp, so that products can be made thinner and the manufacturing process and costs may be reduced.

A method for producing a crosslinking polymer gel, the method including polymerizing a monomer composition containing at least one (meth)acrylic acid compound selected from the group consisting of (meth)acrylic acid and a salt thereof and benzaldehyde to obtain a crosslinking polymer gel, in which a centrifuge retention capacity of crosslinking polymer particles obtained by coarsely crushing, drying, and pulverizing the crosslinking polymer gel is 60 g/g or more. A monomer composition for obtaining a crosslinking polymer gel, the monomer composition containing at least one (meth)acrylic acid compound selected from the group consisting of (meth)acrylic acid and a salt thereof, and benzaldehyde, in which a centrifuge retention capacity of crosslinking polymer particles obtained by coarsely crushing, drying, and pulverizing the crosslinking polymer gel is 60 g/g or more.

A production method of water-absorbent resin particles is disclosed, the method including: preparing a monomer aqueous solution containing an ethylenically unsaturated monomer and silica; polymerizing the ethylenically unsaturated monomer in the monomer aqueous solution by an aqueous solution polymerization method to obtain a hydrogel-like polymer; and coarsely crushing the hydrogel-like polymer, in which a concentration of the silica in the monomer aqueous solution is 0.02 to 4.0 ppm.

The present invention relates to a method for preparing a superabsorbent polymer, and a superabsorbent polymer prepared thereby. A superabsorbent polymer prepared by the preparation method exhibits minimized deterioration of physical properties after being pulverized, and thus basic absorbance performance is excellent and an excellent liquid permeability and absorbance rate can be exhibited.