Abstract: The present invention relates to an electrochemical element and a method for producing same, the electrochemical element comprising: electrodes comprising a composite of active material and conductive material having a nanofiber structure; and a cellulose nanofiber separator combined with the electrodes. The electrochemical element according to the present invention obviates the need for separate binder and electrode current collector, has a stable interfacial surface due to the physical union of the separator and electrode, can assure superb mechanical and physical properties, and can maintain stable battery performance even against deformations due to a variety of external impact.

Abstract: The present invention relates to a film comprising graphene oxide (GO) and clay, an electronic device comprising the film, a packaging material coated with the film, and a preparation method thereof.

Abstract: The present invention relates to a method for manufacturing activated carbon using a coffee bean extract, and an electrode for a battery comprising same. The method for manufacturing activated carbon, according to the present invention, is safe for the human body by using an extract obtained from food, such as coffee beans, as an activation catalyst when carbidizing cellulose, and allows easy maintenance and repair of processing equipment, thereby providing the advantages of excellent productivity, economic feasibility, and also of being environmentally friendly due to utilization of discarded food waste. In addition, activated carbon manufactured by the method has a large specific surface area and has fine pores having a diameter of no more than 2 nm, thereby being useful when applied to electrode materials for a super capacitor, among others.

Abstract: The present invention relates to a complex comprising a covalent organic framework (COF) synthesized on the surface of a carbon structure, a preparation method therefor, and use thereof, and specifically to a complex of a carbon structure and a covalent organic framework, wherein the specific surface area or pore volume of the covalent organic framework synthesized on the surface of the carbon surface is larger than the specific surface area or the pore volume of the covalent organic framework prepared without the carbon structure; a preparation method therefor; and use thereof.

Abstract: The present invention relates to a complex comprising a covalent organic framework (COF) synthesized on the surface of a carbon structure, a preparation method therefor, and use thereof, and specifically to a complex of a carbon structure and a covalent organic framework, wherein the specific surface area or pore volume of the covalent organic framework synthesized on the surface of the carbon surface is larger than the specific surface area or the pore volume of the covalent organic framework prepared without the carbon structure; a preparation method therefor; and use thereof.

Abstract: The present invention relates to a film comprising graphene oxide (GO) and clay, an electronic device comprising the film, a packaging material coated with the film, and a preparation method thereof.