Abstract: A positive electrode according to one embodiment of the present technology is a positive electrode including a positive electrode active material layer disposed on at least one surface of a positive electrode current collector, the positive electrode active material layer includes a lithium transition metal phosphate and a fluorine-based binder, and, in a flexibility evaluation, in which the positive electrode is lifted after bringing measuring rods for each phi (?) into contact with the positive electrode active material layer, a ratio value (=P/D) of a porosity (P) of the positive electrode active material layer calculated by the disclosed Equation 1 to a maximum phi value (D) of the measuring rod at which a crack occurs is greater than or equal to 10.

Abstract: A positive electrode including a positive electrode active material layer disposed on at least one surface of a positive electrode current collector, the positive electrode active material layer including a lithium transition metal phosphate, a fluorine-based binder, and a conductive material. The lithium transition metal phosphate includes a carbon coating layer formed on a surface thereof, and a ratio (B/A) of a total weight (B) of the fluorine-based binder to a total weight (A) of carbon of the conductive material and the lithium transition metal phosphate in the positive electrode active material layer is 0.7 to 1.7.

Abstract: Provided are a multi-functional hybrid fiber, a composite material with the same, and a method of manufacturing the same. The multi-functional hybrid fiber includes a carbon fiber having a bundle of a plurality of continuous fibers, the continuous fiber having an external diameter of 5 ?m to 10 ?m, a nano particle attached to an outer surface of the carbon fiber by an electrophoretic deposition method, and a metal attached to the outer surface of the carbon fiber by an electroplating method. The nano particle and metal are mixed and attached to the outer surface of the carbon fiber by the simultaneous electrophoretic deposition and electroplating methods.

Abstract: Provided are a multi-functional hybrid fiber, a composite material with the same, and a method of manufacturing the same. The multi-functional hybrid fiber includes a carbon fiber having a bundle of a plurality of continuous fibers, the continuous fiber having an external diameter of 5 ?m to 10 ?m, a nano particle attached to an outer surface of the carbon fiber by an electrophoretic deposition method, and a metal attached to the outer surface of the carbon fiber by an electroplating method. The nano particle and metal are mixed and attached to the outer surface of the carbon fiber by the simultaneous electrophoretic deposition and electroplating methods.