Electrode assembly, secondary battery including the same, and method of manufacturing the same

An electrode assembly includes a positive plate, a negative plate, and a separator located between the positive plate and the negative plate, each of the positive plate and the negative plate having an active part formed by applying an active material to at least one surface and a non-applied part from which the active material is omitted, wherein a side part extending from at least one of the active part of the positive plate and the active part of the negative plate is coated with an inorganic coating layer.