| abstract |
The present invention provides a separator for an electrochemical device, an electrochemical device comprising same, and microcapsules, the separator comprising: a porous polymer substrate; and a porous coating layer formed on at least one surface of the porous polymer substrate, and comprising a plurality of microcapsules, and a binder polymer for connecting and fixing the microcapsules to each other by being positioned on one portion or the entirety of the surfaces of the microcapsules, wherein the microcapsules comprise metal hydroxide particles, and capsule films covering the surfaces of the metal hydroxide particles. By such configurational characteristics, the present invention exhibits excellent flame retardancy and may reduce battery performance degradation resulting from the moisture adsorption capability of the metal hydroxide particles. |