NOVELTY - A battery (100) comprises: an electrode assembly (110) having first electrode, second electrode and separator; an electrolyte; a pouch (130) accommodating the electrode assembly and electrolyte; and a fixing member (120) fixing a winding end of the electrode assembly. The fixing member includes a base layer and an adhesive layer, where the base layer is a material that melts and acquires adhesiveness upon contact with the electrolyte. A portion of the base layer in contact with the electrolyte is in a melted condition and is separated from the adhesive layer.    USE - As battery (claimed) such as pouch type battery.    ADVANTAGE - The base layer of the fixing member adhered to an winding end of the electrode assembly makes contact with an electrolyte, a portion of the base layer is melted to separate the adhesive layer formed on one surface of the base layer from the one surface, thereby suppressing deformation of the electrode assembly.    DETAILED DESCRIPTION - A battery (100) comprises: an electrode assembly (110) having a first electrode, a second electrode and a separator between the first electrode and the second electrode, where the first electrode, second electrode and separator is wound together around a central region of the electrode assembly; an electrolyte; a pouch (130) accommodating the electrode assembly and the electrolyte; and a fixing member (120) that fixes a winding end of the electrode assembly and an external surface of the electrode assembly, where the external surface is closer to the central region than the winding end, where the fixing member includes a base layer and an adhesive layer, where the base layer is between the pouch and the adhesive layer, and the fixing member is contacting the winding end and the external surface of the electrode assembly. A portion of the base layer in contact with the electrolyte is in a melted condition, and the adhesive layer is separated into a first region on the winding end of the electrode assembly and a second region on the external surface of the electrode assembly such that the first and second regions are spaced apart from each other.    DESCRIPTION OF DRAWING(S) - The figure shows an exploded perspective view of a pouch type battery.    Battery (100)    Electrode assembly (110)    First electrode tab (117a)    Second electrode tab (117b)    Fixing member (120)    Pouch (130)