BATTERY AND MOBILE ELECTRONIC DEVICE INCLUDING SAME

A battery is provided. A battery according to one embodiment of the present invention comprises: an electrode assembly comprising a cathode having a cathode collector coated, partially or entirely, with a cathode active material, an anode having a nano-web layer on both sides of an anode collector coated, partially or entirely, with an anode active material, and a separation membrane interposed between the cathode and the anode; an electrolytic solution; and an exterior material which encapsulates the electrolyte solution and the electrode assembly together. According to the present invention, since the battery is provided with the porous nano-web layer, even if the temperature inside the battery increases to cause shrinkage or melting of the separation membrane, a contact between the cathode and the anode is prevented such that ignition and/or explosion of the battery does not occur, and ion exchange is not disturbed such that the battery performance does not deteriorate. In addition, the nano-web layer is not molten or released towards the separation membrane even at high temperatures. Moreover, the nano-web layer can prevent generation of cracks even when an external force is applied, and can also prevent or minimize deterioration of the physical properties required for the battery even when a repetitive external force such as repetitive vibrations, etc. is applied. As such, the battery of the present invention may be applied to various electronic devices which require flexibility of the battery, such as rollable displays, etc. as well as wearable devices such as smart watches, watch straps, etc. L'invention concerne une batterie. Une batterie selon un mode de réalisation de la présente invention comprend : un ensemble d'électrodes comprenant une cathode ayant un collecteur de cathode recouvert, partiellement ou entièrement, d'un matériau actif de cathode, une anode ayant une couche de nanotoile de part et d'autre d'un collecteur d'anode recouvert, partiellement ou entièrement, d'un matériau actif d'anode, et une membrane de séparation intercalée entre la cathode et l'anode ; une solution électrolytique ; et un matériau extérieur qui encapsule ensemble la solution électrolytique et l'ensemble d'électrodes. Selon la présente invention, puisque la batterie comporte la couche poreuse de nanotoile, même si la température à l'intérieur de la batterie croît pour entraîner un rétrécissement ou une fusion de la membrane de séparation, un contact entre la cathod