Abstract: Disclosed are an electrode, a secondary battery comprising the same and an energy storage system, the electrode comprising: an electrode current collector; and an electrode layer on the electrode current collector, the electrode layer comprising an active material, a conductive material and a fluorine-containing binder, wherein the electrode layer has a quantified binder ratio (QBR) of 1.1 or less, and the QBR is defined as the following equation: QBR = Bs / Bf . , Bs denotes an average fluorine content in an electrode layer surface region within 15% of a total thickness of the electrode layer from an outermost surface of the electrode layer, and Bf denotes an average fluorine content in an electrode layer bottom region within 15% of the total thickness of the electrode layer from an interface between the electrode layer and the current collector.

Abstract: The present invention provides an electrode for a lithium secondary battery, which includes an electrode current collector, an electrode active material layer formed on the electrode current collector, and an insulating layer formed on the electrode current collector and overlapping the electrode active material layer in a partial region. Here, when the thickness of the electrode active material layer in the region in which the electrode active material layer and insulating layer do not overlap is d1, and the thickness of the insulating layer in the region in which the electrode active material layer and insulating layer do not overlap is d2, d2/d1 is 0.02 to 0.4.

Abstract: Provided is a method for manufacturing a dry electrode film for an electrochemical device. The dry electrode film has a uniform and regular edge, and therefore can be controlled regularly to have a predetermined width. In addition, when using a roll-to-roll continuous manufacturing process, it is possible to control the width of the dry electrode film uniformly during the manufacture. Further, since it is easy to control the width of the dry electrode film, it is possible to minimize a difference in dry electrode film width between one manufacture batch and another manufacture batch, even when the dry electrode film is manufactured through different manufacture batches. Additionally, since the dry electrode film has a uniform and regular edge boundary, it is significantly less likely that the dry electrode film is damaged due to cracking or the like, and the dry electrode film can be handled with ease.

Abstract: The present invention provides an electrode for a lithium secondary battery, the electrode including an electrode current collector, an electrode active material layer formed on the electrode current collector, and an insulating layer formed on the electrode current collector and overlapping the electrode active material layer in a partial region. Here, a thickness of the electrode active material layer in the region in which the electrode active material layer and insulating layer do not overlap is d1, a thickness of the insulating layer in the region in which the electrode active material layer and insulating layer do not overlap is d2, and d2/d1 is 0.02 to 0.4.

Abstract: A secondary battery including an electrode assembly and a pouch configured to accommodate the electrode assembly. The pouch includes two first covers provided on both surfaces of the electrode assembly in a thickness direction and two second covers provided on both surfaces of the electrode assembly in a full-width direction. The edge surfaces of the first covers and the second covers are sealed by a first sealing part, and the end surfaces of the first covers and the second covers are sealed by a second sealing part. The two second covers are in close contact with both the surfaces of the electrode assembly in the full-width direction.

Abstract: A powder for an electrode for manufacturing a dry electrode for a secondary battery, including an active material, a conductive material and a binder, and showing a resistivity of 700 ?·cm or less when being pressurized under a pressure of 50 MPa. The present disclosure also relates to a method for preparing the powder for an electrode, a method for manufacturing a dry electrode using the powder for an electrode, a dry electrode, a secondary battery including the dry electrode, an energy storage apparatus.

Abstract: The present invention provides a composition for forming an insulating layer for a lithium secondary battery, which includes a binder polymer; a coloring agent including at least one selected from the group consisting of an organic dye, an oil-soluble dye and an organic phosphor; and a solvent, and has a viscosity of 1,000 cP or more at 25° C.

Abstract: Disclosed is a method for manufacturing a dry electrode. In the method, a conductive primer layer and an insulating protective layer are formed in a single step, or the insulating protective layer is formed first before an electrode active material layer is formed and after the conductive primer layer is formed. In this manner, there is no gap between the insulating protective layer and the conductive primer layer, thereby providing further improved insulation property. In addition, since the dry electrode is manufactured by laminating the current collector having the conductive primer layer and the insulating protective layer with the dry electrode film, an electrode having excellent adhesion and improved stability can be obtained advantageously.

Abstract: The present technology relates to a dry method of manufacturing a positive electrode for a lithium secondary battery, a positive electrode manufactured thereby, and a lithium secondary battery including the same. Thereby, a positive electrode including a positive electrode mixture layer with an appropriate density, and effective adhesion between the positive electrode mixture layer and the current collector may be realized.

Abstract: The present invention provides a composition for forming an insulating layer for a lithium secondary battery, which includes a binder polymer; a coloring agent including at least one selected from the group consisting of an organic dye, an oil-soluble dye and an organic phosphor; and a solvent, and has a viscosity of 1,000 cP or more at 25 ° C.

Abstract: The present invention provides an electrode for a lithium secondary battery, the electrode including an electrode current collector, an electrode active material layer formed on the electrode current collector, and an insulating layer formed on the electrode current collector and overlapping the electrode active material layer in a partial region. Here, a thickness of the electrode active material layer in the region in which the electrode active material layer and insulating layer do not overlap is d1, a thickness of the insulating layer in the region in which the electrode active material layer and insulating layer do not overlap is d2, and d2/d1 is 0.02 to 0.4.