A method for manufacturing a flexible battery includes the steps of: preparing an electrode current collector having a current collecting portion provided with at least one through-hole; carrying out electrospinning of electrode slurry including an electrode active material, a binder, a conductive material and a solvent on at least one surface of an edge of the current collecting portion and over the through-hole to form an electrode active material layer on at least one surface of the electrode current collector; and forming a battery provided with the electrode current collector having the electrode active material layer formed thereon as an electrode. A flexible battery obtained from the method is also provided.

An electrode and a method of manufacturing an electrode for a lithium secondary battery comprising a perforated current collector. The perforated current collector is capable of allowing active materials to be bonded through perforations of the perforated current collector, and at the same time, improving the energy density of the battery by reducing the weight even if the wet process and the electrically conductive material and binder, which are essential components of the existing electrode mixture, are excluded. The electrode for the lithium secondary battery comprises a first electrode active material layer; a second electrode active material layer; and a perforated current collector interposed between the first electrode active material layer and the second electrode active material layer and is characterized in that the first electrode active material layer and the second electrode active material layer are combined through perforations of the current collector.

A current collector is disclosed and comprises a conductive material and an elemental metal of a group 6 metal contacting the conductive material. Also disclosed are an electrochemical cell comprising a current collector, a cathode adjacent to the current collector, and an alkali metal-based electrolyte between the current collector and the cathode, with the cathode separated from the group 6 metal by the alkali metal-based electrolyte. A method of operating the electrochemical cell is also disclosed.

A current collector is disclosed and comprises a conductive material and an elemental metal of a group 6 metal contacting the conductive material. Also disclosed are an electrochemical cell comprising a current collector, a cathode adjacent to the current collector, and an alkali metal-based electrolyte between the current collector and the cathode, with the cathode separated from the group 6 metal by the alkali metal-based electrolyte. A method of operating the electrochemical cell is also disclosed.

In a method of manufacturing an electrochemical cell, a porous or non-porous metal substrate may be provided. A precursor solution may be applied to a surface of the metal substrate. The precursor solution may comprise a chalcogen donor compound dissolved in a solvent. The precursor solution may be applied to the surface of the metal substrate such that the chalcogen donor compound reacts with the metal substrate and forms a conformal metal chalcogenide layer on the surface of the metal substrate. A conformal lithium metal layer may be formed on the surface of the metal substrate over the metal chalcogenide layer.

A method of preparing an electrode for a secondary battery, including: (i) a process of preparing a current collector in which through-pores or holes are formed and an electrode slurry containing an electrode active material; (ii) a process of bringing a shielding film into close contact with one surface of the current collector to shield pores or holes on the one surface of the current collector; (iii) a process of coating the electrode slurry on the other surface of the current collector to which the shielding film is not attached, and primarily drying to prepare an interim electrode; (iv) a process of removing the shielding film from the interim electrode; and (v) a process of secondarily drying the interim electrode to prepare the electrode.

A method of preparing an electrode for a secondary battery, including: (i) a process of preparing a current collector in which through-pores or holes are formed and an electrode slurry containing an electrode active material; (ii) a process of bringing a shielding film into close contact with one surface of the current collector to shield pores or holes on the one surface of the current collector; (iii) a process of coating the electrode slurry on the other surface of the current collector to which the shielding film is not attached, and primarily drying to prepare an interim electrode; (iv) a process of removing the shielding film from the interim electrode; and (v) a process of secondarily drying the interim electrode to prepare the electrode.

The present invention relates to a three-dimensional structure electrode, a method for manufacturing same, and an electrochemical element including the electrode. The present invention is characterized by comprising: (a) an upper conductive layer and a lower conductive layer which have a structure constituting an assembly within which a conductive material and a porous nonwoven fabric including a plurality of polymeric fibers are three-dimensionally connected in an irregular and continuous manner, thereby forming a mutually connected porous structure; and (b) an active material layer forming the same assembly structure as the conductive layers and forming a three-dimensionally filled structure in which electrode active material particles are uniformly filled inside the mutually connected porous structure formed in the assembly structure, wherein the active material layer is formed between the upper conductive layer and the lower conductive layer.

The present invention relates to a three-dimensional structure electrode, a method for manufacturing same, and an electrochemical element including the electrode. The present invention is characterized by comprising: (a) an upper conductive layer and a lower conductive layer which have a structure constituting an assembly within which a conductive material and a porous nonwoven fabric including a plurality of polymeric fibers are three-dimensionally connected in an irregular and continuous manner, thereby forming a mutually connected porous structure; and (b) an active material layer forming the same assembly structure as the conductive layers and forming a three-dimensionally filled structure in which electrode active material particles are uniformly filled inside the mutually connected porous structure formed in the assembly structure, wherein the active material layer is formed between the upper conductive layer and the lower conductive layer.

A method of making an anode for use in an energy storage device is provided. The method includes providing a current collector having an electrically conductive substrate and a surface layer overlaying a first side of the electrically conductive substrate. A second side of the electrically conductive substrate includes a filament growth catalyst, wherein the second side is opposite the first. The method further includes depositing a lithium storage layer onto the surface layer using a first CVD process forming a plurality of lithium storage filamentary structures on the second side of the electrically conductive substrate using second CVD process.