Abstract:
Disclosed herein are an electrode structure and an energy storage apparatus including the same, the electrode structure including: a first current collector having a flat plate structure; second current collectors stacked on the first current collector and having a mesh structure; and active material layers formed on the first and second current collectors.
Abstract:
Disclosed herein is a super capacitor electrical storage device, including a cathode and an anode respectively including electrode active materials having different average particle sizes, or a cathode and an anode respectively including electrode active materials having different pore structures in an active material.According to the present invention, a large-capacitance electrochemical capacitor having excellent withstand voltage, energy density, input and output characteristics, and high-rate charging and discharging cycle reliability may be provided, by changing structures of electrodes and design of materials therefor.
Abstract:
Disclosed herein are an electrode including a plurality of electrode active material layers formed above an electrode current collector, each of the electrode active material layers including different structures of binders; a method for manufacturing the same; and an electrochemical capacitor. According to the present invention, physical bonding strength of the electrode can be significantly improved, and thus, long-term reliability of the electrochemical capacitor can be improved, by developing an electrode in which the binder composition of a bonding portion of an electrode and an electrode current collector and the binder composition between the electrode active material layers are differentiated from one another, in order to develop low-resistance EDLC products.
Abstract:
Disclosed herein are an activated carbon for a lithium ion capacitor, including mesopores with a pore size of 2˜50 nm in a content of 20˜30% based on all pores therein, an electrode including the activated carbon as an active material, and a lithium ion capacitor using the electrode. Accordingly, there can be provided an activated carbon having appropriate mesopores for allowing an increase in capacitance by free adsorption and desorption of the lithium ions, and a lithium ion capacitor storage device having a long lifespan and high input and output characteristics and further having reliability on high-rate charging and discharging cycles by including the activated carbon as an active material.
Abstract:
Disclosed herein are an electrode active material composition, a method for preparing the same, and an electrochemical capacitor using the same, the electrode active material composition including: an electrode active material; and a conductive material agglomerate having a size of 1/7 to 1/10 times the average particle size of the electrode active material, the conductive material agglomerate containing two or more kinds of conductive materials agglomerated therein, thereby providing electron moving paths through which electrons can move well and increasing packing density of an electrode active material layer, resulting in increasing capacity.
Abstract:
The present invention relates to an electrolyte of an energy storage device. An electrolyte composition in accordance with an embodiment of the present invention includes an electrolyte salt, a carbonate solvent, and at least one nitrile solvent of acetonitrile and propionitrile.
Abstract:
Disclosed herein are an electrode of an energy storage and a method for manufacturing the same. The electrode includes: a current collector; a first electrode layer provided on one surface or both surfaces of the current collector; and a second electrode layer bonded to an outer surface of the first electrode layer, wherein in each of the first and second electrode layers, content ratios of an active material, a conductive material, and a binder, and materials thereof are different. Therefore, reliability of the energy storage may be increased and resistance thereof may be decreased.
Abstract:
Embodiments of the invention provide a hybrid capacitor that includes a cathode, an anode, a separator and an electrolyte solution. The hybrid capacitor includes a first structure including a cathode containing activated carbon and an anode containing lithium, and a second structure including activated carbon layers formed on both surfaces of a current collector.
Abstract:
Disclosed herein is an apparatus for storing an electric energy, the apparatus including: an electrode stack in which a cathode and an anode in which a cathode lead and an anode lead are respectively formed are alternately stacked; and collector plates disposed at both sides of the electrode stack, connected to the cathode lead and the anode lead, and provided with external terminals and one or more electrolyte flow holes.