Korea Institute of Energy Research

Other

Sun-hwa Yeon

Bum-suk Lee

Kyoung-Hee Shin

Jae-Deok Jeon

Kyu-Nam Jung

Chang-Soo Jin

Jung-Hoon Yang

Sukeun Yoon

Joonmok Shim

Myung Seok Jeon

Myung-seok Jeon

Se-Kook Park

Sun-Dong Kim

Jung Joon Yoo

Hana Yoon

Jong-Won Lee

Chang Soo Jin

Hyunuk Kim

Nam-Sun Nho

Wook Ahn

Chang-soo Jin

Sung-Chan Nam

Kwang-Ho Kim

Kyung-Hee Shin

Myung-Hyun Ryu

Cheon Beom Park

Dae Wi Kim

Kyoung-hee Shiin

Joon-mok Shim

Sea-Couk Park

Jaeyoung So

Dae-Hyun Shin

Je-Kyoung Woo

Jae-Deok Joen

Kyung-hee Shin

Jun-Mook Shim

This invention relates to an electrolyte solution for a redox flow battery containing an organic active material, in which an organic compound useful as a single active material for a cathode and an anode is dissolved in a water-soluble solvent, and to a redox flow battery using the same. The electrolyte solution of the invention is an aqueous electrolyte solution obtained by dissolving an active material in an aqueous solvent, and is thus very stable due to the low risk of fire or explosion. Furthermore, the organic compound is applied as a single active material to the cathode and the anode, and thus, when the capacity of the battery is decreased due to the permeation of the active material through the separator, the battery capacity can be restored through rebalancing.

Electrolyte solution for redox flow battery containing organic active material and redox flow battery using the same

The present invention relates to a cathode for a metal-air battery, a method for manufacturing the same, and a metal-air battery including the same. The cathode comprises a needle-shaped core including two or more species of metals selected from the group consisting of nickel, cobalt, manganese, zinc, iron, copper, and chrome, or a cobalt oxide; and a flake-shaped shell including an oxide containing two or more species of metals selected from the group consisting of nickel, cobalt, manganese, zinc, iron, copper, and chrome or a cobalt oxide. As such, the core-shell structure may lead to a reduction in the charge voltage of the metal-air battery as well as the taking of the good capacity characteristics of the transition metal oxide. Further, according to the present invention, the cathode for a metal-air battery may be produced without adding carbon or binder.

Cathode for metal-air battery, method of manufacturing the same, and metal-air battery comprising the same

Disclosed herein is stack-type flow energy storage system. More particularly, the system includes a stack-type electrode cell composed of fluidic electrode material mixed with an electrolyte and storage tank for the electrode material, thereby remarkably improving stability, output and energy density. The stack-type flow energy storage system is advantageous in that unit cells, each consisting of a cathode, a separation membrane and an anode, are connected in parallel or in series to each other to make a stack cell, thus remarkably increasing output power. Further, the stack-type flow energy storage system is advantageous in that the sizes of slurry storage tanks connected to an electrode cell are adjusted, thus determining the required specification of energy density.

Stack-type flow energy storage system and method of charging and discharging energy using the same

Disclosed is a method of preparing a carbide-derived carbon having high ion mobility for use in a lithium battery anode material, a lithium air battery electrode, a supercapacitor electrode, and a flow capacitor electrode, including thermally treating a carbide compound in a vacuum, thus obtaining a vacuum-treated carbide compound; and thermochemically reacting the vacuum-treated carbide compound with a halogen element-containing gas, thus extracting the element other than carbon from the vacuum-treated carbide compound, wherein annealing can be further performed after thermochemical reaction. This carbide-derived carbon has a small pore distribution, dense graphite fringe, and a large lattice spacing and thus high ion mobility, compared to conventional carbide-derived carbon obtained only by thermochemical reaction with a halogen element-containing gas.

Carbide-derived carbon manufactured by using heat treatment at vacuum and method thereof

A manifold for a redox flow battery capable of effectively suppressing a shunt current has a supply flow pathway and an exhaust flow pathway respectively formed at a left side and a right side of an anode or cathode electrode electrolyte reaction unit so as to include a U-shaped curved portion, and the U-shaped curved portion is formed to be positioned on the upper part of the top or the lower part of the bottom of the first electrode electrolyte reaction unit. When the manifold is applied to a redox flow battery, the supply flow pathway and the exhaust flow pathway having the U-shaped curved portion are formed on the upper part of the top or the lower part of the bottom of the electrode electrolyte reaction unit to prevent an electrolyte existing in the inside of a stack and a pipe from passing through the U-shaped curved portion.

Manifold for redox flow battery for reducing shunt current and redox flow battery comprising same

Disclosed is a method for preparing a metal catalyst having improved yield of alcohols. The method for preparing a metal catalyst for the production of alcohol from synthesis gas includes forming a metal catalyst; and irradiating the metal catalyst with gamma rays. The metal catalyst has improved yield of alcohols by stabilizing the metal catalyst through gamma ray irradiation to inhibit generation of hydrocarbons in catalytic reaction with synthesis gas.

Method for producing metal catalyst for preparing alcohol and metal catalyst produced thereby

Disclosed is a method for preparing a carbide-derived carbon-based anode active material. The method includes preparing carbide-derived carbon, and expanding pores of the carbide-derived carbon. Here, expanding of pores is performed as an activation process of heating the prepared carbide-derived carbon in the air. The pores formed inside the carbide-derived carbon can be expanded during the activation process in the preparation of the carbide-derived carbon-based anode active material. In addition, by applying the carbide-derived carbon to an anode active material, lithium secondary battery having improved charge-discharge efficiency can be prepared.

Method for preparing carbide-derived carbon-based anode active material and anode active material prepared by the same

Disclosed is to a method of manufacturing an anode active material, including mixing a first solution having a metal oxide precursor dissolved therein, a second solution having a polymer as a carbon fiber precursor dissolved therein, and an ionic liquid solution for nitrogen doping and formation of a porous structure, thus preparing an electrospinning solution, electrospinning the electrospinning solution, thus preparing a metal oxide-nitrogen-porous carbon nanofiber composite, and thermally treating the composite, and to an anode and a lithium battery using the anode active material.

Method of manufacturing anode active material, and anode and lithium battery using the anode active material

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Daejeon, South Korea

Sun-hwa Yeon