Abstract: The present invention relates to a bio-char producing system comprising: a preheating-warming tank for preheating a water-containing organic raw material including food waste; a carbonization reactor for carbonizing, by a hydrothermal carbonization method, the water-containing organic raw material heated at the preheating-warming tank; and an indirect heater provided inside and outside the carbonization reactor to indirectly heat the carbonization reactor through a heating pipe where a heated insulating oil flows inside.

Abstract: The present invention relates to a bio-char producing system comprising: a preheating-warming tank for preheating a water-containing organic raw material including food waste; a carbonization reactor for carbonizing, by a hydrothermal carbonization method, the water-containing organic raw material heated at the preheating-warming tank; and an indirect heater provided inside and outside the carbonization reactor to indirectly heat the carbonization reactor through a heating pipe where a heated insulating oil flows inside.

Abstract: The present application provides a C1-xNx nanotube with pores having nano-sized diameter ranging from 5 to 10 ?, where x ranges from 0.001 to 0.2, and a method for controlling the size and quantity of pores in said nanotube by reacting hydrocarbon gas, nitrogen gas, and oxygen gas or hydrogen gas together in the presence of metal catalyst and by controlling the concentration of nitrogen gas.

Abstract: Disclosed are carbon nitride (C1-xNx) nanotubes with nano-sized pores on their stems, their preparation method and control method of size and quantity of pores thereof. The present invention further has an object of providing the C1-xNx nanotube with pores having the size of not more than 1 nm over structure of the nanotube and a method for preparing the same. Another object of the present invention is to provide the control method of the size and quantity of pores with size of not more than 1 nm in the preparation of the C1-xNx nanotube with the pores over structure of the nanotube. The present invention can produce the C1-xNx nanotube with nano-sized pores by reacting hydrocarbon gas and nitrogen gas through plasma CVD in the presence of metal catalyst particles, wherein x ranges from 0.001 to 0.2.

Abstract: Disclosed herein is a method of doping nanosized nickel (Ni) on the surface of carbon nanotubes to improve the hydrogen storage capacity of the carbon nanotubes. The method comprises: sonicating carbon nanotube samples produced by vapor deposition, in sulfuric acid solution, followed by filtration to remove a metal catalyst from the carbon nanotube samples; and doping the carbon nanotube samples in liquid phase solution, followed by drying and reduction, so as to dope nanosized nickel on the surface of the carbon nanotubes.

Abstract: Disclosed are carbon nitride (C1-xNx) nanotubes with nano-sized pores on their stems, their preparation method and control method of size and quantity of pores thereof. The present invention further has an object of providing the C1-xNx nanotube with pores having the size of not more than 1 nm over structure of the nanotube and a method for preparing the same. Another object of the present invention is to provide the control method of the size and quantity of pores with size of not more than 1 nm in the preparation of the C1-xNx nanotube with the pores over structure of the nanotube. The present invention can produce the C1-xNx nanotube with nano-sized pores by reacting hydrocarbon gas and nitrogen gas through plasma CVD in the presence of metal catalyst particles, wherein x ranges from 0.001 to 0.2.

Abstract: Disclosed are carbon nitride (C1-xNx) nanotubes with nano-sized pores on their stems, their preparation method and control method of size and quantity of pores thereof. The present invention further has an object of providing the C1-xNx nanotube with pores having the size of not more than 1 nm over structure of the nanotube and a method for preparing the same. Another object of the present invention is to provide the control method of the size and quantity of pores with size of not more than 1 nm in the preparation of the C1-xNx nanotube with the pores over structure of the nanotube. The present invention can produce the C1-xNx nanotube with nano-sized pores by reacting hydrocarbon gas and nitrogen gas through plasma CVD in the presence of metal catalyst particles, wherein x ranges from 0.001 to 0.2.

Abstract: The present invention relates to a thread-type flexible battery, more precisely a thread-type flexible battery that can be transformed into various forms in necessary and easily connected to an instrument from outside thereof by having a shape of a thread, which is constructed by forming an inside electrode by coating electrode material at periphery side of inside current collector, and coating electrolyte at the outside of said inside electrode, and forming an outside electrode by coating electrode material at periphery side of said electrolyte, and then depositing an outside electrolyte and a protecting coating part enabling to protect the periphery side of said outside electrolyte from a moisture and an air.

Abstract: The present invention relates to a sodium-sulfur battery consisted of solid sodium for the negative electrode (comprising carbon, sodium metal oxide and the like comprising sodium compound, sodium ion); solid sulfur for the positive electrode (comprising sulfur, sulfur compound such as iron sulfide, nickel sulfide); and liquid electrolyte which sodium salt and organic solvent such as grymids or carbonates are soaked in cell guard, thereby improving a drawback of prior art for conventional battery.

Abstract: A method for surface treatment of lithium manganese oxide for positive electrodes in lithium secondary batteries is provided in which the surface of the lithium manganese oxide is coated with lithium transition metal oxides. The lithium secondary batteries using the coated lithium manganese oxide as an anode material not only solves the problems with the conventional lithium secondary batteries in regard to the lifetime of the electrodes at high temperature and the fast discharge efficiency, but also replace the conventional expensive lithium cobalt oxide to reduce the production cost.

Abstract: A sulfuric positive electrode for use in a lithium secondary battery whose life cycle is enhanced and a method for manufacturing the same are provided, in which nickel is added in sulfur that is an active material of a positive electrode. The sulfuric positive electrode manufactured by adding nickel that is an electrical conductor can solve the problem with respect to an electrode life cycle.

Abstract: A hydrogen storage alloy, represented by the following formula I which is suitable for use as an active anode material for ni-metal hydride secondary cells by virtue of its high discharge characteristics including, for example, a discharge capacity ranging from approximately 300 to 400 mAh/g and a rate capability of at least 80%; Zr1−xtix(MnuVvNiy)z  I wherein, x, u, v, and z each represent an atom fraction under the condition of: 0<x≦0.2, 1.5≦u≦0.7, 0.5≦v≦0.7, 1.0≦y≦1.4, and 0.84≦z≦1.0.1.

Abstract: The present invention relates to a method for a surface treatment of a layered structure oxide for a positive electrode in a lithium secondary battery. The method includes coating the surface of the layered structure oxide with a lithium transition metal oxide. The lithium secondary battery where the layered structure oxide is used as an active material of the positive electrode solves the problem of the thermal stability suffered conventionally.

Abstract: A method for crystallizing a lithium transition metal oxide thin film for an electrode of a thin film-type lithium secondary battery is provided, in which the lithium transition metal oxide thin film is reacted with oxygen or argon plasma induced by a microwave or a radio frequency wave, thereby obtaining an excellent lithium transition metal oxide thin film in a degree of crystallization and electrochemical characteristics.

Abstract: Disclosed is a method for preparing a high performance, negative electrode for Ni/metal hydride cells. A Zr-based hydrogen storage alloy, a binder comprising a mixture of polytetrafluoroethylene and 50th and a thickening agent (hydroxypropylmethyl cellulose), and a current collector comprising carbon black and copper are slurried and molded into a paste-type electrode. In a closed type cell, the copper repetitively undergoes melting and deposition on the electrode during charging and discharging cycles, allowing the electrode to show a similar change in surface morphology and electrochemical properties to that of a conventionally electroless plated electrode.

Abstract: Disclosed is a method for modifying a surface of a hydrogen storage alloy for an Ni/MH secondary battery using flake type metal comprising the steps of ball-milling metal powder to produce flake type metal powder; and ball-milling the flake metal powder together with hydrogen storage alloy powder to obtain mixture powder. The method according to the present invention provides the hydrogen storage alloy capable of increasing discharge capacity of an electrode and lengthening electrode life duration for the Ni/MH secondary battery.

Abstract: Disclosed is a method for surface treatment of lithium manganese oxide for positive electrodes in lithium secondary batteries and, more particularly, a method for surface treatment of lithium manganese oxide in which the surface of the lithium manganese oxide is coated with lithium transition metal oxides. The lithium secondary batteries using the coated lithium manganese oxide as an anode material not only solves the problems with the conventional lithium secondary batteries in regard to the lifetime of the electrodes at high temperature and the fat discharge efficiency but also replace the conventional expensive lithium cobalt oxide to reduce the production cost.

Abstract: Disclosed is a carbonaceous material for anodes of lithium ion rechargeable batteries. The carbonaceous material consists of soot particles which are prepared from liquified propane gas through thermal decomposition. The soot particles are of disordered or amorphous carbon with very small crystallite sizes (La, Lc≦30 Å), containing a large quantity of unorganized carbon. When being used as an active material for an anode of a lithium ion secondary cell, the soot shows far greater reversible capacity than do conventional graphite carbonaceous materials.

Abstract: The present invention relates to a CVD apparatus for highly textured diamond film formation and a method for forming a highly textured diamond film on the surface of a silicone substrate by generating a high density plasma so that each diamond film grain can have the same orientation as the substrate. The present inventors developed an improved chemical vapor deposition apparatus and a method for highly textured diamond film formation, on the ground that the nucleation density having a heteroepitaxy relation with a silicone substrate can be increased by modifying the substrate support and by generating a high density plasma right on the substrate while subjecting the whole substrate to the plasma. In accordance with the present invention, a diamond film which is close to a single crystal and has a heteroepitaxy relation with the crystalline orientation of a substrate can be formed in a simple manner.

Abstract: There are disclosed Mm/Ni type hydrogen storage alloys for Ni/MH secondary cells. The alloys which allow the cells to be of high performance and high capacity can be prepared at lower costs than the production costs of conventional Co-rich hydrogen storage alloys, by reducing the amount of the Co element. The Co element is partially or wholly replaced by by Cr, Cu, Fe, Zn and/or Zi, which are each known to be of stronger affinity for hydrogen than is Co and to have such a strong oxidation tendency in electrolytes as to form a highly dense oxide. The novel alloys have discharge capacities and electrode life span as good as those of the conventional Co-rich hydrogen storage alloys but have advantages over the Co-rich alloys, including performance-to-cost.