Abstract:
PURPOSE: A method of shielding electron wave amplification of earphone and headphone is provided to protect a user from an electron wave and to shield the electron wave through an earphone by adding or installing a shield material such as metal, special alloy, high molecular and composited materials at the earphone. CONSTITUTION: A bulk-type shield part is adhered on a wire from a connection portion between an earphone and a handheld phone to an earphone. The bulk-type shield part comprises a shield material such as metal, special alloys, high molecular and composited materials. A size of the shield part is determined according to a strength of an electron wave. When the shield part is not exposed, a wire is coated using a shield material. An earphone case is made with a shield material, or the shield material is inserted in an earphone case.
Abstract:
PURPOSE: A lithium electrode, its preparation method and a lithium battery using the electrode are provided, to improve the energy density of a battery and the charge/discharge efficiency and to reduce the danger of explosion. CONSTITUTION: The lithium electrode contains the lithium particle or the lithium alloy particle whose surface is coated with metal or metal oxide. Preferably the metal and the metal oxide are selected from the group consisting of Ni, Cu, Ti, Cr, Mn, Fe, Co, Zn, Mo, W, Ag, Au, Ru, Pt, Ir, Al, Sn, Bi, Sb, their alloys and their oxides; and the lithium alloy is an alloy of the metal selected from the group consisting of Al, Sn, Bi, Si, Sb, B and their alloys, and lithium. The method comprises the steps coating metal or metal oxide on the surface of the lithium particle or the lithium alloy particle; and compressing the particle directly on the current collector, or making the paste with an organic solvent and/or a binder, coating it on the current collector, drying and compressing it.
Abstract:
PURPOSE: A lithium electrode using a porous 3D current collector, its preparation method and a lithium battery using the electrode are provided, to improve the utilization rate, the cycle lifetime and the charge/discharge efficiency of a battery. CONSTITUTION: The lithium electrode contains a porous 3D current collector and lithium or lithium alloy, and the lithium or the lithium alloy id dispersed into the pore of the 3D current collector. Preferably the current collector is made of the material selected from the group consisting of Ni, Cu, Ti, V, Cr, Mn, Fe, Co, Zn, Mo, W, Ag, Au, Ru, Pt, Ir, Al, Sn, Bi, Si, Sb and their alloys. The lithium alloy is an alloy of the metal selected from the group consisting of Al, Sn, Bi, Si, Sb, B and their alloys, and lithium. Optionally the lithium electrode comprises further metal inside of the pore of the current collector, and preferably the metal is selected from the group consisting of Ni, Cu, Ti, V, Cr, Mn, Fe, Co, Zn, Mo, W, Ag, Au, Ru, Pt, Ir, Al, Sn, Bi, Si, Sb and their alloys.
Abstract:
PURPOSE: A metal oxide electrode coated with porous metal, metal oxide or carbon thin film, its preparation method and a lithium secondary battery using the electrode are provided, to improve the capacity of a battery, the efficiency of charging/discharging and the lifetime. CONSTITUTION: The metal oxide electrode is such that it is coated with a thin film comprising porous metal, porous metal oxide or porous carbon by the thickness of several Angstrom to several micrometers. The method comprises the steps of placing a metal oxide electrode roll in a vacuum chamber; evaporating metal, metal oxide or carbon to coat the electrode with porous metal, porous metal oxide or porous carbon with unwinding the electrode from the roll at regular speed and winding it to another roll; and placing the electrode at a specific temperature under vacuum to stabilize the electrode. Preferably the porous metal is selected from the group consisting of Li, Al, Sn, Bi, Si, Sb, Ni, Cu, Ti, V, Cr, Mn, Fe, Co, Zn, Mo, W, Ag, Au, Pt. Ir, Ru or their alloys; and the metal oxide electrode comprises an active material which is prepared by using LiCoO2, LiMn2O4, LiNiO2, V6O13 or V2O5.
Abstract translation:目的:提供涂覆有多孔金属,金属氧化物或碳薄膜的金属氧化物电极,其制备方法和使用该电极的锂二次电池,以提高电池的容量,充电/放电的效率和使用寿命。 构成:金属氧化物电极使其涂覆有包括多孔金属,多孔金属氧化物或多孔碳的薄膜,厚度为几埃至几微米。 该方法包括将金属氧化物电极辊放置在真空室中的步骤; 蒸发金属,金属氧化物或碳,以多孔金属,多孔金属氧化物或多孔碳涂覆电极,以规则的速度将电极从辊中退绕并将其卷绕到另一个辊上; 并将电极置于特定温度的真空下以使电极稳定。 优选多孔金属选自Li,Al,Sn,Bi,Si,Sb,Ni,Cu,Ti,V,Cr,Mn,Fe,Co,Zn,Mo,W,Ag,Au,Pt 。 Ir,Ru或它们的合金; 并且金属氧化物电极包含通过使用LiCoO 2,LiMn 2 O 4,LiNiO 2,V 6 O 13或V 2 O 5制备的活性材料。
Abstract:
PURPOSE: A secondary cell called the lithium battery is provided to improve life and stability at more than 500 times of charging/discharging cycles by comprising amorphous vanadium oxide containing copper component as the anode of the battery. CONSTITUTION: The battery comprises the anode consisting of amorphous vanadium oxide containing 0.1-15 wt.% of copper component having layered structure. The vanadium oxide compound may include at least one selected from a group consisting of iron, nickel, cobalt, tin, antimony, bismuth, magnesium, zinc and chrome in total amount of 0.1-15 wt.% based on the weight of compound. The vanadium oxide is used as a thin film state prepared by using PVD, CVD, sol-gel method, spin-coating method, electrostatic spray deposition manner and so on. The anode is produced by generating copper, tin, iron or antimony by means of sputtering gun and depositing it simultaneously with the vanadium oxide to form the amorphous structure.