Abstract:
PURPOSE: A manufacturing method of silver coated mica using a liquid-phase reduction process and silver coated mica manufactured by the method are provided to enable uniform coating of nano-silver without congealing on mica surface of the metal by adding ammonia water(NH4OH) and silver nitrate(AgNO3) powder. CONSTITUTION: A manufacturing method of silver coated mica using a liquid-phase reduction process comprises the following steps: manufacturing silver nitrate solution by stirring the silver nitrate in distilled water; manufacturing mica stirred solution by stirring mica on fine particles and ascorbic acid in distilled water; mixing the silver nitrate solution with the mica stirred solution; and manufacturing mica corpuscles which silver (Ag) is coated on the surface by Washing, filtering, and drying.
Abstract:
PURPOSE: A method for compositing a lithium manganese composite oxide is provided to increase crystalline of a lithium manganese composite, to make the size of particles equalized and to reduce a manufacturing time. CONSTITUTION: A method for compositing a lithium-manganese composite oxide comprises: a step mixing a lithium compound, manganic compound and M element compound as raw materials using stoichiometry; a step of a hydrothermal treatment the mixture using water or cosolvent as a solvent at 10-250°C for 1-4 days. The lithium-manganese composite oxide is a chemical formula Li (1+x) Mn (2-x-y) My O4. In the chemical formula, 0
Abstract translation:目的:提供一种用于合成锂锰复合氧化物的方法,以增加锂锰复合材料的结晶度,使颗粒尺寸均匀化并缩短制造时间。 构成:合成锂锰复合氧化物的方法包括:使用化学计量法将锂化合物,锰化合物和M元素化合物作为原料混合; 在10-250℃下使用水或助溶剂作为溶剂水热处理1-4天的步骤。 锂锰复合氧化物为化学式Li(1 + x)Mn(2-x-y)My O4。 在化学式中,0 <= x <= 0.1,0.01 <= y <= 0.5,M选自Al,Mg,Ni,Co等过渡金属。
Abstract:
본 발명은, 텅스텐 카바이드를 포함하는 폐초경합금을 탈탄 처리하고 텅스텐 카바이드를 산화시키기 위한 열처리 하면서 밀링기를 이용하여 분쇄하는 단계와, 폐초경합금에 함유된 금속 성분을 자력선별기를 이용하여 자력에 의해 선택적으로 제거하는 단계 및 상기 폐초경합금에 함유된 금속 또는 금속 산화물을 제거하기 위하여 산성 용액에서의 산화텅스텐과의 용해도 차를 이용하여 금속 또는 금속 산화물을 용해하여 제거하는 단계를 포함하는 폐초경합금을 이용한 고순도 산화텅스텐 분말의 제조방법에 관한 것이다. 본 발명에 의하면, 초경합금으로 이루어진 폐공구 또는 폐슬러지로부터 고순도의 산화텅스텐 분말을 얻을 수가 있다. 초경합금, 텅스텐 카바이드(tungsten carbide), 산화텅스텐(tungsten trioxide), 열처리(heat treatment), 자력선별, 산처리(acid treatment)
Abstract:
PURPOSE: A positive electrode active material is provided to enhance the durability of LiCoO2 at high voltage and to improve available energy capacity and lifetime property by coating vanadium oxides on the surface of LiCoO2. CONSTITUTION: A positive electrode active material is able to absorbing and discharging lithium ions and is coated with vanadium oxide on the surface of LiCoO2. A method for preparing the positive electrode active material comprises the steps of: (a) preparing a sol of vanadium oxide; and (b) applying the vanadium oxide sol on the surface of LiCoO2.
Abstract:
PURPOSE: A porous clay complex and a method for using the same are provided to effectively prevent harmful gas and odor. CONSTITUTION: A porous clay complex is a porous clay complex containing titanium dioxide(TiO2). The pore size is 3.0-6.0 nm and pore volume is more than 0.3 mL/g. The porous clay complex is complex of titanium dioxide and porous clay. The clays is smectite swelling layer clay. The smectite swelling layer clay is one of montmorillonite, saponite, hectorite, and beidellite.