Abstract:
PURPOSE: A manufacturing method of a lithium manganese oxide electrode material is provided to manufacture a crystalline lithium manganese oxide electrode material using an amorphous lithium manganese oxide as a starting material. CONSTITUTION: A manufacturing method of a lithium manganese oxide electrode material comprises a step of obtaining a uniform mixture by mixing amorphous lithium manganese oxide; and a step of heat-treating the mixture under oxygen or air atmosphere. The molar ratio of lithium and manganese is 6:5-10:5, in the mixture. The mixing step comprises a dry ball-milling the amorphous lithium manganese oxide and lithium. The heat-treating step is conducted in a vacuum furnace at 400-900 deg. C for 8-20 hours.
Abstract translation:目的:提供一种锂锰氧化物电极材料的制造方法,以制造使用无定形锰酸锂作为原料的结晶锂锰氧化物电极材料。 构成:锂锰氧化物电极材料的制造方法包括通过混合无定形锰酸锂获得均匀混合物的步骤; 以及在氧气或空气气氛下对混合物进行热处理的步骤。 在混合物中锂和锰的摩尔比为6:5-10:5。 混合步骤包括无定形的锂锰氧化物和锂的干球磨。 热处理步骤在400-900度的真空炉中进行。 C 8-20小时。
Abstract:
PURPOSE: A manufacturing method of lithium-manganese oxide of excessive lithium and a secondary battery using thereof are provided to enhancing charge and discharge characters even in volume, variety, and velocity. CONSTITUTION: A manufacturing method of lithium-manganese oxide of excessive lithium is represented by chemical formula 1. The manufacturing method of lithium-manganese oxide of excessive lithium comprises the next steps: processing a reaction of lithium complex with lithium manganese based oxide which is represented by chemical formula 2 in reducing condition in order to synthesize lithium manganese based oxide; and synthesizing lithium manganese based oxide. The chemical formula 1 is same as follow: Li1+xMyMn2-yO4-zQz. The chemical formula 2 is same as follow: Li1+xMyMn2-x-yO4-zQ'z.
Abstract:
본 발명은 충방전이 가능한 리튬 이차전지용 고용량 음극소재 및 그 제조 방법에 관한 것으로서, 용매열 합성법을 이용하여 리튬 이차전지용 음극 활물질로 각광받고 있는 제로 스트레인 인서트 물질(zero-strain insertion material) 인 Li 4 Ti 5 O 12 전극재료를 용이하게 합성함으로써, 기존의 폴리올 또는 고상법을 이용한 합성 방법에 비하여 우수한 결정성 및 고율 특성을 발현하는 Li 4 Ti 5 O 12 나노입자를 얻을 수 있도록 한 급속 충방전이 가능한 리튬 이차전지용 고용량 음극소재 및 그 제조 방법을 제공하고자 한 것이다. 리튬 이차전지, 음극소재, 용매열 합성법, 전극재료, 충방전, 나노입자, 고율 특성
Abstract:
PURPOSE: A process for manufacturing a negative electrode material for a lithium secondary battery is provided to manufacture various phosphate-based negative electrode materials without thermal process of high temperature and to reduce the time required for whole process. CONSTITUTION: A process for manufacturing a negative electrode material for a lithium secondary battery includes the steps of: mixing transition metal compounds dissolved in distilled water with poly acid phosphate-based compounds to prepare a mixed solution; stirring the mixed solution to prepare a precipitate by a co-precipitation method; drying the precipitate to a temperature of 50-80 °C; and heat-treating the dried material at a temperature of 300-500 °C.
Abstract:
PURPOSE: A negative active material composite for a lithium rechargeable battery is provided to prevent the generation of severe irreversible discharge capacity in initial charge-discharging, thereby preventing the degradation of capacity and performance of the lithium rechargeable battery. CONSTITUTION: A negative active material composite for a lithium rechargeable battery is formed by mixing a nitrate transition metal lithium compound into a negative active material with severe irreversible discharge capacity in a proper ratio, wherein the nitrate transition metal lithium compound is formed by adding transition metal atom for imparting electroconductivity to lithium nitride(Li3N). The negative active material composite for a lithium rechargeable battery is configured to reduce an initial irreversible generation capacity.
Abstract:
A gas sensor for partial pressure measurement of hydrogen and oxygen and a manufacturing method thereof are provided to measure the oxygen or hydrogen concentration in the environment unable to be exposed to atmosphere, and to simplify the manufacturing process. A gas sensor(100) for partial pressure measurement of hydrogen and oxygen comprises a solid electrolyte(110) including a closed internal space(130) which stores the air used as the reference electrode, a first electrode(120a) formed on one side of the solid electrolyte exterior, a second electrode(120b) formed in one side of the internal space of the solid electrolyte, and a lead wire(140) which is connected to the first electrode and the second electrode and exposed out of the solid electrolyte.
Abstract:
본발명은급속충방전이가능한나트륨바나듐인산염계전극활물질의제조방법및 그방법으로제조된이차전지용나트륨바나듐인산염계전극활물질에관한것으로, 보다구체적으로는나트륨이온전지의전극활물질이갖는단점을극복하기위해나트륨전극소재와인화니켈과의복합체를구성함으로써급속충방전이가능한나트륨바나듐인산염계전극활물질의제조방법에관한것이다. 본발명의제조방법에의하면나트륨바나듐인산염계전극소재와전기전도도가우수한인화니켈과의복합체를구성함으로써급속충방전이가능한나트륨바나듐인산염계전극활물질을제조할수 있다. 또한, 본발명에의해제조된나트륨바나듐인산염계전극활물질은고출력특성을발현하는나트륨이차전지에적용할수 있는효과가있다.
Abstract:
본발명은이온교환법을이용한단사정계결정구조의나트륨바나듐인산염계전극재료및 그제조방법에관한것으로, 보다구체적으로는합성이어려운단사정계나트륨바나듐인산염계전극재료를이온교환법을이용하여리튬과나트륨을교환함으로써고용량의전극물질을제조할수 있는제조방법및 그방법으로제조된단사정계결정구조의나트륨바나듐인산염계전극재료에관한것이다. 본발명에의하면이온교환법을이용하여리튬과나트륨을교환함으로써합성이어려운단사정계나트륨바나듐인산염계전극재료를제조할수 있다. 또한, 본발명의제조방법에의하면고용량의고전압화된전극재료를간단한공정을통해제조할수 있으며, 그방법으로제조된단사정계나트륨바나듐인산염계전극재료는나트륨이차전지에적용할수 있는효과가있다.