Abstract:
본 발명은, 리튬이차전지용 실리콘 나노복합 음극 재료의 제조방법에 관한 것으로, 에탄올 용매를 형성시키는 제1단계와; 상기 에탄올 용매 내에 위치한 두 개의 전극 사이에 실리콘계 와이어를 장착하고, 고전압 펄스방전을 통해 실리콘 나노입자가 분산된 분산용액을 제조하는 제2단계와; 상기 분산용액에 포함된 실리콘 나노입자를 회수하여 볼 밀링 처리시켜 실리콘 입자의 표면에 형성되는 탄소층과 실리콘 카바이드를 파쇄시키는 제3단계;를 포함하여 이루어지는 리튬이차전지용 실리콘 나노복합 음극 재료의 제조방법을 기술적 요지로 한다. 이에 따라, 에탄올계 용매 분위기에서 두 전극 사이에 실리콘계 와이어를 장착하고 양단에 고전압 펄스전원을 인가하여 순간적인 저항 가열에 의해 기화 및 분산시키고, 이를 볼 밀링 함에 의해 실리콘 입자의 표면에 형성되는 탄소층과 실리콘 카바이드를 최소화시켜 실리콘 나노복합 음극 활물질의 제조가 가능하고 이를 적용한 전지의 특성이 향상되는 이점이 있다.
Abstract:
The present invention relates to a method for manufacturing a flexible all-solid-state battery for minimizing contact resistance to an electrode with a solid electrolyte. The method for manufacturing a battery according to one embodiment of the present invention increases a contact area between an electrode and an electrolyte and provides flexibility to minimize contact resistance by manufacturing a curved anode, a curved cathode, and a curved electrolyte surface. More specifically, the battery structure is manufactured to have flexibility.
Abstract:
The present invention relates to a method for manufacturing high-dispersible metal nanoparticle ink for printed electronics which comprises: a first step which manufactures metal nanoparticles dispersed in liquid by electrically exploding metal wires in liquid using pulse power inside a chamber in which liquid is filled; a second step which forms metal nanopowder by collecting and drying the metal nanopowder dispersed in the liquid formed in the first step; and a third step which forms a conductive slurry composition by mixing the metal nanopowder formed in the second step with a binder. According to the above steps, the metal nanoparticles are manufactured using the electric explosion method and the metal nanopowder ink is manufactured without adding a dispersing agent, thereby the metal nanopowder ink with uniform particle size and enhanced dispersibility is manufactured.
Abstract:
The present invention relates to a method for producing an electrode of silicon based negative electrode active material, which is highly favored as a negative electrode active material for a large lithium secondary battery, more particularly, to a lithium secondary battery containing Si-C nanocomposite negative electrode active material, which is silicon based composite, representing excellent cell characteristics by overcoming the initial irreversible capacity. The initial irreversible capacity is overcome by producing nanocomposite of silicon based negative electrode active material in nanoscale using an electricity explosion method; controlling the type and content of silicon based metal ion materials; developing by applying a PAA high-strength binder; and adding lithium metal on the surface of an electrode of negative electrode active material. The method of the present invention is a simple method, and enables the production of silicon Si-C nanocomposite negative electrode active material of quantitative initial Ah efficiency. The lithium secondary battery in which Si-C nanocomposite negative electrode active material is applied provides high output, high energy and long life span characteristics in addition to facilitate mass production and have economical characteristics.
Abstract:
본 발명은 전기자동차용 등 대형 리튬 2차 전지용 음극활물질로서 각광받고 있는 주석계 음극활물질 전극의 제조방법에 관한 것으로, 더욱 상세하게는 Sol-Gel법을 이용하여 균질한 화학성분 조성의 주석계 음극활물질 복합체를 제조하고, 주석계 금속이온재료 복합체의 종류와 함량의 조절, SBR-CMC 수계바인더를 적용한 개발 및 음극활물질 전극 표면에 리튬 금속을 첨가하여 초기 비가역용량의 해소를 통해서 우수한 전지특성을 나타내는 주석계 복합체인 Sn-Co-Fe-C 음극활물질을 포함하는 리튬이차전지를 제공한다. 본 발명에 따른 제조방법은 간단한 방법으로 정량적 초기 Ah 효율의 주석계 복합체 Sn-Co-Fe-C 음극활물질을 제조할 수 있으며 대량 생산이 용이하고 경제적일 뿐만 아니라, 본 발명의 Sn-Co-Fe-C 음극활물질을 적용한 리튬이차전지는 고출력, 고에너지 및 장수명 특성을 제공한다.
Abstract:
본 발명은 수열기법와 에너지 회수 기법을 이용한 폐기물 에너지화 방법 및 그 시스템에관한 것으로서, 다양한 폐기물을 시스템 내부에서 발생하는 열과 수증기를 이용한 수열기법을 채택함으로서 효율적으로 건조하고, 건조, 열분해, 개질 및 열교환하여, 스팀, 전기에너지 및 합성가스의 형태로 에너지화하는 것을 특징으로 하는 수열기법와 에너지 회수 기법을 이용한 폐기물 에너지화 방법 및 그 시스템에 관한 것이다.
Abstract:
The present invention relates to an electrokinetic soil purification system having a power distributing function, more specifically to an electrokinetic soil purification system having a power distributing function for easily building an electrokinetic soil purification system in a broad area only with a single power supplying apparatus. The present invention comprises: electrode parts having multiple anodes and cathodes; a power supplying unit for supplying power to the multiple electrode parts; and a power distributing part. The multiple anodes are inserted at regular intervals in contaminated soil, and the multiple cathodes are facing against the anodes in the contaminated soil. The power distributing part distributes the power supplied from the power supplying unit to each of the electrode parts according to a fixed time interval successively, or distributes the power according to the order decided by contamination state of the soil. According to the present invention, the electrokinetic soil purification system can be easily build in a broad area only with a single power supplying apparatus by supplying power to each of multiple electrode parts with multiple cathodes and anodes in contaminated soil, from a single power supplying apparatus, according to a fixed time interval successively or the order decided by contamination state of the soil, thereby saving costs for building an electrokinetic soil purification system. [Reference numerals] (20) Power supply unit; (30) Power distributing unit